;PAGE 58,132 .XLIST ;From hplabs!wunder@FORD-WDL1 Sun Jul 10 02:16:57 1983 ;Date: 9-Jul-83 01:22:33-PDT ;From: wunder@FORD-WDL1 ;Received: by HP-VENUS via CSNET; 9 Jul 1983 20:09:52-PDT (Sat) ;Received: from FORD-WDL1 by udel-relay.ARPA ; 9 Jul 83 05:02:00 EDT (Sat) ;Received: from udel-relay.ARPA by rand-relay.ARPA ; 9 Jul 83 14:33:33 PDT ;To: twc.hplabs@UDEL-RELAY ;Via: UDel; 9 Jul 83 19:41-PDT ;Return-Path: <> ;Subject: kermit.asm=147607 bytes ;Message-Id: <426654593.7118.hplabs@HP-VENUS> ;1.3A 1-Jul-83 DK32 ;DK1 Set Bell Off, DK2 Make it more like a Zenith (I/D L/C,inverse,24x80), ; ;**************************** HP 150 version **************** ; ; [17] 22-Nov-83 convert to run on HP150 ; ;******************** Version 1.3 ********************************** ; [16] Make adjustments to XT changes so that things that used to work ; still do: pass along characters with the eighth bit on, and in ; OUTCHR, don't overwrite character after setting the appropriate ; parity. ; Daphne, 6/17/83 ; [15] Add tabs stop and clear screen support. Don't give checksum ; warnings. Give keyboard input higher scheduling priority than ; port input. This allows users to ^S, ^O, ^C, etc. the output ; when the port is full of characters. Add a CMU conditional ; to swap control-backspace (delete) with backspace since TOPS-20 ; and VMS are more delete than backspace oriented. ; Glenn Marcy, 6/8/83 ; [14] Add CMU changes that allow Kermit to work on the XT. Plus add ; a statement omitted previously when comparing packet numbers. ; Daphne, 5/26/83 (changes by Dave King, CMU) ;******************** Version 1.2 ********************************** ; [13] When closing received file, handle case where number of bytes is ; divisible by 128. ; Daphne, 5/2/83 ;******************** Version 1.1 ********************************** ; [12] If "SET IBM", set local echo, XON/XOFF, and default (mark) parity. ; Daphne, 4/15/83 ; [11] In RPACK, don't push packet type, but store in temp variable. ; If push and get an error, you pick up packet type as return addr. ; Daphne, 4/15/83 ; [10] Add Set Parity Command. ; Daphne, 4/12/83 ; [9] Allow single-character wildcard in filenames, use "=". ; Daphne, 4/4/83 ; [8] Add Kermit server support. ; Daphne, 3/17/83 ; [7] Allow wildcards in filename. ; Daphne, 3/15/83 ; [6] Make format of "Set Escape" look like the other commands. ; Daphne, 3/14/83 ; [5] Add Set "End-of-Line" (to the char used to terminate packets I send). ; Daphne, 3/7/83 ; [4] Ring bell when done (when succeed and when fail). ; Daphne, 2/10/83 ; [3] Match keyword if "?" is the terminator. ; Daphne, 2/9/83 ; [2] Change "Inpkt" so ignores bare CR from any system. ; Daphne, 2/9/83 ; [1] Add "cmer04" - print error message if run off list of commands allowed. ; Daphne, 2/9/83 ;******************** Version 1.0 ********************************** ; KERMIT - KL10 Error-free Reciprocal Micro Interconnect over TTY-lines ; ; Program Version 1.3, Kermit Protocol Version 2 ; June 13, 1983 ; ; Based on the KERMIT Protocol. ; ; Copyright (C) 1982,1983 Trustees of Columbia University ; ; Daphne Tzoar ; Columbia University Computer Center ; 612 W. 115th St. ; New York City, NY 10025 ; ; Special thanks to Frank da Cruz, Bill Catchings, Steve Jensen, ; Vace Kundakci, and Bernie Eiben for their help and contributions. ; This file is the global data area for all the Kermit modules. IBMPC EQU 1 ; For IBM PC conditional assembly. BELL EQU 07Q TAB EQU 11Q LF EQU 12Q FF EQU 14Q CR EQU 15Q XON EQU 21Q XOFF EQU 23Q ESC EQU 33Q DEL EQU 177Q BS EQU 08H DOS EQU 21H CONIN EQU 01H CONOUT EQU 02H RDRIN EQU 03H PUNOUT EQU 04H LSTOUT EQU 05H DCONIO EQU 06H GTIOB EQU 07H PRSTR EQU 09H CONSTAT EQU 0BH OPENF EQU 0FH CLOSF EQU 10H SFIRST EQU 11H SNEXT EQU 12H DELF EQU 13H READF EQU 14H ; Read from the file. WRITEF EQU 15H MAKEF EQU 16H SETDMA EQU 1AH CFLSZ EQU 23H MAXPKT EQU '~'-' '+2Q ; Maximum size of a packet. MAXTRY EQU 05Q ; Default number of retries on a packet. IMXTRY EQU 20Q ; Default number of retries send initiate. DRPSIZ EQU 5EH ; Default receive packet size. DSPSIZ EQU 20H ; Default send packet size. DSTIME EQU 08H ; Default send time out interval. DRTIME EQU 05H ; Default receive time out interval. DSPAD EQU 00H ; Default send padding. DRPAD EQU 00H ; Default receive padding. DSPADC EQU 00H ; Default send padding char. DRPADC EQU 00H ; Default receive padding char. DSEOL EQU CR ; Default send EOL char. DREOL EQU CR ; Default receive EOL char. DSQUOT EQU '#' ; Default send quote char. DRQUOT EQU '#' ; Default receive quote char. PAREVN EQU 00H ; Even parity. [10 start] PARMRK EQU 01H ; Mark parity. PARNON EQU 02H ; No parity. PARODD EQU 03H ; Odd parity. PARSPC EQU 04H ; Space parity. DEFPAR EQU PARNON ; Default parity (none.) IBMPAR EQU PARMRK ; IBM's parity (mark.) [10 end] SOH EQU 01H ; Start of header char. BUFSIZ EQU 80H ; Size of DMA. DIASW EQU 01H ; Default is diagnostics on. CMKEY EQU 01H ; Parse a keyword. CMIFI EQU 02H ; Parse an input file spec (can be wild). CMOFI EQU 03H ; Parse an output file spec. CMCFM EQU 04H ; Parse a confirm. CMTXT EQU 05H ; Parse arbitrary text up to CR. [8] DEFESC EQU ']'-100Q ; The default escape character. ; ; HP150 specific equates ; [17] e_ioctl equ 44h ; MSODS io control fct e_rel_cursor_sense equ 20 ; aios # e_cursor_position equ 17 e_quick_esc equ 16 e_dc_buflen equ 256; e_7_bit_mode equ 1 e_8_bit_mode equ 2 e_transparent_mode equ 3 e_handshake_mode equ 4 e_keycode_mode equ 43 e_defkey equ 40 e_send_break equ 6 e_break equ 54h ; ; end of HP150 specific equates [17] STACK SEGMENT PARA STACK 'STACK' DW 256 DUP(0) ; Initialize stack to all zeros. STK EQU THIS WORD STACK ENDS DATAS SEGMENT PARA PUBLIC 'DATAS' ; Pure storage. versio db 'CUCCA' db ' HP150 ' ; [17] db ' Kermit-86 - Ver. 1.3A',cr,lf, db 'Info-HP150 Release 11-22-83',cr,lf,'$' kerm db 'Kermit-86>$' spmes db 'Spack: $' rpmes db 'Rpack: $' hibit db 'Warning - Non Ascii char$' tmp db ? foo db '$' crlf db cr,lf,'$' ender db bell,bell,'$' ; [4] tmsg1 db cr,lf,'[Connecting to host, type $' tmsg3 db ' C to return to PC]',cr,lf,cr,lf,'$' ;DK2 tmsg2 db cr,lf,'[Back at micro]',cr,lf,'$' ermes1 db cr,lf,'?Unregonized command$' ermes2 db cr,lf,'?Illegal character$' ermes3 db cr,lf,'?Not confirmed$' ermes4 db 'Unable to rename file$' ermes7 db '?Unable to receive initiate$' ermes8 db '?Unable to receive file name$' ermes9 db '?Unable to receive end of file$' erms10 db '?Unable to receive data$' erms11 db '?Disk full$' erms14 db '?Unable to receive an acknowledgement from the host$' erms15 db '?Unable to find file$' erms17 db 'Record length exceeds size of buffer$' erms18 db cr,lf,'?Unable to tell host that session is finished$' erms19 db cr,lf,'?Unable to tell host to logout$' infms0 db 'Waiting .....$' infms1 db 'Receiving ...$' infms2 db 'Sending .....$' infms3 db 'Completed $' infms4 db 'Failed $' infms5 db 'Renaming file to $' cfrmes db ' Confirm with carriage return $' filhlp db ' Input file spec (possibly wild) $' esctl db 'Control-$' ; [6] spchar db 24H,26H,23H,40H,21H,25H,27H,28H,29H,2DH db 3CH,3EH,7BH,7DH,5FH,5CH,5EH,7EH,7CH,60H eschlp db cr,lf,'Enter literal value (ex: Cntrl ]) $' tophlp db cr,lf,'BYE to host (LOGOUT) and exit to DOS' db cr,lf,'CONNECT to host on selected port' db cr,lf,'EXIT to DOS' db cr,lf,'FINISH running Kermit on the host' db cr,lf,'HELP by giving this message' db cr,lf,'LOGOUT the host' db cr,lf,'RECEIVE file from host' db cr,lf,'SEND file to host' db cr,lf,'SET a parameter' ; db cr,lf,'SHOW the parameters' db cr,lf,'STATUS of Kermit$' sethlp db cr,lf,' ' ; was baud [17] db cr,lf,'BELL' ;DK1 db cr,lf,'DEBUG' db cr,lf,'END-OF-LINE character' db cr,lf,'ESCAPE character change' db cr,lf,'FILE-WARNING' db cr,lf,'IBM' db cr,lf,'LOCAL-ECHO echoing (half-duplex)' db cr,lf,' ' ; was parity [17] stshlp db cr,lf,'PAD-CHAR' db cr,lf,'PADDING$' onhlp db cr,lf,'OFF ON$' yeshlp db cr,lf,'NO YES$' eolhlp db cr,lf,'Decimal digit between 0 and 31$' ; [5] eolerr db cr,lf,'Illegal end-of-line character$' ; [5] inthlp db cr,lf,'? This message' db cr,lf,'C Close the connection' db cr,lf,'S Status of the connection' db cr,lf,'Typing the escape character will send it to the host' db cr,lf,cr,lf,'Command>$' locst db cr,lf,'Local echo on$' remst db cr,lf,'Local echo off$' vtemst db cr,lf,'VT52 emulation on$' novtst db cr,lf,'VT52 emulation off$' ibmst db cr,lf,'IBM on$' noibm db cr,lf,'IBM off$' debon db cr,lf,'Debug mode on$' deboff db cr,lf,'Debug mode off$' flwon db cr,lf,'File Warning on$' flwoff db cr,lf,'File Warning off$' eolst db cr,lf,'End-of-line character is ^$' ; [5] escmes db cr,lf,'Escape character is $' ; [6] outlin db cr,lf,' CUCCA' db ' HP150 ' ; [17] db ' Kermit-86 V1.3A', db ' Field Test Version',cr,lf db cr,lf,'Number of packets (hex)' db cr,lf,'Number of retries (hex)' db cr,lf,'File name $' delstr db 10O,' ',10O,10O,'$' ; Delete string. clrspc db ' ',10O,'$' ; Clear space. escspc db 10O,' ',10O,'$' ; Clear escape. clrlin db cr,'$' ; Clear line (just the cr part). prsp db ' $' ; Print a space. ; Cursor addressing items. scrhi dw 0434H ; Err when 8th bit is on. scrrpr dw 0700H ; Prompt when Kermit ends. screrr dw 0600H ; Place for error msgs. scrfln dw 050CH ; Place for file name. scrnrt dw 0415H ; Place for number of retries. scrnp dw 0315H ; Place for number of packets. scrfr dw 0600H ; Rename file. scrst dw 0334H ; Place for status. scrsp dw 0800H ; Place for send packet. scrrp dw 0A00H ; Place for receive packet. ; COMND tables comtab db 0AH ; Ten entries. db 03H,'BYE$' dw bye db 07H,'CONNECT$' dw telnet db 04H,'EXIT$' dw exit db 06H,'FINISH$' dw finish db 04H,'HELP$' dw help db 06H,'LOGOUT$' dw logout db 07H,'RECEIVE$' dw read db 04H,'SEND$' dw send db 03H,'SET$' dw setcom db 06H,'STATUS$' dw status settab db 07H ;DK1 seven entries. db 04H,'BELL$' ;DK1 dw bellst ;DK1 db 05H,'DEBUG$' dw debst db 0BH,'END-OF-LINE$' ; [5] dw eolset ; [5] db 06H,'ESCAPE$' dw escape db 0CH,'FILE-WARNING$' dw filwar db 03H,'IBM$' dw ibmset db 0AH,'LOCAL-ECHO$' dw lcal ontab db 02H ; Two entries. db 02H,'ON$' dw 01H db 03H,'OFF$' dw 00H yestab db 02H ; Two entries. db 02H,'NO$' dw 00H db 03H,'YES$' dw 01H ; COMND storage cmer00 db cr,lf,'?Program error Invalid COMND call$' cmer01 db cr,lf,'?Ambiguous$' cmer02 db cr,lf,'?Illegal input file spec$' cmer03 db cr,lf,'?Unrecognized instruction$' cmer04 db cr,lf,'?Invalid command or operand$' ; [1] cmin00 db ' Confirm with carriage return$' cmcrlf db cr,lf,'$' cmstat db ? ; What is presently being parsed. cmaflg db ? ; Non-zero when an action char has been found. cmccnt db ? ; Non-zero if a significant char is found. cmsflg db ? ; Non-zero when the last char was a space. cmostp dw ? ; Old stack pointer for reparse. cmrprs dw ? ; Address to go to on reparse. cmprmp dw ? ; Address of prompt. cmptab dw ? ; Address of present keyword table. cmhlp dw ? ; Address of present help. cmdbuf db 80H DUP(?) ; Buffer for command parsing. cmfcb dw ? ; Pointer to FCB. cmfcb2 dw ? ; Pointer to position in FCB. cmcptr dw ? ; Pointer for next char input. cmdptr dw ? ; Pointer into the command buffer. cmsiz dw ? ; Size info of user input. cmkptr dw ? ; Pointer to keyword. cmsptr dw ? ; Place to