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- ; M7VG-1.ASM -- Vector Graphic overlay file for MDM7xx
- ; 01/08/84
- ;
- ; This overlay will assemble to operate MDM7xx with a Vector 3 or 4
- ; with an external modem driven by the Vector's RS-232 modem port. 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. Much of
- ; the information contained here is not in the main file.
- ;
- ; The source can be modified from the syntax of the ASM assembler that comes
- ; with most CP/M systems to that of the ZSM assembler that comes with
- ; Vector CP/M systems in four steps:
- ;
- ; -globally replace all occurrences of the character $ (dollar sign) with
- ; the character _ (underscore)
- ;
- ; -globally replace all occurrences of the string DB<HT>' (DB followed
- ; by an ASCII HT (09h,^I) followed by a single quote) with DT<HT>'
- ; (ZSM requires the psuedo-op DT for strings of >1 character)
- ;
- ; -globally replace all occurrences of IF<HT>NOT VECTOR4 with
- ; IFF<HT>VECTOR4 and all IF<HT>VECTOR4 with IFT<HT>VECTOR4
- ;
- ; -delete the last line in the file (ZSM doesn't need an END pseudo-op)
- ;
- ; On a Vector 4, the program will come up running at 1200 baud, which can
- ; be changed using the "SET" command or by changing the equates before
- ; assembling. On a Vector 3, the program will come up at whatever baud
- ; rate has been set by the hardware switches.
- ;
- ; It is currently set up for a Vector 4. To assemble for a Vector 3, change
- ; the VECTOR4 equate to NO and the clock and baud bytes appropriately.
- ; The Vector 4 appears to scroll the screen just slowly enough to cause
- ; a couple of missed characters at the start of each line when operating at
- ; 1200 baud. This can be fixed by using whatever command the system you
- ; are communicating with accepts to tell it to insert a short delay between
- ; lines as it transmits.
- ;
- ; Edit this file for your preferences then follow the "TO USE:" example
- ; shown below.
- ;
- ; 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
- ; 4300 0100
- ; -IM7VG-1.HEX (note the "I" command)
- ; -R ("R" loads in the .HEX file)
- ; NEXT PC
- ; 4300 0000
- ; -G0 (return to CP/M)
- ; A>SAVE 66 MDM7xx.COM (now have a modified .COM file)
- ;
- ; = = = = = = = = = = = = = = = = = =
- ; 01/08/84 - Modified for Vector 3 and 4 - Ross Alford
- ; ...duke!ecsvax!alford
- ; 11/10/83 - Modified for Vector 4 computers - Loren Cook
- ; 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 04H ;Vector Graphic modem data port
- MODCTL1: EQU PORT+1 ;Modem status port
- MODCTL2: EQU PORT+1 ;Modem control port
- MODDATP: EQU PORT ;Modem data port
- ;
- VECTOR4 EQU YES ;assemble for Vector 4
- ;
- ORG 100H
- ;
- DS 3 ;(for "JMP START" instruction)
- ;
-
- PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H
- SMARTMODEM: DB NO ;yes=HAYES Smartmodem 104H
- TONEPULSE: DB 'T' ;T=tone, P=Pulse (Smartmodem-only) 105H
- CLOCK: DB 51 ;clock speed in MHz x10, 25.5 MHz max. 106H
- ;20=2 MHh, 37=3.68 MHz, 40=4 MHz, etc.
- MSPEED: DB 5 ;0=110 1=300 2=450 3=600 4=710 5=1200 107H
- ;6=2400 7=4800 8=9600 9=19200 default
- BYTDLY: DB 0 ;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 0 ;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
- ;
- ; baud change routine available for Vector 4
- ;
- IF VECTOR4
- SETUPTST: DB YES ;yes=user-added Setup routine 10BH
- ENDIF
- ;
- ; no baud change for Vector 3
- ;
- IF NOT VECTOR4
- SETUPTST: DB NO ;no=no user-added Setup routine 10BH
- ENDIF
- ;
- 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 YES ;yes=change any file same name to .BAK 10EH
- CRCDFLT: DB NO ;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 YES ;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 119H
- XOFFTST: DB YES ;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 'B'-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$MODCTL1: IN MODCTL1 ;in modem control port 12AH
- RET
- DS 7
- OUT$MODDATP: OUT MODDATP ;out modem data port 134H
- RET
- DS 7
- IN$MODDATP: IN MODDATP ;in modem data port 13EH
- RET
- DS 31
- ;
- LOGONPTR: DW LOGON ;for user message. 160H
- DS 6 ; 162H
- JMP$GOODBYE: JMP GOODBYE ; 168H
- JMP$INITMOD: JMP INITMOD ;go to user written routine 16BH
- RET ;(by-passes PMMI routine) 16EH
- NOP
- NOP
- RET ;(by-passes PMMI routine) 171H
- NOP
- NOP
- RET ;(by-passes PMMI routine) 174H
- NOP
- NOP
- JMP$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 010H,0,0,0,0 ;Vector clr to end of scrn 198H
- RET ; 19DH
- ;
- CLRSCRN: CALL JMP$ILPRT ; 19EH
- DB 04H,0,0,0,0 ;Vector clear screen 1A1H
- RET ; 1A6H
- ;
- ;
- SYSVER: CALL JMP$ILPRT ; 1A7H
- ;
- IF VECTOR4
- DB 'Version for Vector 4 '
- ENDIF
- ;
- IF NOT VECTOR4
- DB 'Version for Vector 3 '
- ENDIF
- ;
- 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 Vector 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$TIMER
- MVI A,07H ;Normal send/receive with DTR
- OUT MODCTL1 ;Send to status port
- RET
- ;
- ;------------------------------------------------------------------------
- ; initialization routines
- ;
- ; just initialize the 8251 USART on a Vector 3
- ;
- IF NOT VECTOR4
- INITMOD: MVI A,40H ;internal 8251 reset
- OUT MODCTL1
- MVI A,4EH ;8data, 1 stop, no parity, 16X baud
- OUT MODCTL1
- MVI A,07H ;normal command start
- OUT MODCTL1
- RET
- ENDIF ;vector 3 initialization
- ;
- ; Set baud rate and initialize 8251 if Vector 4
- ;
- IF VECTOR4
- ;
- ; Vector 4 specific equates for initialization.
