; M7SD-1.ASM -- SD200 SYSTEM COMPUTER overlay file for MDM7xx. 3/30/84 ; ; The M7SD.ASM file will patch the MDM7XX communications programs ; for the SD200 computer systems using the SBC-200 computer board. ; Baud rate can be changed with the SET command. This program has ; been patched to be used with the Hayes Smartmodem. ; ; You will want to look this file over carefully. There are a number of ; options that you can use to configure the program to suit your taste. ; This file adapts the SD200 computer to the modem program. ; Much of the information contained here is not in the main file. ; ; Edit this file for your preferences then follow the "TO USE:" example ; shown below. ; ; Use the MDM7xx "SET" command to change the baudrate when desired. It ; starts out at 300 baud when the program is first called up. ; ; TO USE: First edit this file filling in answers for your own ; equipment. Then assemble with ASM.COM or equivalent ; assembler. Then use DDT to overlay the the results ; of this program to the original .COM file: ; ; A>DDT MDM7xx.COM ; DDT VERS 2.2 ; NEXT PC ; 4A00 0100 (MDM728 and later are 73 sectors) ; -IM7SD-1.HEX (note the "I" command) ; -R ("R" loads in the .HEX file) ; NEXT PC ; 4A00 0000 ; -G0 (return to CP/M) ; A>SAVE 73 MDM7SD.COM (now have a modified .COM file) ; ; = = = = = = = = = = = = = = = = = = ; 03/30/84 - Renamed to M7SD-1.ASM - Carlos Ulman ; 11/11/83 - Renamed to M7DP-1.ASM, no changes - Irv Hoff ; 07/27/83 - Renamed to work with MDM712 - Irv Hoff ; 07/01/83 - Revised to work with MDM711 - Irv Hoff ; 06/22/83 - Revised to work with MDM710 - Irv Hoff ; 05/25/83 - Updated to work with MDM709 - Irv Hoff ; 05/15/83 - Revised to work with MDM708 - Irv Hoff ; 04/11/83 - Updated to work with MDM707 - Irv Hoff ; 04/04/83 - Updated to work with MDM706 - Irv Hoff ; 02/27/83 - Updated to work with MDM705 - Irv Hoff ; 02/17/83 - Modified MDM703CF for Datapoint ; 1560 computers using an exter- ; nal modem - Irv Hoff ; ; = = = = = = = = = = = = = = = = = ; BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; YES: EQU 0FFH NO: EQU 0 ; ; PORT: EQU 07CH ;SD200 Modem Data Port MODCTL1: EQU 07DH ;Modem status port MODCTL2: EQU 07DH ;Modem control port MODDATP: EQU 07CH ;Modem data port ; ; ORG 100H ; DS 3 ;(for "JMP START" instruction) ; PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H SMARTMODEM: DB YES ;yes=HAYES Smartmodem 104H TONEPULSE: DB 'T' ;T=tone, P=Pulse (Smartmodem-only) 105H CLOCK: DB 40 ;clock speed in MHz x10, 25.5 MHz max. 106H ;20=2 MHh, 37=3.68 MHz, 40=4 MHz, etc. MSPEED: DB 1 ;0=110 1=300 2=450 3=600 4=710 5=1200 107H ;6=2400 7=4800 8=9600 9=19200 default BYTDLY: DB 5 ;0=0 delay 1=10ms 5=50 ms - 9=90 ms 108H ;default time to send character in ter- ;minal mode file transfer for slow BBS. CRDLY: DB 5 ;0=0 delay 1=100 ms 5=500 ms - 9=900 ms 109H ;default time for extra wait after CRLF ;in terminal mode file transfer NOOFCOL: DB 5 ;number of DIR columns shown 10AH SETUPTST: DB YES ;yes=user-added Setup routine 10BH SCRNTEST: DB YES ;Cursor control routine 10CH ACKNAK: DB YES ;yes=resend a record after a non-ACK 10DH ;no=resend a record only after NAK