save a pointer. cmchr db ? ; Save char when checking ambiguity. ; Program storage. oldstk dw ? ; Storage for system stack. oldsts dw ? ; System stack segment. ssp dw 0 ; Save SP in Telnet. bufhex dw 80H filsiz dw 0 ; Double word for filesize (in bytes.) filsiz2 dw 0 ; [17] split 32 bits to please MASM eoflag db ? ; EOF flag; non-zero on EOF. wldflg db 0 ; Assume no "*" in fn. [7] bellfl db 1 ;DK1 Use bell incmod db 0 ;DK2 Insert Character mode debug db 0 ; Debugging mode (default off). hierr db 0 ; Non-ascii char (non-zero if yes). filflg db ? ; Non-zero when nothing in DMA buffer. ecoflg db 0 ; Local echo flag (default off). parflg db defpar ; Parity flag (default none.) [10] escflg db 0 ; Escape flag (start off). vtflg db 1 ; VT52 emulation flag (default on). curatt dw 0007H ; DK2 Video attributes baud dw 0 flwflg db 0 ; File warning flag (default off). ibmflg db 0 ; IBM flag (default off). extflg db 0 ; Exit flag (default off). escchr db defesc ; Storage for the escape character. incnt dw ? ; Number of chars read in from port. chrcnt dw ? ; Number of chars in the file buffer. filcnt dw ? ; Number of chars left to fill. outpnt dw ? ; Position in packet. bufpnt dw ? ; Position in file buffer. fcbptr dw ? ; Position in FCB. datptr dw ? ; Position in packet data buffer. cbfptr dw ? ; Position in character buffer. pktptr dw ? ; Poistion in receive packet. siz dw ? ; Size of data from gtchr. spsiz db dspsiz ; Send packet size. rpsiz db drpsiz ; Receive packet size. stime db dstime ; Send time out. rtime db drtime ; Receive time out. spad db dspad ; Send padding. rpad db drpad ; Receive padding. spadch db dspadc ; Send padding char. rpadch db drpadc ; Receive padding char. seol db dseol ; Send EOL char. reol db dreol ; Receive EOL char. squote db dsquot ; Send quote char. rquote db drquot ; Receive quote char. pktnum dw ? ; Packet number. numpkt dw ? ; Total number of packets sent. numrtr dw ? ; Total number of retries. numtry db ? ; Number of tries on this packet. oldtry db ? ; Number of tries on previous packet. state db ? ; Present state of the automaton. savsci dw ? ; Save for serial port interrupt vector. [14] savscs dw ? ; Ditto. [14] packet db ?,?,?,? ; Packet (data is part of it). data db 5AH DUP(?) ; Data and checksum field of packet. recpkt db 60H DUP(?) ; Receive packet storage (use the following). filbuf db 60H DUP(?) ; Character buffer. fcb db 25H DUP(?) ; Use as our FCB. cpfcb db 25H DUP(?) ; Save FCB in case of "*". [7] buff db 80H DUP(?) ; Use as our DAT. rdbuf db 80H DUP(?) cnt dw 0 temp dw 0 temp1 dw ? ; Temporary storage. temp2 dw ? temp3 dw ? temp4 dw ? argblk dw ? ; For subroutine arguments. argbk1 dw ? argbk2 dw ? argbk3 dw ? ; ; HP150 specific variables [17] ; dc_name db 'COM1',0 dcchar_ptr dw 0; dcchar_cnt dw 0 dc_handle dw 0 dcbuf db e_dc_buflen dup(?) aios_buf db 20 dup(?) tempbuf dw 10 dup(?) binwrn db 0 ; ; end of HP150 specific variables [17] DATAS ENDS ; End data segment ; MAIN SEGMENT PARA PUBLIC 'MAIN' START PROC FAR ASSUME CS:MAIN,DS:DATAS,SS:STACK,ES:NOTHING push ds ; Save system data area. sub ax,ax ; Get a zero. push ax ; Put zero return addr on stack. mov ax,datas ; Initialize DS. mov ds,ax sub ax,ax mov oldstk,sp ; Save old stack pointer. call cmblnk ; Clear the screen. call locate mov dx,offset versio ; Print the version header. call strout mov ah,setdma ; Set disk transfer address. mov dx,offset buff int dos call open_dc ; open COM1 [17] ; This is the main KERMIT loop. It prompts for and gets the users commands. kermit: mov dx,offset kerm call prompt ; Prompt the user. mov dx,offset comtab mov bx,offset tophlp mov ah,cmkey call comnd jmp kermt2 call bx ; Call the routine returned. jmp kermt3 cmp extflg,0 ; Check if the exit flag is set. jne krmend ; If so jump to KRMEND. jmp kermit ; Do it again. kermt2: mov dx,offset ermes1 ; Give an error. call strout jmp kermit kermt3: mov dx,offset ermes3 ; Give an error. call strout jmp kermit krmend: call close_dc ; [17] close data comm and ; disable keycode mode mov sp,oldstk ret START ENDP ; These are some utility routines. ; Abort ABORT PROC NEAR mov state,'A' ; Otherwise abort. ret ABORT ENDP ; NAK NAK PROC NEAR mov ax,pktnum ; Get the packet number we're waiting for. mov argblk,ax mov argbk1,0 mov ah,'N' ; NAK that packet. call spack jmp abort ret ; Go around again. NAK ENDP ; Position cursor for an error message. ERPOS PROC NEAR mov dx,screrr call set_curpos; [17] ret ERPOS ENDP ; Position cursor for error and print message ; ; entry dx -> message ; ERPRT proc near push dx call erpos pop dx call strout ret ERPRT endp ; ; Position cursor for number of retries message. RTPOS PROC NEAR mov dx,scrnrt call set_curpos ; [17] ret RTPOS ENDP ; Print err message that found a non-standard-Ascii char in the file. BITERR PROC NEAR cmp binwrn,1 je biterr90 push bx mov dx,scrhi call set_curpos ; [17] mov dx,offset hibit call strout mov binwrn,1 pop bx biterr90: ret BITERR ENDP ; This routine prints out the escape character in readable format. ESCPRT PROC NEAR ; [6 start] mov al,escchr cmp al,' ' jge escpr2 push ax mov dx,offset esctl call strout pop ax add al,040H ; Make it printable. escpr2: call hpconout ret ESCPRT ENDP ; [6 end] ; FCB must be remembered if found "*" in filename. [7 start] ; Copy from place addressed by BX to place addressed by DI. ; Also use to get the filename to the FCB from the DTA. FCBCPY PROC NEAR fcbcp1: cmp cl,0 je fcbcp2 mov ah,[bx] mov [di],ah dec cl inc bx inc di jmp fcbcp1 fcbcp2: ret FCBCPY ENDP ; This routine sets up the data for init packet (either the ; Send_init or ACK packet). RPAR PROC NEAR mov ah,rpsiz ; Get the receive packet size. add ah,' ' ; Add a space to make it printable. mov [bx],ah ; Put it in the packet. mov ah,rtime ; Get the receive packet time out. add ah,' ' ; Add a space. mov 1[bx],ah ; Put it in the packet. mov ah,rpad ; Get the number of padding chars. add ah,' ' mov 2[bx],ah ; Put it in the packet. mov ah,rpadch ; Get the padding char. add ah,100O ; Uncontrol it. and ah,7FH mov 3[bx],ah ; Put it in the packet. mov ah,reol ; Get the EOL char. add ah,' ' mov 4[bx],ah ; Put it in the packet. mov ah,rquote ; Get the quote char. mov 5[bx],ah ; Put it in the packet. mov ah,06H ; Six pieces of data. ret RPAR ENDP ; This routine reads in all the send_init packet information. SPAR PROC NEAR mov temp4,ax ; Save the number of arguments. mov ah,[bx] ; Get the max packet size. sub ah,' ' ; Subtract a space. mov spsiz,ah ; Save it. mov ax,temp4 cmp al,3 ; Fewer than three pieces? jge spar1 ret ; If so we are done. spar1: mov ah,2[bx] ; Get the number of padding chars. sub ah,' ' mov spad,ah mov ax,temp4 cmp al,4 ; Fewer than four pieces? jge spar2 ret ; If so we are done. spar2: mov ah,3[bx] ; Get the padding char. add ah,100O ; Re-controlify it. and ah,7FH mov spadch,ah mov ax,temp4 cmp al,5 ; Fewer than five pieces? jge spar3 ret ; If so we are done. spar3: mov ah,4[bx] ; Get the EOL char. sub ah,' ' mov seol,ah mov ax,temp4 cmp al,6 ; Fewer than six pieces? jge spar4 ret ; If so we are done. spar4: mov ah,5[bx] ; Get the quote char. mov squote,ah ret SPAR ENDP ; Initialize buffers and clear line. INIT PROC NEAR call cmblnk call locate mov dx,offset outlin ; Put statistics headers on the screen. call strout mov dx,scrst call set_curpos mov dx,offset infms0 call strout mov binwrn,0 call init1 call dc_transparent ret INIT ENDP INIT1 PROC NEAR mov chrcnt,bufsiz ; Number of chars left. mov bufpnt,offset buff ; Addr for beginning. ret INIT1 ENDP ; Clear out the old filename on the screen. CLRFLN PROC NEAR mov dx,scrfln call set_curpos ; [17] mov cx,12 clrfln10: push cx mov al,' ' call hpconout pop cx dec cx jnz clrfln10 ret CLRFLN ENDP ; RECEIVE command READ PROC NEAR mov bx,offset data ; Where to put text (if any). [8 start] mov ah,cmtxt call comnd ; Get text or confirm. jmp kermt3 cmp ah,0 ; Read in any chars? je read1 ; A regular receive. mov al,ah mov ah,0 mov argbk1,ax ; Remember number of chars we read. mov ah,'$' ; Use for printing. mov [bx],ah call init ; Clear line and initialize buffers. call clrfln ; Prepare to print filename. mov dx,offset data ; Print file name. call strout mov argblk,0 ; Start at packet zero. mov ah,'R' ; Receive init packet. call spack ; Send the packet. jmp kermt3 jmp read12 ; [8 end] read1: call init ; Clear the line and initialize the buffers. read12: mov numpkt,0 ; Set the number of packets to zero. mov numrtr,0 ; Set the number of retries to zero. mov pktnum,0 ; Set the packet number to zero. mov numtry,0 ; Set the number of tries to zero. call rtpos ; Position cursor. mov ax,numrtr call nout ; Write the number of retries. mov state,'R' ; Set the state to receive initiate. read2: mov dx,scrnp call set_curpos ; [17] mov ax,numpkt call nout ; Write the number of packets. mov ah,state ; Get the state. cmp ah,'D' ; Are we in the data send state? jne read3 call rdata jmp read2 read3: cmp ah,'F' ; Are we in the file receive state? jne read4 call rfile ; Call receive file. jmp read2 read4: cmp ah,'R' ; Are we in the receive initiate state? jne read5 call rinit jmp read2 read5: cmp ah,'C' ; Are we in the receive complete state? jne read6 mov dx,scrst call set_curpos ; [17] mov dx,offset infms3 ; Plus a little cuteness. call strout cmp bellfl,0 ;DK1 Bell desired? je readnb ;DK1 No call beep readnb: ;DK1 mov dx,scrrpr ; Put prompt here. call set_curpos jmp rskp read6: mov dx,scrst call set_curpos mov dx,offset infms4 ; Plus a little cuteness. call strout call beep ; [4] mov dx,scrrpr call set_curpos jmp rskp READ ENDP ; Receive routines ; Receive init RINIT PROC NEAR mov ah,numtry ; Get the number of tries. cmp ah,imxtry ; Have we reached the maximum number of tries? jl rinit2 mov dx,offset ermes7 call erprt ; Print an error message. jmp abort ; Change the state to abort. rinit2: inc ah ; Increment it. mov numtry,ah ; Save the updated number of tries. call rpack ; Get a packet. jmp nak ; Trashed packet: nak, retry. cmp ah,'S' ; Is it a send initiate packet? jne rinit3 ; If not see if its an error. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov numtry,0 ; Reset the number of tries. mov ax,argblk ; Returned packet number. (Synchronize them.) inc ax ; Increment it. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. mov bx,numpkt inc bx ; Increment the number of packets. mov numpkt,bx mov ax,argbk1 ; Get the number of arguments received. mov bx,offset data ; Get a pointer to the data. call spar ; Get the data into the proper variables. mov bx,offset data ; Get a pointer to our data block. call rpar ; Set up the receive parameters. xchg ah,al mov ah,0 mov argbk1,ax ; Store the returned number of arguments. mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort mov dx,scrst call set_curpos ; [17] mov dx,offset infms1 call strout mov state,'F' ; Set the state to file send ret rinit3: cmp ah,'E' ; Is it an error packet? jne rinit4 call error rinit4: jmp abort RINIT ENDP ; Receive file RFILE PROC NEAR cmp numtry,maxtry ; Have we reached the maximum number of tries? jl rfile1 mov dx,offset ermes8 call erprt ; Print an error message. jmp abort ; Change the state to abort. rfile1: inc numtry ; Save the updated number of tries. call rpack ; Get a packet. jmp nak ; Trashed packet: nak, retry. cmp ah,'S' ; Is it a send initiate packet? jne rfile2 ; No, try next type. cmp oldtry,imxtry ; Have we reached the maximum number of tries? jl rfil12 ; If not proceed. mov dx,offset ermes7 call erprt ; Print an error message. jmp abort ; Change the state to abort. rfil12: inc oldtry ; Save the updated number of tries. mov ax,pktnum ; Get the present packet number. dec ax ; Decrement. cmp ax,argblk ; Is the packet's number one less than now? je rfil13 jmp nak ; No, NAK and try again. rfil13: call rtpos ; Position cursor. inc numrtr ; Increment the number of retries. mov ax,numrtr call nout ; Write the number of retries. mov numtry,0 ; Reset the number of tries. mov bx,offset data ; Get a pointer to our data block. call rpar ; Set up the parameter information. xchg ah,al mov ah,0 mov argbk1,ax ; Save the number of arguments. mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort ret rfile2: cmp ah,'Z' ; Is it an EOF packet? jne rfile3 ; No, try next type. cmp oldtry,maxtry ; Have we reached the maximum number of tries? jl rfil21 ; If not proceed. mov dx,offset ermes9 call erprt ; Print an error message. jmp abort ; Change the state to abort. rfil21: inc oldtry ; Increment it. mov ax,pktnum ; Get the present packet number. dec ax ; Decrement. cmp ax,argblk ; Is the packet's number one less than now? je rfil24 jmp nak ; No, NAK and try again. rfil24: call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov numtry,0 mov argbk1,0 ; No data. (The packet number is in argblk.) mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort ret rfile3: cmp ah,'F' ; Start of file? jne rfile4 mov ax,argblk ; Get the packet number. cmp ax,pktnum ; Is it the right packet number? je rfil32 jmp nak ; No, NAK it and try again. rfil32: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt ; Increment the number of packets. call gofil ; Get a file to write to. jmp abort call init1 ; Initialize all the buffers. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov numtry,0 ; Reset the number of tries. mov argbk1,0 ; No data. (The packet number is in argblk.) mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort mov state,'D' ; Set the state to data receive. ret rfile4: cmp ah,'B' ; End of transmission. jne rfile5 mov ax,pktnum cmp ax,argblk ; Do we match? je rfil41 jmp nak ; No, NAK it and try again. rfil41: mov argbk1,0 ; No data. (Packet number already in argblk). mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort mov state,'C' ; Set the state to complete. ret rfile5: cmp ah,'E' ; Is it an error packet. jne rfile6 call error rfile6: jmp abort RFILE ENDP ; Receive data RDATA PROC NEAR cmp numtry,maxtry ; Get the number of tries. jl rdata1 mov dx,offset erms10 call erprt ; Print an error message. jmp abort ; Change the state to abort. rdata1: inc numtry ; Save the updated number of tries. call rpack ; Get a packet. jmp nak ; Trashed packet: nak, retry. cmp ah,'D' ; Is it a data packet? je rdat11 jmp rdata2 ; No, try next type. rdat11: mov ax,pktnum ; Get the present packet number. cmp ax,argblk ; Is the packet's number correct? jz rdat14 cmp oldtry,maxtry ; Have we reached the maximum number of tries? jl rdat12 ; If not proceed. mov dx,offset erms10 call erprt ; Print an error message. jmp abort ; Change the state to abort. rdat12: inc oldtry ; Save the updated number of tries. ; dec pktnum ; Decrement present packet number. [14] mov ax,pktnum dec ax ; [14] cmp ax,argblk ; Is the packet's number one less than now? je rdat13 jmp nak ; No, NAK it and try again. rdat13: call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov numtry,0 ; Reset number of tries. mov argbk1,0 ; No data. (The packet number is in argblk.) mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort ret rdat14: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt ; Increment the number of packets. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov ax,argbk1 ; Get the length of the data. call ptchr jmp abort ; Unable to write out chars; abort. mov numtry,0 ; Reset the number of tries. mov argbk1,0 ; No data. (Packet number still in argblk.) mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort ret rdata2: cmp ah,'F' ; Start of file? jne rdata3 ; No, try next type. cmp oldtry,maxtry ; Have we reached the maximum number of tries? jl rdat21 ; If not proceed. mov dx,offset ermes8 call erprt ; Print an error message. jmp abort ; Change the state to abort. rdat21: inc oldtry ; Save the updated number of tries. mov ax,pktnum dec ax ; [14 Omitted accidentally - D.T.] cmp ax,argblk ; Is the packet's number one less than now? je rdat22 jmp nak ; No, NAK it and try again. rdat22: call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov numtry,0 ; Reset number of tries. mov argbk1,0 ; No data. (The packet number is in argblk.) mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort ret rdata3: cmp ah,'Z' ; Is it a EOF packet? je rdat3x ; [13] jmp rdata4 ; Try and see if its an error. [13] rdat3x: mov ax,pktnum ; Get the present packet number. [13] cmp ax,argblk ; Is the packet's number correct? je rdat32 jmp nak ; No, NAK it and try again. rdat32: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt rdat33: mov bx,bufpnt ; Get the dma pointer. mov ax,80H sub ax,chrcnt ; Get the number of chars left in the DMA. cmp ax,80H ; [13 start] jne rdat34 call outbuf ; Write out buffer if no room for ^Z. jmp abort mov ax,0 ; [13 end] rdat34: mov cl,'Z'-100O ; Put in a ^Z for EOF. mov [bx],cl inc ax dec chrcnt mov cx,chrcnt mov temp,cx inc bx rdt3: inc ax cmp ax,80H jg rdat35 ; Pad till full. mov cl,0 ; Use nulls. mov [bx],cl inc bx jmp rdt3 rdat35: call outbuf ; Output the last buffer. jmp abort ; Give up if the disk is full. call fixfcb mov ah,closf ; Close up the file. mov dx,offset fcb int dos mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov numtry,0 ; Reset the number of tries. mov argbk1,0 ; No data. (The packet number is in argblk.) mov ah,'Y' ; Acknowledge packet. call spack ; Send the packet. jmp abort mov state,'F' ret rdata4: cmp ah,'E' ; Is it an error packet. jne rdata5 call error rdata5: jmp abort RDATA ENDP FIXFCB PROC NEAR mov bx,offset fcb+18 mov di,offset filsiz mov ax,[bx] mov [di],ax mov bx,offset fcb+16 mov ax,[bx] mov 2[di],ax mov ax,temp ; Get number of chars in last buffer full. sub filsiz2,ax ; Get real file size. sbb filsiz,0 mov bx,offset fcb+18 mov di,offset filsiz mov ax,[di] mov [bx],ax mov bx,offset fcb+16 mov ax,2[di] mov [bx],ax ret FIXFCB ENDP ; Send command SEND PROC NEAR mov ah,cmifi ; Parse an input file spec. mov dx,offset fcb ; Give the address for the FCB. call comnd jmp r ; Give up on bad parse. send1: mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. send11: mov ah,sfirst ; Get the first file. mov dx,offset fcb int dos cmp al,0FFH ; Any found? jne send12 call newln mov dx,offset erms15 call strout ret send12: cmp wldflg,0 ; Any wildcards. [7 start] je send16 ; Nope, so no problem. mov bx,offset fcb ; Remember what FCB looked like. mov di,offset cpfcb mov cl,37 ; Size of FCB. call fcbcpy mov di,offset fcb+1 ; Copy filename from DTA to FCB. mov bx,offset buff+1 mov cl,11 call fcbcpy ; [7 end] send16: call init ; Clear the line and initialize the buffers. mov pktnum,0 ; Set the packet number to zero. mov numtry,0 ; Set the number of tries to zero. mov numpkt,0 ; Set the number of packets to zero. mov numrtr,0 ; Set the number of retries to zero. call rtpos ; Position cursor. mov ax,0 call nout ; Write the number of retries. mov state,'S' ; Set the state to receive initiate. send2: mov dx,scrnp call set_curpos ; [17] mov ax,numpkt call nout ; Write the packet number. cmp state,'D' ; Are we in the data send state? jne send3 call sdata jmp send2 send3: cmp state,'F' ; Are we in the file send state? jne send4 call sfile ; Call send file. jmp send2 send4: cmp state,'Z' ; Are we in the EOF state? jne send5 call seof jmp send2 send5: cmp state,'S' ; Are we in the send initiate state? jne send6 call sinit jmp send2 send6: cmp state,'B' ; Are we in the eot state? jne send7 call seot jmp send2 send7: cmp state,'C' ; Are we in the send complete state? jne send8 mov dx,scrst call set_curpos ; [17] mov dx,offset infms3 ; Plus a little cuteness. call strout cmp bellfl,0 ;DK1 Bell desired? je sendnb ;DK1 call beep ; Ring them bells. [4] sendnb: ;DK1 mov dx,scrrpr call set_curpos ; [17] jmp rskp send8: mov dx,scrst call set_curpos ; [17] mov dx,offset infms4 ; Plus a little cuteness. call strout call beep ; Ring them bells. [4] mov dx,scrrpr call set_curpos ; [17] jmp rskp SEND ENDP ; Send routines ; Send initiate SINIT PROC NEAR cmp numtry,imxtry ; Have we reached the maximum number of tries? jl sinit2 mov dx,offset erms14 call erprt ; Print an error message. jmp abort ; Change the state to abort. sinit2: inc numtry ; Save the updated number of tries. mov bx,offset data ; Get a pointer to our data block. call rpar ; Set up the parameter information. xchg ah,al mov ah,0 mov argbk1,ax ; Save the number of arguments. mov ax,numpkt ; Get the packet number. mov argblk,ax mov ah,'S' ; Send initiate packet. call spack ; Send the packet. jmp abort call rpack ; Get a packet. jmp r ; Trashed packet don't change state, retry. cmp ah,'Y' ; ACK? jne sinit3 ; If not try next. mov ax,pktnum ; Get the packet number. cmp ax,argblk ; Is it the right packet number? je sini22 ret ; If not try again. sini22: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt ; Increment the number of packets. mov ax,argbk1 ; Get the number of pieces of data. mov bx,offset data ; Pointer to the data. call spar ; Read in the data. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. call getfil ; Open the file. jmp abort ; Something is wrong, die. jmp sini32 ; success exit sinit3: cmp ah,'N' ; NAK? jne sinit4 ; If not see if its an error. call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov ax,pktnum ; Get the present packet number. inc ax ; Increment. cmp ax,argblk ; Get the packet's number. je sini32 ret ; If not assume its for this packet, go again. sini32: mov numtry,0 ; Reset number of tries. mov state,'F' ; Set the state to file send. mov dx,scrst call set_curpos ; [17] mov dx,offset infms2 call strout ret sinit4: cmp ah,'E' ; Is it an error packet. jne sinit5 call error sinit5: jmp abort SINIT ENDP ; Send file header SFILE PROC NEAR cmp numtry,maxtry ; Have we reached the maximum number of tries? jl sfile1 mov dx,offset erms14 call erprt ; Print an error message. jmp abort ; Change the state to abort. sfile1: inc numtry ; Increment it. mov datptr,offset data ; Get a pointer to our data block. mov bx,offset fcb+1 ; Pointer to file name in FCB. mov fcbptr,bx ; Save position in FCB. mov cl,0 ; Counter for chars in file name. mov ch,0 ; Counter for number of chars in FCB. sfil11: cmp ch,8H ; Ninth char? jne sfil12 mov ah,'.' mov bx,datptr mov [bx],ah ; Put dot in data packet. inc bx mov datptr,bx ; Save new position in data packet. inc cl sfil12: inc ch cmp ch,0CH ; Twelve? jns sfil13 mov bx,fcbptr mov ah,[bx] ; Get char of filename. inc bx mov fcbptr,bx ; Save position in FCB. cmp ah,'!' ; Is it a good char? jl sfil11 ; If not, get the next. mov bx,datptr mov [bx],ah ; Put char in data buffer. inc cl ; Increment counter. inc bx mov datptr,bx ; Save new position. jmp sfil11 ; Get another char. sfil13: mov ch,0 mov argbk1,cx ; Save number of char in filename. mov bx,datptr mov ah,'$' mov [bx],ah ; Put dollar sign for printing. call clrfln mov dx,offset data ; Print file name. call strout mov ax,pktnum ; Get the packet number. mov argblk,ax mov ah,'F' ; File header packet. call spack ; Send the packet. jmp abort call rpack ; Get a packet. jmp r ; Trashed packet don't change state, retry. cmp ah,'Y' ; ACK? jne sfile2 ; If not try next. mov ax,pktnum ; Get the packet number. cmp ax,argblk je sfil14 ret ; If not hold out for the right one. sfil14: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt ; Increment the number of packets. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov numtry,0 ; Reset the number of tries. sfil15: mov ah,0 ; Get a zero. mov bx,offset fcb add bx,20H mov [bx],ah ; Set the record number to zero. mov eoflag,ah ; Indicate not EOF. mov ah,0FFH mov filflg,ah ; Indicate file buffer empty. call gtchr jmp sfil16 ; Error go see if its EOF. jmp sfil17 ; Got the chars, proceed. sfil16: cmp ah,0FFH ; Is it EOF? je sfl161 jmp abort ; If not give up. sfl161: mov state,'Z' ; Set the state to EOF. ret sfil17: mov siz,ax mov state,'D' ; Set the state to data send. ret sfile2: cmp ah,'N' ; NAK? jne sfile3 ; Try if error packet. call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov ax,pktnum ; Get the present packet number. inc ax ; Increment. cmp ax,argblk ; Is the packet's number one more than now? jz sfil14 ; Just as good as a ACK; go to the ACK code. ret ; If not go try again. sfile3: cmp ah,'E' ; Is it an error packet. jne sfile4 call error sfile4: jmp abort SFILE ENDP ; Send data SDATA PROC NEAR cmp numtry,maxtry ; Have we reached the maximum number of tries? jl sdata1 mov dx,offset erms14 call erprt ; Print an error message. jmp abort ; Change the state to abort. sdata1: inc numtry ; Increment it. mov datptr,offset data ; Get a pointer to our data block. mov cbfptr,offset filbuf ; Pointer to chars to be sent. mov cx,1 ; First char. sdat11: mov bx,cbfptr mov ah,[bx] inc cbfptr mov bx,datptr mov [bx],ah ; Put the char in the data packet. inc datptr ; Save position in data packet. inc cx ; Increment the count. cmp cx,siz ; Have we transfered that many? jle sdat11 ; If not get another. mov ax,siz ; Number of char in char buffer. mov argbk1,ax mov ax,pktnum ; Get the packet number. mov argblk,ax mov ah,'D' ; Data packet. call spack ; Send the packet. jmp abort call rpack ; Get a packet. jmp r ; Trashed packet don't change state, retry. cmp ah,'Y' ; ACK? jne sdata2 ; If not try next. mov ax,pktnum ; Get the packet number. cmp ax,argblk ; Is it the right packet number? jz sdat12 ret ; If not hold out for the right one. sdat12: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt ; Increment the number of packets. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov numtry,0 ; Reset the number of tries. call gtchr jmp sdat13 ; Error go see if its EOF. mov siz,ax ; Save the size of the data gotten. ret sdat13: cmp ah,0FFH ; Is it EOF? je sdt131 jmp abort ; If not give up. sdt131: mov state,'Z' ; Set the state to EOF. ret sdata2: cmp ah,'N' ; NAK? jne sdata3 ; See if is an error packet. call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov ax,pktnum ; Get the present packet number. inc ax ; Increment. cmp ax,argblk ; Is the packet's number one more than now? jz sdat12 ; Just as good as ACK; goto ACK code. ret ; If not go try again. sdata3: cmp ah,'E' ; Is it an error packet. jne sdata4 call error sdata4: jmp abort SDATA ENDP ; Send EOF SEOF PROC NEAR cmp numtry,maxtry ; Have we reached the maximum number of tries? jl seof1 mov dx,offset erms14 call erprt ; Print an error message. jmp abort ; Change the state to abort. seof1: inc numtry ; Increment it. mov ax,pktnum ; Get the packet number. mov argblk,ax mov argbk1,0 ; No data. mov ah,'Z' ; EOF packet. call spack ; Send the packet. jmp abort call rpack ; Get a packet. jmp r ; Trashed packet don't change state, retry. cmp ah,'Y' ; ACK? jne seof2 ; If not try next. mov ax,pktnum ; Get the packet number. cmp ax,argblk ; Is it the right packet number? jz seof12 ret ; If not hold out for the right one. seof12: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt ; Increment the number of packets. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov numtry,0 ; Reset the number of tries. mov ah,closf ; Close the file. mov dx,offset fcb int dos call gtnfil ; Get the next file. jmp seof13 ; No more. mov state,'F' ; Set the state to file send. ret seof13: mov state,'B' ; Set the state to EOT. ret seof2: cmp ah,'N' ; NAK? jne seof3 ; Try and see if its an error packet. call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov ax,pktnum ; Get the present packet number. inc ax ; Increment. cmp ax,argblk ; Is the packet's number one more than now? jz seof12 ; Just as good as a ACK; go to the ACK code. ret ; If not go try again. seof3: cmp ah,'E' ; Is it an error packet? jne seof4 call error seof4: jmp abort SEOF ENDP ; Send EOT SEOT PROC NEAR cmp numtry,maxtry ; Have we reached the maximum number of tries? jl seot1 mov dx,offset erms14 call erprt ; Print an error message. jmp abort ; Change the state to abort. seot1: inc numtry ; Increment it. mov ax,pktnum ; Get the packet number. mov argblk,ax mov argbk1,0 ; No data. mov ah,'B' ; EOF packet. call spack ; Send the packet. jmp abort call rpack ; Get a packet. jmp r ; Trashed packet don't change state, retry. cmp ah,'Y' ; ACK? jne seot2 ; If not try next. mov ax,pktnum ; Get the packet number. cmp ax,argblk ; Is it the right packet number? jz seot12 ret ; If not hold out for the right one. seot12: inc ax ; Increment the packet number. and ax,3FH ; Turn off the two high order bits. mov pktnum,ax ; Save modulo 64 of the number. inc numpkt ; Increment the number of packets. mov ah,numtry ; Get the number of tries. mov oldtry,ah ; Save it. mov numtry,0 ; Reset the number of tries. mov state,'C' ; Set the state to file send. ret seot2: cmp ah,'N' ; NAK? jne seot3 ; Is it error. call rtpos ; Position cursor. inc numrtr ; Increment the number of retries mov ax,numrtr call nout ; Write the number of retries. mov ax,pktnum ; Get the present packet number. inc ax ; Increment. cmp ax,argblk ; Is the packet's number one more than now? jz seot12 ; Just as good as a ACK; go to the ACK code. ret ; If not go try again. seot3: cmp ah,'E' ; Is it an error packet. jne seot4 call error seot4: jmp abort SEOT ENDP ; Here is the bulk of the file I/O. Good luck. ; File routines ; Output the chars in a packet. FILEIO PROC NEAR ptchr: mov temp1,ax ; Save the size. mov bx,offset data ; Beginning of received packet data. mov outpnt,bx ; Remember where we are. mov ch,rquote ; Quote char. ptchr1: dec temp1 ; Decrement # of chars in packet. jnl pt1 jmp rskp ; Return successfully if done. pt1: dec chrcnt ; Decrement number of chars in dta. jns ptchr2 ; Continue if space left. call outbuf ; Output it if full. jmp r ; Error return if disk is full. ptchr2: mov bx,outpnt ; Get position in output buffer. mov ah,[bx] ; Grab a char. inc bx mov outpnt,bx ; and bump pointer. cmp ah,ch ; Is it the quote char? jne ptchr4 ; If not proceed. mov ah,[bx] ; Get the quoted character inc bx mov outpnt,bx ; and bump pointer. dec temp1 ; Decrement # of chars in packet. mov dh,ah ; Save the char. and ah,80H ; Turn off all but the parity bit. mov dl,ah ; Save the parity bit. mov ah,dh ; Get the char. and ah,7FH ; Turn off the parity bit. cmp ah,ch ; Is it the quote char? jz ptchr3 ; If so just go write it out. mov ah,dh ; Get the char. add ah,40H ; Make it a control char again. and ah,7FH ; Modulo 128. ptchr3: or ah,dl ; Or in the parity bit. ptchr4: mov bx,bufpnt ; Destination buffer. mov [bx],ah ; Store it. inc bx mov bufpnt,bx ; Update the pointer jmp ptchr1 ; and loop to next char. ; output the buffer, reset bufpnt and chrcnt outbuf: push bx mov ah,writef ; The write code. mov dx,offset fcb int dos ; Write the record. pop bx cmp al,0 ; Successful. jz outbf1 cmp al,01 jz outbf0 mov dx,offset erms17 ; Record length exceeds dta. call erprt ret outbf0: mov dx,offset erms11 ; Disk full error. call erprt ret outbf1: mov bx,offset buff ; Addr for beginning. mov bufpnt,bx ; Store addr for beginning. mov ax,bufsiz-1 ; Buffer size. mov chrcnt,ax ; Number of chars left. jmp rskp ; Get the chars from the file. gtchr: mov ch,squote ; Keep quote char in c. mov ah,filflg ; Get the file flag. cmp ah,0 ; Is there anything in the DMA? jz gtchr0 ; Yup, proceed. mov cl,0 ; No chars yet. call inbuf jmp gtceof ; No more chars, go return EOF. gtchr0: mov al,spsiz ; Get the maximum packet size. sub al,5 ; Subtract the overhead. mov ah,0 mov temp1,ax ; Number of chars we're to get. mov bx,offset filbuf ; Where to put the data. mov cbfptr,bx ; Remember where we are. mov cl,0 ; No chars. gtchr1: dec temp1 ; Decrement the number of chars left. jns gtchr2 ; Go on if there is more than one left. mov al,cl ; Return the count in A. mov ah,0 jmp rskp gtchr2: mov ax,chrcnt dec ax jl gtchr3 mov chrcnt,ax jmp gtchr4 gtchr3: call inbuf ; Get another buffer full. jmp gtceof cmp chrcnt,0 jne gtchr4 sub cl,2 ; Don't count controllified Z. mov al,cl mov ah,0 jmp rskp gtchr4: mov bx,bufpnt ; Position in DMA. mov ah,[bx] ; Get a char from the file. inc bx mov bufpnt,bx mov dh,ah ; Save the char. and ah,80H ; Turn off all but parity. mov dl,ah ; Save the parity bit. mov ah,dh ; Restore the char. and ah,7FH ; Turn off the parity. cmp ah,' ' ; Compare to a space. jl gtchr5 ; If less then its a control char, handle it. cmp ah,del ; Is the char a delete? jz gtchr5 ; Go quote it. cmp ah,ch ; Is it the quote char? jne gtchr8 ; If not proceed. dec temp1 ; Decrement the char total remaining. mov bx,cbfptr ; Position in character buffer. mov [bx],ah ; Put the char in the buffer. inc bx mov cbfptr,bx inc cl ; Increment the char count. jmp gtchr8 gtchr5: or ah,dl ; Turn on the parity bit. cmp ah,('Z'-100O) ; Is it a ^Z? jne gtchr7 ; If not just proceed. mov ah,eoflag ; EOF flag set? cmp ah,0 jz gtchr6 ; If not just go on. mov bx,bufpnt mov ax,chrcnt mov dh,al ; Get number of chars left in DMA. gtch51: dec dh mov ah,dh jns gtch52 ; Any chars left? mov chrcnt,0 ; If not, say so. mov al,cl ; Return the count in A. mov ah,0 jmp rskp gtch52: mov ah,[bx] ; Get the next char. inc bx ; Move the pointer. cmp ah,('Z'-100O) ; Is it a ^Z? jz gtch51 ; If so see if they rest are. gtchr6: mov ah,('Z'-100O) ; Restore the ^Z. gtchr7: xchg ah,al mov ah,0 mov temp2,ax ; Save the char. dec temp1 ; Decrement char counter. mov bx,cbfptr ; Position in character buffer. mov [bx],ch ; Put the quote in the buffer. inc bx mov cbfptr,bx inc cl ; Increment the char count. mov ax,temp2 ; Get the control char back. xchg al,ah add ah,40H ; Make the non-control. and ah,7fH ; Modulo 200 octal. gtchr8: mov bx,cbfptr ; Position in character buffer. or ah,dl ; Or in the parity bit. mov [bx],ah ; Put the char in the buffer. inc bx mov cbfptr,bx inc cl ; Increment the