- ;
-
- CTCCMD: EQU 13H ;8253 Timer control/status port
- CTC1: EQU 11H ;Timer (1) port 011H
- LSBAUD: EQU 68H ;Default 1200 baud(LSB)
- MSBAUD: EQU 00H ;Default 1200 baud(MSB)
- ;
- ;
- ; Vector 4 initialization -- sets CTC timer for baudrate in/out.
- ;.....
- INITMOD: MVI A,5 ;Default transfer time to 1200 baud
- STA MSPEED
- ;
- INITMOD1: MVI A,76H ;Select Timer (1)
- OUT CTCCMD
- ;
- LSBD: MVI A,LSBAUD ;Send LSB of baud rate
- OUT CTC1
- ;
- MSBD: MVI A,MSBAUD ;Send MSB of baud rate
- OUT CTC1
- ;
- ; set up USART with data format
- ;
- MVI A,40H ;internal 8251 reset
- OUT MODCTL1
- MVI A,4EH ;8data, 1 stop, no parity, 16X baud
- OUT MODCTL1
- MVI A,07H ;normal command start
- OUT MODCTL1
- RET
- ENDIF ;conditional Vector 4 initialization
- ;
- ;------------------------------------------------------------------------
- ; setup routines
- ;
- ; if Vector 3, no user setup routine
- ;
- IF NOT VECTOR4
- SETUPR: RET
- ENDIF
- ;
- ; if Vector 4, setup routine for baud rate
- ;
- IF VECTOR4
- SETUPR: LXI D,BAUDBUF ;Point to new input buffer
- CALL JMP$ILPRT
- DB 'Input Baud Rate (300, 600, 1200, 2400, '
- DB '4800, 9600): '
- DB 0
- CALL JMP$INBUF
- LXI D,BAUDBUF+2
- CALL JMP$INLNCOMP ;Compare BAUDBUF+2 with chars below
- DB '300'
- DB 0
- JNC OK300 ;Go if got match
- CALL JMP$INLNCOMP
- DB '600'
- DB 0
- JNC OK600
- CALL JMP$INLNCOMP
- DB '1200'
- DB 0
- JNC OK1200
- CALL JMP$INLNCOMP
- DB '2400'
- DB 0
- JNC OK2400
- CALL JMP$INLNCOMP
- DB '4800'
- DB 0
- JNC OK4800
- CALL JMP$INLNCOMP
- DB '9600'
- DB 0
- JNC OK9600
- CALL JMP$ILPRT ;All matches failed, tell operator
- DB '++ Incorrect entry ++'
- DB 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
- ;
- OK600: MVI A,3
- LHLD BD600
- JMP LOADBD
- ;
- OK1200: MVI A,5
- LHLD BD1200
- JMP LOADBD
- ;
- OK2400: MVI A,6
- LHLD BD2400
- JMP LOADBD
- ;
- OK4800: MVI A,7
- LHLD BD4800
- JMP LOADBD
- ;
- OK9600: MVI A,8
- LHLD BD9600
- JMP LOADBD
- ;
- LOADBD: STA INITMOD+1 ;Change time-to-send to match baudrate
- MOV A,L ;Get least significant baudrate byte
- STA LSBD+1 ;Store in INITMOD
- MOV A,H ;Get most significant baudrate byte
- STA MSBD+1 ;Store in INITMOD
- JMP INITMOD ;Reinitialize to new baudrate, then done
- ;
- ;
- ; TABLE OF BAUDRATE PARAMETERS
- ;
- BD300: DW 01A1H ; 300 Baud
- BD600: DW 00D0H ; 600 Baud
- BD1200: DW 0068H ; 1200 Baud
- BD2400: DW 0034H ; 2400 Baud
- BD4800: DW 001AH ; 4800 Baud
- BD9600: DW 000DH ; 9600 Baud
- ;
- BAUDBUF: DB 10,0
- DS 10
- ENDIF ;Vector 4 SET routine for baud rate
- ;
- ; (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