BAKKUPBYTE: DB NO ;yes=change any file same name to .BAK 10EH CRCDFLT: DB YES ;yes=default to CRC checking 10FH TOGGLECRC: DB YES ;yes=allow toggling of CRC to Checksum 110H CONVBKSP: DB NO ;yes=convert backspace to rub 111H TOGGLEBK: DB NO ;yes=allow toggling of bksp to rub 112H ADDLF: DB NO ;no=no LF after CR to send file in 113H ;terminal mode (added by remote echo) TOGGLELF: DB YES ;yes=allow toggling of LF after CR 114H TRANLOGON: DB YES ;yes=allow transmission of logon 115H ;write logon sequence at location LOGON SAVCCP: DB YES ;yes=do not overwrite CCP 116H LOCONEXTCHR: DB NO ;yes=local command if EXTCHR precedes 117H ;no=external command if EXTCHR precedes TOGGLELOC: DB YES ;yes=allow toggling of LOCONEXTCHR 118H LSTTST: DB YES ;yes=printer available on printer port 19H XOFFTST: DB NO ;yes=chcks for XOFF from remote while 11AH ;sending a file in terminal mode XONWAIT: DB NO ;yes=wait for XON after CR while 11BH ;sending a file in terminal mode TOGXOFF: DB YES ;yes=allow toggling of XOFF checking 11CH IGNORCTL: DB YES ;yes=CTL-chars above ^M not displayed 11DH EXTRA1: DB 0 ;for future expansion 11EH EXTRA2: DB 0 ;for future expansion 11FH BRKCHR DB '@'-40H ;Send a 300 ms. break tone 120H NOCONNCT: DB 'N'-40H ;^N = Disconnect from phone line 121H LOGCHR: DB 'L'-40H ;^L = Send logon 122H LSTCHR: DB 'P'-40H ;^P = Toggle printer 123H UNSAVE: DB 'R'-40H ;^R = Close input text buffer 124H TRANCHR: DB 'T'-40H ;^T = Transmit file to remote 125H SAVECHR: DB 'Y'-40H ;^Y = Open input text buffer 126H EXTCHR: DB '^'-40H ;^^ = Send next character 127H ; ; DS 2 ; 128H ; IN$MODCTL1: IN MODCTL1 ! RET ;in modem control port 12AH DS 7 OUT$MODDATP: OUT MODDATP ! RET ;out modem data port 134H DS 7 IN$MODDATP: IN MODDATP ! RET ;in modem data port 13EH DS 31 ; LOGONPTR: DW LOGON ;for user message. 160H DS 6 ; 162H JMP$GOODBYE: JMP GOODBYE ; 168H JMP$INITMOD: JMP INITMOD ;go to user written routine 16BH RET ! NOP ! NOP ;(by-passes PMMI routine) 16EH RET ! NOP ! NOP ;(by-passes PMMI routine) 171H RET ! NOP ! NOP ;(by-passes PMMI routine) 174H JMP$SETUPR: JMP SETUPR ; 177H JMP$SPCLMENU: JMP SPCLMENU ; 17AH JMP$SYSVER: JMP SYSVER ; 17DH JMP$BREAK: JMP SENDBRK ; 180H ; ; ; Do not change the following six lines. ; JMP$ILPRT: DS 3 ; 183H JMP$INBUF DS 3 ; 186H JMP$INLNCOMP: DS 3 ; 189H JMP$INMODEM DS 3 ; 18CH JMP$NXTSCRN: DS 3 ; 18FH JMP$TIMER: DS 3 ; 192H ; ; Clear sequences -- CLREOS is clear to end of screen, CLRSCRN is clear ; entire screen. Last entry must be 0. Any other 0's act as NOP's. ; CLREOS: CALL JMP$ILPRT ; 195H DB ESC,79H,0,0,0 ; 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB ESC,3AH,0,0,0 ; 1A1H RET ; 1A6H ; ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for SD200 modem port 07CH' DB CR,LF,0 RET ;..... ; ; ;----------------------------------------------------------------------- ; ; NOTE: You can change the SYSVER message to be longer or shorter. The ; end of your last routine should terminate by 0400H (601 bytes ; available after start of SYSVER) if using the Hayes Smartmodem ; or by address 0C00H (2659 bytes) otherwise. ; ;----------------------------------------------------------------------- ; ; You