char count. jmp gtchr1 ; Go around again. gtceof: cmp cl,0 ; Had we gotten any data? je gteof0 ; Nope. mov al,cl mov ah,0 jmp rskp gteof0: mov ah,0FFH ; Get a minus one. ret inbuf: mov ah,eoflag ; Have we reached the end? cmp ah,0 jz inbuf0 ret ; Return if set. inbuf0: push bx push cx mov bx,offset buff ; Set the r/w buffer pointer. mov bufpnt,bx mov ah,readf ; Read a record. mov dx,offset fcb int dos mov cx,filsiz cmp cx,0 ; Check for 128 chars or less left. jne inbuf1 ; Still have data left. mov ax,ds mov es,ax mov si,offset filsiz2 mov di,offset bufhex cmps filsiz2,es:bufhex ja inbuf1 ; More than 128 chars. mov eoflag,0FFH ; Set End-of-file. mov cx,filsiz2 mov chrcnt,cx ; Return proper number of chars. mov filflg,0 ; Buffer not empty. pop cx pop bx jmp rskp inbuf1: sub filsiz2,80H ; Sent another 128 chars. sbb filsiz,0 ; Account for the doubleword. mov al,80H ; Use as counter for number of chars read. pop cx pop bx cmp filflg,0 ; Ever used DMS? jnz inbf21 ; Nope, then don't change count. dec al ; Fix boundary error. inbf21: mov ah,0 ; Zero the flag (buffer not empty). mov chrcnt,ax ; Number of chars read from file. mov filflg,0 ; Buffer not empty. jmp rskp getfil: mov ah,0FFH mov filflg,ah ; Nothing in the DMA. mov ax,0 mov eoflag,ah ; Not the end of file. mov bx,offset fcb+0CH mov [bx],ax ; Zero the current block number. mov bx,offset fcb+0EH mov [bx],ax ; Ditto for Lrecl. mov bx,offset fcb+20H mov [bx],ah ; Zero the current record (of block). inc bx mov [bx],ax ; Same for record (of file). mov bx,offset fcb+23H mov [bx],ax mov ah,openf ; Open the file. mov dx,offset fcb int dos mov bx,offset fcb+18 ; File size in bytes (hi order word). mov di,offset filsiz ; Where to put the info. mov ax,[bx] mov [di],ax mov bx,offset fcb+16 ; Lo order word. mov ax,[bx] mov 2[di],ax sub filsiz2,1 ; Don't count the ^Z. sbb filsiz,0 jmp rskp gtnfil: cmp wldflg,0 ; Was there a "*"? [7 start] je gtn5 ; Nope. mov bx,offset cpfcb ; Get FCB from last check for file. mov di,offset fcb ; Copy to FCB. mov cl,37 ; Size of FCB. call fcbcpy gtn2: mov ah,snext mov dx,offset fcb ; More files? int dos cmp al,0FFH je gtn5 mov bx,offset fcb mov di,offset cpfcb mov cl,37 call fcbcpy ; Copy from FCB. mov di,offset fcb+1 ; Get name of next file to send. mov bx,offset buff+1 mov cl,11 call fcbcpy call getfil ; Initialize jmp r jmp rskp gtn5: mov wldflg,0 ; Reset wild card flag. ret ; [7 end] ; Get the file name (including host to micro translation) gofil: mov bx,offset data ; Get the address of the file name. mov datptr,bx ; Store the address. mov bx,offset fcb+1 ; Address of the FCB. mov fcbptr,bx ; Save it. mov ax,0 mov temp1,ax ; Initialize the char count. mov temp2,ax mov si,offset fcb mov [si],ah ; Set the drive to default to current. mov ch,' ' gofil1: mov [bx],ch ; Blank the FCB. inc bx inc ah cmp ah,0BH ; Twelve? jl gofil1 gofil2: mov bx,datptr ; Get the NAME field. mov ah,[bx] inc bx mov datptr,bx cmp ah,'.' ; Seperator? jne gofil3 mov bx,offset fcb+9H mov fcbptr,bx mov ax,temp1 mov temp2,ax mov temp1,9H jmp gofil6 gofil3: cmp ah,0 ; Trailing null? jz gofil7 ; Then we're done. mov bx,fcbptr mov [bx],ah inc bx mov fcbptr,bx mov ax,temp1 ; Get the char count. inc ax mov temp1,ax cmp ax,8H ; Are we finished with this field? jl gofil2 gofil4: mov temp2,ax mov bx,datptr mov ah,[bx] inc bx mov datptr,bx cmp ah,0 jz gofil7 cmp ah,'.' ; Is this the terminator? jne gofil4 ; Go until we find it. gofil6: mov bx,datptr ; Get the TYPE field. mov ah,[bx] inc bx mov datptr,bx cmp ah,0 ; Trailing null? jz gofil7 ; Then we're done. mov bx,fcbptr mov [bx],ah inc bx mov fcbptr,bx inc temp1 ; Increment char count. cmp temp1,0CH ; Are we finished with this field? jl gofil6 gofil7: mov bx,datptr mov ah,'$' mov [bx],ah ; Put in a dollar sign for printing. call clrfln mov dx,offset data ; Print the file name call strout mov ah,flwflg ; Is file warning on? cmp ah,0 jnz gf7x jmp gofil9 ; If not, just proceed. gf7x: mov ah,openf ; See if the file exists. mov dx,offset fcb int dos cmp al,0FFH ; Does it exist? jnz gf8x jmp gofil9 ; If not create it. gf8x: mov dx,scrfr call set_curpos ; [17] mov dx,offset infms5 ; Inform user we rename file. call strout mov ax,temp2 ; Get the number of chars in the file name. cmp ax,0 jne gofil8 mov ax,temp1 mov temp2,ax gofil8: mov ch,0 mov cl,al mov al,0 ; Says if first field is full. cmp cl,9H ; Is the first field full? jne gofl81 mov al,0FFH ; Set a flag saying so. dec cl gofl81: mov bx,offset fcb ; Get the FCB. add bx,cx ; Add in the character number. mov ah,'&' mov [bx],ah ; Replace the char with an ampersand. push ax push bx mov ah,openf ; See if the file exists. mov dx,offset fcb int dos pop bx cmp al,0FFH ; Does it exist? pop ax jz gofl89 ; If not create it. cmp al,0 ; Get the flag. jz gofl83 dec cl ; Decrement the number of chars. cmp cl,0 jz gofl88 ; If no more, die. jmp gofl81 gofl83: inc cl ; Increment the number of chars. cmp cl,9H ; Are we to the end? jl gofl81 ; If not try again ; else fail. gofl88: mov dx,offset ermes4 ; rename failed call erprt ret gofl89: mov bx,offset fcb+0CH ; Point past the end of the file name. mov dh,[bx] ; Save the present contents. mov ah,'$' mov [bx],ah ; Put in a dollar sign. push dx mov ah,prstr ; Print the file name. mov dx,offset fcb+1 int dos pop dx mov bx,offset fcb+0CH ; Restore over the dollar sign. mov [bx],dh gofil9: mov ah,delf ; Delete the file if it exists. mov dx,offset fcb int dos mov ax,0 mov si,offset fcb+0CH mov [si],ax ; Zero current block. mov si,offset fcb+0EH mov [si],ax ; Same for Lrecl. mov si,offset fcb+20H mov [si],ah ; Zero the current record (within block). inc si mov [si],ax ; Zero record (within file). mov si,offset fcb+23H mov [si],ax mov ah,makef ; Now create it. mov dx,offset fcb int dos cmp al,0FFH ; Is the disk full? je gf9x jmp rskp gf9x: mov dx,offset erms11 call erprt ret FILEIO ENDP ; Packet routines ; Send_Packet ; This routine assembles a packet from the arguments given and sends it ; to the host. ; ; Expects the following: ; AH - Type of packet (D,Y,N,S,R,E,F,Z,T) ; ARGBLK - Packet sequence number ; ARGBK1 - Number of data characters ; Returns: +1 always SPKT PROC NEAR spack: push ax ; Save the packet type. mov bx,offset packet ; Get address of the send packet. mov ah,soh ; Get the start of header char. mov [bx],ah ; Put in the packet. inc bx ; Point to next char. mov ax,argbk1 ; Get the number of data chars. xchg ah,al add ah,' '+3 ; Real packet character count made printable. mov [bx],ah ; Put in the packet. inc bx ; Point to next char. mov cl,ah ; Start the checksum. mov ax,argblk ; Get the packet number. xchg ah,al add ah,' ' ; Add a space so the number is printable. mov [bx],ah ; Put in the packet. inc bx ; Point to next char. add cl,ah ; Add the packet number to the checksum. pop ax ; Get the packet type. mov [bx],ah ; Put in the packet. inc bx ; Point to next char. add cl,ah ; Add the type to the checksum. mov dx,argbk1 ; Get the packet size. spack2: cmp dx,0 ; Are there any chars of data? jz spack3 ; No, finish up. dec dx ; Decrement the char count. mov ah,[bx] ; Get the next char. inc bx ; Point to next char. add cl,ah ; Add the char to the checksum. cmp ah,0 jns spack2 mov hierr,0FFH ; set err flag. jmp spack2 ; Go try again. spack3: cmp hierr,0 je sp3x ; Nothing special to do. call biterr mov hierr,0 ; Reset. sp3x: mov ah,cl ; Get the character total. mov ch,cl ; Save here too (need 'cl' for shift). and ah,0C0H ; Turn off all but the two high order bits. mov cl,6 shr ah,cl ; Shift them into the low order position. mov cl,ch add ah,cl ; Add it to the old bits. and ah,3FH ; Turn off the two high order bits. (MOD 64) add ah,' ' ; Add a space so the number is printable. mov [bx],ah ; Put in the packet. inc bx ; Point to next char. mov ah,seol ; Get the EOL the other host wants. mov [bx],ah ; Put in the packet. inc bx ; Point to next char. mov ah,0 ; Get a null. mov [bx],ah ; Put in the packet. cmp debug,0 ; debug mode. je spack4 inc bx mov ah,'$' mov [bx],ah mov dx,scrsp call set_curpos mov dx,offset spmes call strout mov dx,offset packet call strout ; debug end. spack4: call outpkt ; Call the system dependent routine. jmp r jmp rskp SPKT ENDP ; Write out a packet. OUTPKT PROC NEAR mov dh,spad ; Get the number of padding chars. outpk2: dec dh cmp dh,0 jl outpk3 ; If none left proceed. mov al,spadch ; Get the padding char. call hpdcout ; Output it. jmp outpk2 outpk3: mov bx,offset packet ; Point to the packet. outlup: mov al,[bx] ; Get the next character. cmp al,0 ; Is it a null? jnz outlp2 jmp rskp outlp2: call hpdcout ; Output the character. inc bx ; Increment the char pointer. jmp outlup OUTPKT ENDP ;************************System Dependent**************************** ; Put a char in AH to the port. INCHR PROC NEAR ; ; Get a char from the port and return in AH. ; set carry if user wants to quit call hpdcin ; Get character if ready. [14] jnc inchr2 ; Got it in AL. [14] call hpconstat ; Is a char on the console? jc inchr cmp al,cr ; Is it a carriage return? jne inchr ; If not go look for another char. stc ; quit on carriage return inchr2: ret inchr ENDP ; Receive_Packet ; This routine waits for a packet arrive from the host. It reads ; chars until it finds a SOH. RPACK PROC NEAR call inpkt ; Read up to a carriage return. jmp r ; Return bad. rpack0: call getchr ; Get a character. jmp r ; Hit the carriage return, return bad. cmp ah,soh ; Is the char the start of header char? jne rpack0 ; No, go until it is. rpack1: call getchr ; Get a character. jmp r ; Hit the carriage return, return bad. cmp ah,soh ; Is the char the start of header char? jz rpack1 ; Yes, then go start over. mov cl,ah ; Start the checksum. sub ah,' '+3 ; Get the real data count. mov dh,ah ; Save it for later. mov al,ah ; Swap halves. mov ah,0 mov argbk1,ax ; Save the data count. call getchr ; Get a character. jmp r ; Hit the carriage return, return bad. cmp ah,soh ; Is the char the start of header char? jz rpack1 ; Yes, then go start over. add cl,ah ; Add it to the checksum. sub ah,' ' ; Get the real packet number. mov al,ah ; Swap halves. mov ah,0 mov argblk,ax ; Save the packet number. call getchr ; Get a character. jmp r ; Hit the carriage return, return bad. cmp ah,soh ; Is the char the start of header char? jz rpack1 ; Yes, then go start over. mov temp,ax ; Save the message type. [11] add cl,ah ; Add it to the checksum. mov bx,offset data ; Point to the data buffer. rpack2: dec dh ; Any data characters? js rpack3 ; If not go get the checksum. call getchr ; Get a character. jmp r ; Hit the carriage return, return bad. cmp ah,soh ; Is the char the start of header char? jz rpack1 ; Yes, then go start over. mov [bx],ah ; Put the char into the packet. inc bx ; Point to the next character. add cl,ah ; Add it to the checksum. jmp rpack2 ; Go get another. rpack3: call getchr ; Get a character. jmp r ; Hit the carriage return, return bad. cmp ah,soh ; Is the char the start of header char? jz rpack1 ; Yes, then go start over. sub ah,' ' ; Turn the char back into a number. mov dh,cl ; Get the character total. and dh,0C0H ; Turn off all but the two high order bits. mov ch,cl mov cl,6 shr dh,cl ; Shift them into the low order position. mov cl,ch add dh,cl ; Add it to the old bits. and dh,3FH ; Turn off the two high order bits. (MOD 64) cmp dh,ah ; Are they equal? jz rpack4 ; If so finish up. ret rpack4: mov ah,0 mov [bx],ah ; Put a null at the end of the data. mov ax,temp ; Get the type. [11] jmp rskp RPACK ENDP INPKT PROC NEAR mov bx,offset recpkt ; Point to the beginning of the packet. mov incnt,0 inpkt2: call inchr ; Get a character. jnc inpkt7 ret ; Return failure. inpkt7: mov [bx],al ; Put the char in the packet. inc bx inc incnt cmp al,reol ; Is it the EOL char? jne inpkt2 ; If not loop for another. cmp incnt,1 ; Ignore bare CR. [2 start] jne inpkt6 mov incnt,0 mov bx,offset recpkt jmp inpkt2 ; [2 end] inpkt6: cmp ibmflg,0 ; Is this the (dumb) IBM mainframe? jz inpkt4 ; If not then proceed. inpkt5: cmp state,'S' ; Check if this is the Send-Init packet. jz inpkt4 ; If so don't wait for the XON. inpkt3: call inchr ; Wait for the turn around char. jc inpkt4 cmp al,xon ; Is it the IBM turn around character? jne inpkt3 ; If not, go until it is. inpkt4: mov bx,offset recpkt mov pktptr,bx ; Save the packet pointer. jmp rskp ; If so we are done. INPKT ENDP GETCHR PROC NEAR push bx mov bx,pktptr ; Get the packet pointer. mov ah,[bx] ; Get the char. inc bx mov pktptr,bx pop bx ; Restore BX. cmp ah,reol ; Is it the EOL char? jne getcr2 ; If not return retskp. ret ; If so return failure. getcr2: jmp rskp GETCHR ENDP ; This is where we go if we get an error packet. A call to ERROR ; positions the cursor and prints the message. A call to ERROR1 ; just prints a CRLF and then the message. [8] ERROR PROC NEAR mov state,'A' ; Set the state to abort. call erpos ; Position the cursor. jmp error2 error1: call newln error2: mov bx,argbk1 ; Get the length of the data. add bx,offset data ; Get to the end of the string. mov ah,'$' ; Put a dollar sign at the end. mov [bx],ah mov dx,offset data ; print the error msg call strout ret ERROR ENDP ; LOGOUT - tell remote KERSRV to logout. LOGOUT PROC NEAR ; [8 start] mov ah,cmcfm call comnd ; Get a confirm. jmp r call logo jmp rskp ; Go get another command whether we .... jmp rskp ; .... succeed or fail. LOGOUT ENDP LOGO PROC NEAR mov numtry,0 ; Initialize count. logo1: mov ah,numtry cmp ah,maxtry ; Too many times? js logo3 ; No, try it. logo2: mov dx,offset erms19 call strout ret logo3: inc numtry ; Increment number of tries. mov argblk,0 ; Packet number zero. mov argbk1,1 ; One piece of data. mov bx,offset data mov ah,'L' mov [bx],ah ; Logout the remote host. mov ah,'G' ; Generic command packet. call spack jmp logo2 ; Tell user and die. nop call rpack jmp logo1 ; Go try again. nop cmp ah,'Y' ; ACK? jne logo4 jmp rskp logo4: cmp ah,'E' ; Error packet? jnz logo1 ; Try sending the packet again. call error1 ret LOGO ENDP ; FINISH - tell remote KERSRV to exit. FINISH PROC NEAR mov ah,cmcfm ; Parse a confirm. call comnd jmp r mov numtry,0 ; Initialize count. fin1: mov ah,numtry cmp ah,maxtry ; Too many times? js fin3 ; Nope, try it. fin2: mov dx,offset erms18 call strout jmp rskp ; Go home. fin3: inc numtry ; Increment number of tries. mov argblk,0 ; Packet number zero. mov argbk1,1 ; One piece of data. mov bx,offset data mov ah,'F' mov [bx],ah ; Finish running Kermit. mov ah,'G' ; Generic command packet. call spack jmp fin2 ; Tell user and die. nop call rpack jmp fin1 ; Go try again. nop cmp ah,'Y' ; Got an ACK? jnz fin4 jmp rskp ; Yes, then we're done. fin4: cmp ah,'E' ; Error packet? jnz fin1 ; Try sending it again. call error1 jmp rskp FINISH ENDP ; BYE command - tell remote KERSRV to logout & exits to DOS. BYE PROC NEAR mov ah,cmcfm ; Parse a confirm. call comnd jmp r call logo ; Tell the mainframe to logout. jmp rskp ; Failed - don't exit. mov extflg,1 ; Set exit flag. jmp rskp ; [8 end] BYE ENDP ; This is the 'exit' command. It leaves KERMIT and returns to DOS. EXIT PROC NEAR mov ah,cmcfm call comnd ; Get a confirm. jmp r mov extflg,1 ; Set the exit flag. jmp rskp ; Then return to system. EXIT ENDP ; This is the 'help' command. It gives a list of the commands. HELP PROC NEAR mov ah,cmcfm call comnd ; Get a confirm. jmp r mov dx,offset tophlp ; The address of the help message. call strout jmp rskp HELP ENDP ; This is the CONNECT command. TELNET PROC NEAR mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. call newln mov dx,offset tmsg1 call strout call escprt mov dx,offset tmsg3 call strout call dc_handshake ; [17] let firmware do handshake telnoe: call plup ; Char at port (type to console) ? jc telexit call hpconout ; [17] jmp telnoe telexit: jmp rskp TELNET ENDP PLUP PROC NEAR call conchr ; Check keyboard. [15 begin] jnc plup10 ; Exit from Telnet mov dx,offset tmsg2 call strout stc ret ; plup10: call hpdcin ; Check serial port jc plup ; try again if no data ret PLUP ENDP ;************************System Dependent**************************** CONCHR PROC NEAR call hpconstat ; [17] jc cnc2x cmp al,escchr ; Is it an escape char? jz intchr ; If so go process it. push ax call hpdcout ; Output the char to the port. pop ax mov ah,ecoflg ; Get the echo flag. cmp ah,0 ; Is it turned on? jz cnc2x and al,7FH call hpconout ; [17] echo the char cnc2x: clc ; clear carry for ok return ret CONCHR ENDP CONN PROC NEAR intchr: call hpconin ;[17] cmp al,0 ; Is the char a null? jz intchr ; If so, go until we get a char. mov bh,al ; Save the actual char. and al,137O ; Convert to upper case. cmp al,'C' ; Is it close? jne intch0 stc ; return with carry means quit ret intch0: cmp al,'S' ; Is it status? jnz inc0x call stat01 nop nop nop jmp intch9 inc0x: mov al,bh ; Get the char. cmp al,'?' ; Is it help? jne intch1 ; If not, go to the next check. mov dx,offset inthlp ; If so, get the address of the help message. call strout jmp intchr ; Get another char. intch1: cmp al,escchr ; Is it the escape char? jne intch2 ; If not, go send a beep to the user. call hpdcout jmp intch9 ; Return, we are done here. intch2: mov al,'G'-100O ; Otherwise send a beep. call hpconout intch9: clc ; clear carry means everything ok ret CONN ENDP ; This is the SET command. SETCOM PROC NEAR mov dx,offset settab ; Parse a keyword from the set table. mov bx,offset sethlp mov ah,cmkey call comnd jmp r call bx jmp rskp SETCOM ENDP ; This is the ESCAPE character SET subcommand. [6 start] ESCAPE PROC NEAR call cmgtch ; Get a char. cmp ah,0 jns es1 ; Terminator or no? and ah,7FH ; Turn off minus bit. cmp ah,'?' jne es0 mov dx,offset eschlp call strout call newln mov dx,offset kerm call strout mov bx,cmdptr mov al,'$' mov [bx],al mov dx,offset cmdbuf call strout dec cmcptr ; Ignore dollar sign. dec cmccnt mov cmaflg,0 jmp repars es0: mov dx,offset ermes3 call strout ret es1: mov temp,ax call cmcfrm jmp es0 nop ; Take up 3 bytes. mov ax,temp mov escchr,ah ; Save new value. ret ESCAPE ENDP ; [6 end] ; This is the End-of-line character SET subcommand. [5 start] EOLSET PROC NEAR call cmgtch ; Get the first char into AH. cmp ah,0 jns eol1 cmp ah,0BFH ; Question mark? je eol4 jmp eol3 eol1: sub ah,030H ; Digit --> real number. mov temp,ax ; Save the input. call cmcfrm jmp eol0 ; Got a char. mov ax,0 mov bx,temp jmp eol2 eol0: sub ah,030H ; Digit --> real number. mov temp1,ax call cmcfrm jmp eol3 ; Too many chars. mov bx,temp1 mov ax,temp xchg al,ah mov ah,0 eol2: mov temp,ax ; Save our registers. mov temp1,bx call cmcfrm jmp eol3 mov bx,temp1 mov ax,temp mov temp2,10 ; Get numerical value of char. mul temp2 add al,bh mov ah,0 cmp al,0 jl eol3 cmp al,1FH jg eol3 mov seol,al ; Use new eol char. ret eol3: mov dx,offset eolerr ; Bad end-of-line char call strout jmp prserr eol4: mov ah,prstr mov dx,offset eolhlp call strout call newln mov dx,offset kerm call strout mov bx,cmdptr mov al,'$' mov [bx],al mov dx,offset cmdbuf call strout dec cmcptr ; Don't count the dollar sign. dec cmccnt ; Or the question mark. mov cmaflg,0 ; Check for more input. jmp repars EOLSET ENDP ; [5 end] ; This is the LOCAL echo SET subcommand. LCAL PROC NEAR mov dx,offset ontab mov bx,offset onhlp mov ah,cmkey call comnd jmp r push bx ; Save the parsed value. mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. pop bx mov ecoflg,bl ; Set the local echo flag. ret LCAL ENDP ; This is the VT52 emulation SET subcommand. VT52EM PROC NEAR mov dx,offset ontab mov bx,offset onhlp mov ah,cmkey call comnd jmp r push bx mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. pop bx mov vtflg,bl ; Set the VT52 emulation flag. ret VT52EM ENDP ; This is the SET IBM command. IBMSET PROC NEAR mov dx,offset ontab mov bx,offset onhlp mov ah,cmkey call comnd jmp r push bx mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. pop bx mov ibmflg,bl ; Set the IBM flag. cmp bl,0 ; Turning on or off? [12 start] je ibmst1 ; If off, set parity & local echo to defaults. mov ah,ibmpar ; Set IBM parity. mov al,1 ; Set local echo on. jmp ibmst2 ibmst1: mov ah,defpar ; Reset parity to default. mov al,0 ; Turn off local echo. ibmst2: mov parflg,ah ; Set parity. mov ecoflg,al ; And local echo. [12 end] ret IBMSET ENDP ; This is the SET File-Warning command. FILWAR PROC NEAR mov dx,offset ontab mov bx,offset onhlp mov ah,cmkey call comnd jmp r push bx mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. pop bx mov flwflg,bl ; Set the IBM flag. ret FILWAR ENDP ; Sets debugging mode on and off. DEBST PROC NEAR mov dx,offset ontab mov bx,offset onhlp mov ah,cmkey call comnd jmp r push bx mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. pop bx mov debug,bl ; Set the IBM flag. ret DEBST ENDP ;DK1 Turn bell on or off BELLST PROC NEAR mov dx,offset ontab mov bx,offset onhlp mov ah,cmkey call comnd jmp r push bx mov ah,cmcfm call comnd jmp r pop bx mov bellfl,bl ret BELLST ENDP ; This is the STATUS command. STATUS PROC NEAR call stat0 jmp r jmp rskp STATUS ENDP STAT0 PROC NEAR mov ah,cmcfm call comnd ; Get a confirm. jmp r ; Didn't get a confirm. stat01: mov dx,offset locst ; Assume local echo on. cmp ecoflg,0 ; Is the local echo flag on? jnz stat1 mov dx,offset remst ; If not say so. stat1: call strout ; Print it. mov dx,offset ibmst ; Is IBM flag on? cmp ibmflg,0 jnz stat3 mov dx,offset noibm ; Say it's not. stat3: call strout mov dx,offset deboff ; Assume debug mode is off. cmp debug,0 je stat4 mov dx,offset debon stat4: call strout mov dx,offset flwon ; Assume file-warning on. cmp flwflg,0 jne stat5 mov dx,offset flwoff stat5: call strout mov dx,offset eolst ; Tell the end-of-line char used. [5 start] call strout mov al,seol add al,40H call hpconout ; [5 end] mov dx,offset escmes ; Print escape character. [6] call strout call escprt call newln jmp rskp STAT0 ENDP ; Utility routines ; Jumping to this location is like retskp. It assumes the instruction ; after the call is a jmp addr. RSKP PROC NEAR pop bp add bp,3 push bp ret RSKP ENDP ; Jumping here is the same as a ret. R PROC NEAR ret R ENDP ; This routine prints the number in AX on the screen. ; (Thanks to Jeff Damens) NOUT PROC NEAR push bx ; Save some stuff. push cx push dx push ax mov bh,0 ; Don't print leading zeros. and ah,0F0H ; Only want high order nibble. mov cl,4 shr ah,cl call pdig ; Print the digit. pop ax ; Restore argument. and ah,0FH ; Just the low order nibble. call pdig mov ah,al