can put in a message at this location which can be called up with ; CTL-O if TRANLOGON has been set YES. You can put in several lines if ; desired. End with a 0. ; ; LOGON: DB 'This is a SD200 computer',CR,LF,0 ; ;======================================================================= ; ; This routine allows a 300 ms. break tone to be sent to reset some ; time-share computers. ; SENDBRK: MVI A,1FH JMP GOODBYE1 ;..... ; ; ; This routine sends a 300 ms. break tone and sets DTR low for the same ; length of time to disconnect some modems such as the Bell 212A, etc. ; GOODBYE: MVI A,15H ;SEND BREAK, TURN OFF DTR ; GOODBYE1: OUT MODCTL1 ;SEND TO STATUS PORT MVI B,3 ;DELAY ABOUT 300 MS. CALL JMP$TIMER MVI A,07H ;NORMAL SEND/RECEIVE WITH DTR OUT MODCTL1 ;SEND TO STATUS PORT RET ; ; ; SD200 initialization -- sets CTC timers 20H and 1AH for ; baudrate in/out. ; INITMOD: MVI A,1 STA MSPEED MVI A,40H ;DATA FOR INTERNAL RESET MODE OUT 7DH ;USART INTL RST: PUT IN MODE FORMAT INITMOD1: MVI A,4FH ;FMAT: 16X, 8 BIT, NO PARITY, 1 STP BIT ; 64X:4FH ; 5XH - ODD PARITY ; 7XH - EVEN PARITY OUT 7DH ;OUTPUT TO MODE MVI A,37H ;COM: )RTS, )DTR, RST ERR FLGS, EN R&T OUT 7DH ;OUTPUT COMMAND MVI A,45H ;CTC COUNTER MODE: LOAD TIME CONSTANT OUT 78H ;OUTPUT TO CTC CHANNEL 0 INITMOD2: MVI A,68H ;1200 BAUD DATA CONSTANT ;300 BAUD: SET FORMAT TO 64X OUT 78H ;OUTPUT TIME CONSTANT TO CHANNEL 0 IN 7CH ;CLEAR RX READY STATUS BIT RET ;..... ; ; SETUPR: LXI D,BAUDBUF ;POINT TO NEW INPUT BUFFER CALL JMP$ILPRT DB 'Input Baud Rate (300, 1200): ',0 CALL JMP$INBUF LXI D,BAUDBUF+2 CALL JMP$INLNCOMP ;COMPARE BAUDBUF+2 WITH CHARACTERS BELOW DB '300',0 JNC OK300 ;GO IF GOT MATCH ;CALL JMP$INLNCOMP ;DB '450',0 ;JNC OK450 CALL JMP$INLNCOMP DB '1200',0 JNC OK1200 ;CALL JMP$INLNCOMP ;DB '9600',0 ;JNC OK9600 CALL JMP$ILPRT ;ALL MATCHES FAILED, TELL OPERATOR DB '++ Incorrect entry ++',CR,LF,BELL,0 JMP SETUPR ;TRY AGAIN ; OK300: MVI A,1 ;MSPEED 300 BAUD VALUE LHLD BD300 ;GET 300 BAUD PARAMETERS IN 'HL' JMP LOADBD ;GO LOAD THEM ; OK450: MVI A,2 LHLD BD450 JMP LOADBD ; OK1200: MVI A,5 LHLD BD1200 JMP LOADBD ; OK9600: MVI A,8 LHLD BD9600 ; LOADBD: STA INITMOD+1 ;CHANGE TIME-TO-SEND TO MATCH BAUDRATE MOV A,L ;GET BAUDRATE BYTE STA INITMOD1+1 ;STORE IN INITMOD MOV A,H STA INITMOD2+1 JMP INITMOD ;REINITIALIZE TO NEW BAUDRATE, THEN DONE ; ; ; TABLE OF BAUDRATE PARAMETERS ; BD300: DW 00684FH ;9600/300 CONVERTED TO HEX VALUE BD450: DW 0015H ;9600/450 CONVERTED TO HEX VALUE BD1200: DW 00684EH ;9600/1200 CONVERTED TO HEX VALUE BD9600: DW 0001H ;9600/9600 CONVERTED TO HEX VALUE ; BAUDBUF: DB 10,0 DS 10 ; ; (END OF INITMOD AND SETUP ROUTINES) ;======================================================================= ; ; ; These routines can be used for your equipment, be sure to end with RET ; If using the Hayes Smartmodem this is unavailable without a special ; change. ; SPCLMENU: RET ; ;======================================================================= ; ; ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem) ; 0BC0H (without Smartmodem) ; END ; ============= ; ; ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem) ; 0BC0H (without S