and ah,0F0H ; Only want high order nibble. mov cl,4 shr ah,cl call pdig ; Print the digit. mov ah,al and ah,0FH ; Just the low order nibble. mov bh,0FFH ; Make sure at least one zero is printed. call pdig pop dx ; Restore some stuff. pop cx pop bx ret NOUT ENDP ; print the digit in register AH PDIG PROC NEAR push ax ; Save it. cmp ah,0 jne pdig2 cmp bh,0 jne pdig2 pop ax ret pdig2: mov bh,0FFH ; Set the print zero flag. cmp ah,10 ; Do we use digits or a-f? jl usedig ; Digit. add ah,'A'-10 ; Compute digit jmp havdig ; and proceed. usedig: add ah,'0' ; Convert to digit havdig: mov al,ah call hpconout pop ax ret PDIG ENDP ; This set of routines provides a user oriented way of parsing ; commands. It is similar to that of the COMND JSYS in TOPS-20. ; This routine prints the prompt in DE and specifies the reparse ; address. PROMPT PROC NEAR pop bx ; Get the return address. push bx ; Put it on the stack again. mov cmrprs,bx ; Save as addr to go to on reparse. mov bx,0 ; Clear out register. add bx,sp ; Get the present stack pointer. mov cmostp,bx ; Save for later restoral. mov cmprmp,dx ; Save pointer to the prompt. mov bx,offset cmdbuf mov cmcptr,bx ; Initialize the command pointer. mov cmdptr,bx mov ah,0 mov cmaflg,ah ; Zero the flags. mov cmccnt,ah mov cmsflg,0FFH call newln mov dx,cmprmp ; Print the prompt call strout ret PROMPT ENDP ; This address is jumped to on reparse. PARSE PROC NEAR repars: mov sp,cmostp ; new sp <-- old sp mov bx,offset cmdbuf mov cmdptr,bx mov ah,0FFH mov cmsflg,ah mov bx,cmrprs ; Get the reparse address. call bx ; Go there. ; This address can be jumped to on a parsing error. prserr: mov sp,cmostp ; Set new sp to old one. mov bx,offset cmdbuf mov cmcptr,bx ; Initialize the command pointer. mov cmdptr,bx mov ah,0 mov cmaflg,ah ; Zero the flags. mov cmccnt,ah mov cmsflg,0FFH call newln mov dx,cmprmp ; Get the prompt. call strout ; Instead return to before the prompt call. mov bx,cmrprs call bx PARSE ENDP ; This routine parses the specified function in AH. Any additional ; information is in DX and BX. ; Returns +1 on success ; +4 on failure (assumes a JMP follows the call) CMND PROC NEAR comnd: mov cmstat,ah ; Save what we are presently parsing. call cminbf ; Get chars until an action or a erase char. mov ah,cmstat ; Restore 'ah' for upcoming checks. cmp ah,cmcfm ; Parse a confirm? jz cmcfrm ; Go get one. cmp ah,cmkey ; Parse a keyword? jnz cm1 jmp cmkeyw ; Try and get one. cm1: cmp ah,cmifi ; Parse an input file spec? jnz cm2 jmp cmifil ; Go get one. cm2: cmp ah,cmofi ; Output file spec? jnz cm3 jmp cmofil ; Go get one. cm3: cmp ah,cmtxt ; Parse arbitrary text. [8] jnz cm4 jmp cmtext cm4: ; Else give error mov dx,offset cmer00 ; "?Unrecognized COMND call" call strout ret ; This routine gets a confirm. cmcfrm: call cmgtch ; Get a char. cmp ah,0 ; Is it negative (a terminator; a space or ; a tab will not be returned here as they ; will be seen as leading white space.) js cmcfr0 ret ; If not, return failure. cmcfr0: and ah,7FH ; Turn off the minus bit. cmp ah,esc ; Is it an escape? jne cmcfr2 call beep mov ah,0 mov cmaflg,ah ; Turn off the action flag. mov bx,cmcptr ; Move the pointer to before thee scape. dec bx mov cmcptr,bx mov cmdptr,bx dec cmccnt ; Decremrnt the char count. jmp cmcfrm ; Try again. cmcfr2: cmp ah,'?' ; Curious? jne cmcfr3 mov dx,offset cmin00 ; Print some help call strout call newln ; Print a crlf mov dx,cmprmp ; Reprint the prompt. call strout mov bx,cmdptr ; Get the pointer into the buffer. mov ah,'$' ; Put a $ there for printing. mov [bx],ah mov bx,cmcptr dec bx ; Decrement & save the buffer pointer. mov cmcptr,bx mov dx,offset cmdbuf call strout mov ah,0 ; Turn off the action flag. mov cmaflg,ah jmp repars ; Reparse everything. cmcfr3: cmp ah,ff ; Is it a form feed? jne cmcfr4 call cmblnk ; If so blank the screen. cmcfr4: jmp rskp ; This routine parses a keyword from the table pointed ; to in DX. The format of the table is as follows: ; ; addr: db n ; Where n is the # of entries in the table. ; db m ; M is the size of the keyword. ; db 'string$' ; Where string is the keyword. ; dw ab ; Where ab is data to be returned. ; ; The keywords must be in alphabetical order. cmkeyw: mov cmhlp,bx ; Save the help. mov cmptab,dx ; Save the beginning of keyword table. mov bx,dx mov ch,[bx] ; Get number of entries in table. inc bx mov dx,cmdptr ; Save command pointer. mov cmsptr,dx ; Save pointer's here. cmky1: cmp ch,0 ; Any commands left to check? jne cmky2 mov dx,offset cmer04 ; Complain. [1] call strout ret ; Fail if not. cmky2: dec ch mov cl,0 ; Keep track of how many chars read in so far. call cmgtch ; Get a char. cmp ah,0 ; Do we have a terminator? jns cmky2x jmp cmky4 ; Negative number means we do. cmky2x: inc bx ; Point to first letter of keyword. inc cl ; Read in another char. mov al,[bx] cmp ah,'a' ; Less than a? jl cmky21 ; If so, don't capitalize. cmp ah,'z'+1 ; More than z? jns cmky21 and ah,137O ; Capitalize the letter. cmky21: cmp ah,al je cmky3 jg cmky2y jmp cmky41 ; Fail if ah preceeds al alphabetically. cmky2y: jmp cmky6 ; Not this keyword - try the next. cmky3: inc bx ; We match here, how 'bout next char? mov al,[bx] cmp al,'$' ; End of keyword? jne cmky3x jmp cmky7 ; Succeed. cmky3x: mov dl,al ; Save al's char here. call cmgtch inc cl ; Read in another char. mov al,dl cmp ah,'a' jl cmky31 cmp ah,'z'+1 jns cmky31 and ah,137O cmky31: cmp ah,9BH ; Escape Recognition (escape w/minus bit on)? je cmky3y cmp ah,0BFH ; A question mark? [3] je cmky3y cmp ah,0A0H ; A space? je cmky3y cmp ah,8DH ; Carriage return? je cmky3y jmp cmky38 cmky3y: mov cmkptr,bx ; Save bx here. mov cmsiz,cx ; Save size info. mov cmchr,ah ; Save char for latter. call cmambg ; See if input is ambiguous or not. jmp cmky32 ; Succeeded (not ambiguous). mov ah,cmchr cmp ah,9BH ; Escape? je cmky3z jmp cmky41 ; Fail. cmky3z: ; Else, ring a bell. call beep mov bx,cmcptr ; Move pointer to before the escape. dec bx mov cmcptr,bx mov cmdptr,bx dec cmccnt ; Decrement char count. mov bx,cmkptr ; Failed - pretend user never typed .... mov cx,cmsiz ; ... in a char. dec cl ; Don't count the escape. dec bx mov cmaflg,0 ; Reset the action flag. jmp cmky3 ; Keep checking. cmky32: mov cx,cmsiz ; Restore info. mov bx,cmkptr ; Our place in the keyword table. cmp cmchr,0A0H ; Space? je cmky35 cmp cmchr,0BFH ; Question mark? [3] je cmky35 cmp cmchr,8DH ; Carriage return? je cmky35 dec cmcptr ; Pointer into buffer of input. mov dx,cmcptr cmky33: mov ah,[bx] ; Get next char in keyword. cmp ah,'$' ; Are we done yet? jz cmky34 mov di,dx mov [di],ah inc bx inc dx inc cmccnt jmp cmky33 cmky34: mov ah,' ' mov di,dx mov [di],ah ; Put a blank in the buffer. inc dx mov cx,cmcptr ; Remember where we were (for printing below). mov cmcptr,dx ; Update our pointers. mov cmdptr,dx mov di,dx mov byte ptr [di],'$' ; Add '$' for printing. mov dx,cx ; Point to beginning of filled in data. call strout inc bx ; Point to address we'll need. mov bx,[bx] mov cmaflg,0 ; Turn off action flag. jmp rskp cmky35: inc bx mov ah,[bx] ; Find end of keyword. cmp ah,'$' jne cmky35 inc bx mov bx,[bx] ; Address of next routine to call. ; mov cmaflg,0 ; Zero the action flag. jmp rskp cmky38: cmp ah,al jne cmky6 ; Go to end of keyword and try next. jmp cmky3 cmky4: and ah,7FH ; Turn off minus bit. cmp ah,'?' ; Need help? je cmky5 cmp ah,' ' ; Just a space - no error. je cmky51 cmp ah,cr je cmky51 cmp ah,tab je cmky51 cmp ah,esc ; Ignore escape? je cmky43 cmky41: mov dx,offset cmer03 call strout jmp prserr ; Parse error - give up. cmky43: call beep mov bx,cmcptr dec bx mov cmcptr,bx mov cmdptr,bx dec cmccnt ; Don't count the escape. mov cmaflg,0 ; Reset action flag. inc ch ; Account for a previous 'dec'. jmp cmky1 ; Start over. cmky5: mov dx,cmhlp ; Print the help text. call strout call newln mov dx,offset kerm call strout mov bx,cmdptr ; Get pointer into buffer. mov al,'$' mov [bx],al ; Add dollar sign for printing. mov dx,offset cmdbuf call strout dec cmcptr ; Don't keep it in the buffer. dec cmccnt ; Don't conut it. mov cmaflg,0 ; Turn off the action flag. jmp repars cmky51: jmp prserr cmky6: inc bx ; Find end of keyword. mov al,[bx] cmp al,'$' jne cmky6 inc bx ; Beginning of next command. inc bx inc bx mov dx,cmsptr ; Get old cmdptr. mov cmdptr,dx ; Restore. mov cmsflg,0FFH jmp cmky1 ; Keep trying. cmky7: call cmgtch ; Get char. cmp ah,0 js cmky71 ; Ok if a terminator. dec bx jmp cmky6 ; No match - try next keyword. cmky71: inc bx ; Get necessary data. mov bx,[bx] cmp ah,9BH ; An escape? jne cmky72 mov dx,offset prsp ; Print a space. call strout mov di,cmcptr dec di mov ah,20H mov [di],ah ; Replace escape char with space. mov cmaflg,0 mov cmsflg,0FFH ; Pretend they typed a space. cmky72: jmp rskp ; See if keyword is unambiguous or not from what the user has typed in. cmambg: cmp ch,0 ; Any keywords left to check? jne cmamb0 ret ; If not then not ambiguous. cmamb0: inc bx ; Go to end of keyword ... mov al,[bx] ; So we can check the next one. cmp al,'$' jne cmamb0 add bx,4 ; Point to start of next keyword. dec cl ; Don't count escape. mov dx,cmsptr ; Buffer with input typed by user. cmamb1: mov ah,[bx] ; Keyword char. mov di,dx mov al,[di] ; Input char. cmp al,'a' ; Do capitalizing. jl cmam11 cmp al,'z'+1 jns cmam11 and al,137O cmam11: cmp ah,al ; Keyword bigger than input (alphabetically)? jle cmamb2 ; No - keep checking. ret ; Yes - not ambiguous. cmamb2: inc bx ; Advance one char. inc dx dec cl jnz cmamb1 jmp rskp ; Fail - it's ambiguous. cmifil: mov bx,dx ; Get the fcb address in bx. mov cmfcb,bx ; Save it. mov ch,0 ; Initialize char count. mov ah,0 mov [bx],ah ; Set the drive to default to current. inc bx mov cmfcb2,bx mov cl,' ' cmifi0: mov [bx],cl ; Blank the FCB. inc bx inc ah cmp ah,0BH ; Twelve? jl cmifi0 cmifi1: call cmgtch ; Get another char. cmp ah,0 ; Is it an action character. jns cmifi2 and ah,7FH ; Turn off the action bit. cmp ah,'?' ; A question mark? jne cmif12 mov al,0 mov cmaflg,al ; Blank the action flag. dec cmcptr ; Decrement the buffer pointer. dec cmccnt ; Decrement count. ; jmp cmifi8 ; Treat like any other character. mov dx,offset filhlp ; Help message. call strout call newln mov dx,offset kerm call strout mov bx,cmdptr mov al,'$' mov [bx],al ; Put in dollar sign for printing. mov dx,offset cmdbuf call strout jmp repars cmif12: cmp ah,esc ; An escape? jne cmif13 mov ah,0 mov cmaflg,ah ; Turn off the action flag. call beep ; Ring the bell. mov bx,cmcptr ; Move the pointer to before the escape. dec bx mov cmcptr,bx mov cmdptr,bx dec cmccnt ; Decrement char count. jmp repars cmif13: mov ah,ch ; It must be a terminator. cmp ah,0 ; Test the length of the file name. jnz cmf3x jmp cmifi9 ; If zero complain. cmf3x: cmp ah,0DH js cmf3y jmp cmifi9 ; If too long complain. cmf3y: jmp rskp ; Otherwise we have succeeded. cmifi2: cmp ah,'.' jne cmifi3 inc ch mov ah,ch cmp ah,1H ; Any chars yet? jnz cmf2x jmp cmifi9 ; No, give error. cmf2x: cmp ah,0AH ; Tenth char? js cmf2y jmp cmifi9 ; Past it, give an error. cmf2y: mov dl,9H mov dh,0 mov bx,cmfcb add bx,dx ; Point to file type field. mov cmfcb2,bx mov ch,9H ; Say we've gotten nine. jmp cmifi1 ; Get the next char. cmifi3: cmp ah,':' jne cmifi4 inc ch cmp ch,2H ; Is it in right place for a drive? je cmif3x jmp cmifi9 ; If not, complain. cmif3x: mov ch,0 ; Reset char count. mov bx,cmfcb2 sub bx,1 mov ah,[bx] ; Get the drive name. sub ah,'@' ; Get the drive number. mov cmfcb2,bx mov bx,cmfcb mov [bx],ah ; Put it in the fcb. jmp cmifi1 cmifi4: cmp ah,'*' jne cmifi7 mov ah,ch cmp ah,8H ; Is this in the name or type field? jz cmifi9 ; If its where the dot should be give up. jns cmifi5 ; Type. mov cl,8H ; Eight chars. jmp cmifi6 cmifi5: mov cl,0CH ; Three chars. cmifi6: mov wldflg,0FFH ; Remember we had a wildcard. mov bx,cmfcb2 ; Get a pointer into the FCB. mov ah,'?' mov [bx],ah ; Put a question mark in. inc bx mov cmfcb2,bx inc ch mov ah,ch cmp ah,cl jl cmifi6 ; Go fill in another. jmp cmifi1 ; Get the next char. cmifi7: cmp ah,03DH ; Equals sign (wildcard)? jne cmif7x mov ah,'?' mov wldflg,0FFH ; Say we have a wildcard. jmp cmifi8 ; Put into FCB. cmif7x: cmp ah,'0' jl cmif8x cmp ah,'z'+1 jns cmif8x cmp ah,'A' ; Don't capitalize non-alphabetics. jl cmifi8 and ah,137O ; Capitalize. cmifi8: mov bx,cmfcb2 ; Get the pointer into the FCB. mov [bx],ah ; Put the char there. inc bx mov cmfcb2,bx inc ch jmp cmifi1 cmif8x: push es mov cx,ds mov es,cx ; Scan uses ES register. mov di,offset spchar ; Special chars. mov cx,20 ; Twenty of them. mov al,ah ; Char is in al. repnz scasb ; Search string for input char. cmp cx,0 ; Was it there? pop es jnz cmifi8 cmifi9: mov dx,offset cmer02 call strout ret cmofil: jmp cmifil ; For now, the same as CMIFI. ; Parse arbitrary text up to a CR. Put chars into data buffer sent to ; the host (pointed to by BX). Return updated pointer in BX and ; input size in AH. cmtext: mov cmptab,bx ; Save pointer to data buffer. [8 start] mov cl,0 ; Init the char count. cmtxt1: call cmgtch ; Get a char. cmp ah,0 ; Terminator? jns cmtxt5 ; Nope, put into the buffer. and ah,07FH cmp ah,esc ; An escape? jne cmtxt2 call beep ; Ring a bell. mov cmaflg,0 ; Reset action flag. dec cmcptr ; Move pointer to before the escape. dec cmdptr dec cmccnt ; Decrement count. jmp cmtxt1 ; Try again. cmtxt2: cmp ah,'?' ; Asking a question? jz cmtxt3 cmp ah,ff ; Formfeed? jne cmtx2x call cmblnk cmtx2x: mov ah,cl ; Return count in AH. mov bx,cmptab ; Return updated pointer. jmp rskp cmtxt3: mov cmaflg,0 ; Reset action flag to zero. cmtxt5: inc cl ; Increment the count. mov bx,cmptab ; Pointer into destination array. mov [bx],ah ; Put char into the buffer. inc bx mov cmptab,bx jmp cmtxt1 ; [8 end] cminbf: push dx push bx mov cx,dx ; Save value here too. mov ah,cmaflg ; Is the action char flag set? cmp ah,0 je cminb1 jmp cminb9 ; If so get no more chars. cminb1: inc cmccnt ; Increment the char count. call hpconin ; [17] HP150 adaptation push ax call hpconout pop ax mov ah,al ; Keep char in 'ah'. mov bx,cmcptr ; Get the pointer into the buffer. mov [bx],ah ; Put it in the buffer. inc bx mov cmcptr,bx cmp ah,25O ; Is it a ^U? jne cminb2 cmnb12: mov dx,offset clrlin call strout mov al,'K' ; [17] clear line call quick_esc mov dx,cmprmp ; Print the prompt. call strout mov bx,offset cmdbuf mov cmcptr,bx ; Reset the point to the start. mov cmccnt,0 ; Zero the count. mov dx,cx ; Preserve original value of dx. jmp repars ; Go start over. cminb2: cmp ah,10O ; Or backspace? jz cminb3 cmp ah,del ; Delete? jne cminb4 mov dx,offset delstr ; Print the delete string call strout cminb3: mov ah,cmccnt ; Decrement the char count by two. dec ah dec ah cmp ah,0 ; Have we gone too far? jns cmnb32 ; If not proceed. call beep ; Ring the bell. jmp cmnb12 ; Go reprint prompt and reparse. cmnb32: mov cmccnt,ah ; Save the new char count. mov dx,offset clrspc ; Erase the char call strout mov bx,cmcptr ; Get the pointer into the buffer. dec bx ; Back up in the buffer. dec bx mov cmcptr,bx jmp repars ; Go reparse everything. cminb4: cmp ah,'?' ; Is it a question mark. jz cminb6 cmp ah,esc ; Is it an escape? jz cminb8 cmp ah,cr ; Is it a carriage return? jz cminb5 cmp ah,lf ; Is it a line feed? jz cminb5 cmp ah,ff ; Is it a formfeed? jne cminb7 call cmblnk call locate cminb5: mov ah,cmccnt ; Have we parsed any chars yet? cmp ah,1 jnz cminb6 jmp prserr ; If not, just start over. cminb6: mov ah,0FFH ; Set the action flag. mov cmaflg,ah jmp cminb9 cminb7: jmp cminb1 ; Get another char. cminb8: ; Don't print the escape char. mov dx,offset escspc call strout jmp cminb6 cminb9: pop bx pop dx ret cmgtch: push cx push bx push dx cmgtc1: mov ah,cmaflg cmp ah,0 ; Is it set. jne cmgt10 call cminbf ; If the action char flag is not set get more. cmgt10: mov bx,cmdptr ; Get a pointer into the buffer. mov ah,[bx] ; Get the next char. inc bx mov cmdptr,bx cmp ah,' ' ; Is it a space? jz cmgtc2 cmp ah,tab ; Or a tab? jne cmgtc3 cmgtc2: mov ah,cmsflg ; Get the space flag. cmp ah,0 ; Was the last char a space? jne cmgtc1 ; Yes, get another char. mov ah,0FFH ; Set the space flag. mov cmsflg,ah mov ah,' ' pop dx pop bx jmp cmgtc5 cmgtc3: mov al,0 mov cmsflg,al ; Zero the space flag. pop dx pop bx cmp ah,esc jz cmgtc5 cmp ah,'?' ; Is the user curious? jz cmgtc4 cmp ah,cr jz cmgtc4 cmp ah,lf jz cmgtc4 cmp ah,ff je cmgtc4 pop cx ret ; Not an action char, just return. cmgtc4: dec cmdptr cmgtc5: or ah,80H ; Make the char negative to indicate pop cx ret ; it is a terminator. CMND ENDP ; This routine blanks the screen. CMBLNK PROC NEAR ; [17] clear screen call locate mov al,'J' call quick_esc ret CMBLNK ENDP ; Cursor control. LOCATE PROC NEAR mov al,'h' ; [17] home up call quick_esc ret LOCATE ENDP ; ; start of HP150 specific code [17] ; ; special screen handling functions implemented through the ioctl ; function. ; ; entry: cx -> number of bytes in buffer ; ds:si -> points to buffer ; AIOS proc near mov ah,e_ioctl mov al,3 xor bx,bx ; stdin = 0 mov dx,si int 21h ret AIOS endp ; ; set_curpos -> set the cursor location relative to the screen. ; ; entry: dx has requested cursor position. dh = row, dl = column ; ; AIOS wants the following buffer: ; ; (0,17) cursor position ; mode one byte 99H for relative placement ; (column) full word column ; (row) full word row ; SET_CURPOS proc near push bx push cx push dx mov si,offset aios_buf mov word ptr [si],e_cursor_position mov word ptr [si+2],99H mov ah,0 mov al,dl mov [si+3],ax mov al,dh mov [si+5],ax mov cx,7 call aios pop dx pop cx pop bx ret SET_CURPOS endp ; ; quick_esc -> execute a one character firmware escape sequence ; via aios ; ; entry: al -> one char escape sequence value ; ; aios wants: ; ; (0,16) execute escape sequence ; (-,op_char) ; QUICK_ESC proc near push bx push cx push dx mov si,offset aios_buf mov word ptr [si],e_quick_esc mov [si+2],al mov cx,3 call aios pop dx pop cx pop bx ret QUICK_ESC endp ; ; hpdcout -> send one char out data comm ; ; entry: al -> char to send ; HPDCOUT proc near push bx push cx push dx mov byte ptr tempbuf,al mov dx,offset tempbuf mov ah,40h mov cx,1 mov bx,dc_handle int 21H pop dx pop cx pop bx ret HPDCOUT endp ; ; hpdcin ->read one char from data comm. ; This routine is optimized by using the IOCTL fast read function. ; ; dcbuf db e_dc_buflen dup(?) ; dcchar_cnt dw 0 ; dcchar_ptr dw 0 ; ; exit: al = char if successful ; carry set if no data ; carry clear if data HPDCIN proc near push bx push cx push dx mov si,dcchar_ptr cmp si,dcchar_cnt jnz hpdcin10 ; ; here if buffer empty, call for more. mov dcchar_ptr,0 mov ah,e_ioctl mov bx,dc_handle mov cx,e_dc_buflen mov dx,offset dcbuf mov al,2 int 21h mov dcchar_cnt,ax cmp ax,0 jnz hpdcin10 ; return carry if no data stc pop dx pop cx pop bx ret ; hpdcin10: mov si,dcchar_ptr mov al,dcbuf[si] inc dcchar_ptr clc pop dx pop cx pop bx ret HPDCIN endp ; ; open_dc -> open device COM1 and prepare for 8 bit, transparent ; access. ; ; initialize the keyboard to keycode mode at the same time. ; OPEN_DC proc near mov dx,offset dc_name mov ah,3cH mov cx,2 ; read/write attribute int 21h ; @@@@@@ check error status ? mov dc_handle,ax ; now set raw mode on mov bx,ax mov ah,e_ioctl mov al,0 int 21h xor dh,dh or dl,20h mov bx,dc_handle mov ah,e_ioctl mov al,1 int 21h ; ; now initialize keyboard ; ; now set raw mode on xor bx,bx ; stdin handle = 0 mov ah,e_ioctl mov al,0 int 21h xor dh,dh or dl,20H xor bx,bx ; stdin handle = 0 mov ah,e_ioctl mov al,1 int 21h ; keycode on mov si,offset tempbuf mov word ptr [si],e_keycode_mode mov word ptr [si+2],1 mov cx,3 call aios ; ; set all keys to normal action ; mov si,offset tempbuf mov word ptr [si],e_defkey mov word ptr [si+2],0 mov word ptr [si+4],0feh mov cx,6 call aios ; ; now set break to intercept ; mov si,offset tempbuf mov word ptr [si],e_defkey mov word ptr [si+2],2 mov word ptr [si+4],e_break mov cx,6 call aios ; ret OPEN_DC endp ; ; close_dc -> shut down data comm and turn keycode mode off ; CLOSE_DC proc near mov ah,3eh mov bx,dc_handle int 21h ; mov si,offset tempbuf mov word ptr [si],e_keycode_mode mov word ptr [si+2],0 mov cx,3 call aios ; ; clear raw mode xor bx,bx ; stdin handle = 0 mov ah,e_ioctl mov al,0 int 21h and dx,000dfh xor bx,bx ; stdin handle = 0 mov ah,e_ioctl mov al,1 int 21h ret CLOSE_DC endp ; ; ; dc_ioctl set some data comm ioctl option ; ; entry: al has function code ; DC_IOCTL proc near mov ah,8h mov tempbuf,ax mov dx,offset tempbuf mov ah,e_ioctl mov al,3 mov bx,dc_handle mov cx,2 int 21h ret DC_IOCTL endp ; ; send_break -> send the break signal out data comm ; SEND_BREAK proc near mov al,e_send_break jmp dc_ioctl SEND_BREAK endp ; ; dc_transparent -> disable firmware handshaking ; DC_TRANSPARENT proc near mov al,e_8_bit_mode call dc_ioctl mov al,e_transparent_mode jmp dc_ioctl DC_TRANSPARENT endp ; ; dc_handshake -> enable firmware handshaking ; DC_HANDSHAKE proc near mov al,e_7_bit_mode call dc_ioctl mov al,e_handshake_mode jmp dc_ioctl DC_HANDSHAKE endp ; ; ; conditionally read a char from the keyboard. ; ; exit: set carry if no data ; clear carry if data. ; all keycodes except break are "normal" and will ; execute immediately. This routine will execute the ; break key. HPCONSTAT proc near push bx push cx push dx mov ah,e_ioctl ; call ioctl status xor bx,bx ; stdin = 0 mov al,6 int 21h cmp al,0 jz hpconstat90 ; return carry if no data ; mov dx,offset tempbuf ; read four bytes of keycode mov cx,4 mov ah,3fh xor bx,bx ; stdin = 0 int 21h mov al,byte ptr tempbuf+2 ; keycode in al mov cl,byte ptr tempbuf ; qualifier in cx test cl,80h jnz hpconstat_special pop dx pop cx pop bx clc ret ; hpconstat_special: cmp al,e_break ; only expected special is break jnz hpconstat90 call send_break hpconstat90: pop dx pop cx pop bx stc ret HPCONSTAT endp ; ; wait for a char from the keyboard. ; exit: al has char, it has been echoed to screen. ; HPCONIN proc near call hpconstat jc hpconin ret HPCONIN endp ; ; write a char to the screen ; ; entry: al has char ; HPCONOUT proc near push ax push dx mov dl,al mov ah,6 int 21h pop dx pop ax ret HPCONOUT endp ; ; end of HP150 specific code ; ; utility routines ; BEEP proc near mov al,bell call hpconout ret BEEP endp ; ; entry -> dx -> points to $ terminated string ; STROUT proc near mov ah,prstr int dos ret STROUT endp ; ; print CR LF ; NEWLN proc near mov dx,offset crlf call strout ret NEWLN endp ; MAIN ENDS ; End of code section. END START