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Assembly Source File | 1994-07-13 | 11.5 KB | 363 lines

; M7VT-2.ASM -- DEC VT180 overlay file for MDM7xx. 11/24/83 ; ; ;This overlay file supports the DEC Micros VT180, Rainbow and ;DECmate II with CP/M. ; ;We use the COMM-Port of the Micro's. Baud-rates are "parallel" ;to the console Baud-rates - no need for a "special" baud-rate ;routine. Since the COMM-port is I/O-wise Reader/Punch, we use ;the BDOS calls. ; ;To test for COMM-status , we use I/O byte redirection in ;conjunction with direct BIOS-CONSTAT call. ; ;This technique although a little bit slower than direct I/O ;using Interrupt on INPUT is general enough to be system ;independent. Set one of the following switches to TRUE ( ;RAINBOW / ROBIN (aka VT180) /DECmate ) ; ; - B. Eiben DEC Large System Marketing Marlboro Mass ; ;*********************************************************************** ; ; 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 places particular emphasis on using ; an external modem that does not match one of the other special ; overlays. You would use the normal CP/M "Configure" program to ; set the modem to whatever baud rate you would normally use (such ; as 300 or 1200, etc.) Then perhaps just make a second .COM file ; if you need both 300 and 1200 and do not wish to write your own ; initialization or "set baud" routine. ; ; You could look at other overlay files to see how the GOODBYE ; and/or SETUPR areas are handled. You could then adapt one of ; those, if appropriate for your equipment in this overlay. Some ; examples: ; ; "DP" Datapoint 1560 overlay using 8251 I/O and CTC timers for ; setting baud rates ; "H8" Heath H89 overlay for 8250 I/O and programmable baud rates ; "HZ" Zenith 120 overlay for 2661B initialization and baud rates ; "XE" Xerox 820II overlay for Z80-SIO intialization, etc. ; ; 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 ; -IM7VT-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) ; ; = = = = = = = = = = = = = = = = = = ; ; 11/24/83 - Changed to add Rainbow and Decmate - B.G.E. ; 11/11/83 - Renamed to M7VT-1.ASM, no changes - Irv Hoff ; 08/09/83 - Revised to work with a VT180 - Michael Gwilliam ; 04/04/83 - First version of this file - Irv Hoff ; ; = = = = = = = = = = = = = = = = = ; BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; TRUE: EQU 0FFH FALSE: EQU 0 YES: EQU 0FFH NO: EQU 0 ; ; ; Change the following information to match your equipment ; ROBIN EQU TRUE ;aka DEC VT180 RAINBOW EQU FALSE ; DECMATE EQU FALSE ;.. with CP/M option ; BDOS: EQU 0005 ;address of BDOS entry PUNCH: EQU 4 ;punch function READER: EQU 3 ;reader function MODDCDB: EQU 4 ;carrier detect bit MODDCDA: EQU 0 ;value when active MODRCVB: EQU 0FFH ;bit to test for recedive MODRCVR: EQU 0FFH ;value when ready MODSNDB: EQU 0FFH ;bit to test for send MODSNDR: EQU 0FFH ;value when ready ; ; ORG 100H ; ; ; Change the clock speed to suit your system ; DS 3 ;(for "JMP START" instruction) ; PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H SMARTMODEM: DB NO ;yes=HAYES Smartmodem, no=non-PMMI 104H TOUCHPULSE: DB 'T' ;T=touch, 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 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 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 NO ;yes=user-added Setup routine 10BH SCRNTEST: DB YES ;Cursor control routine 10CH ACKNAK: DB YES ;yes=resend a record after any non-ACK 10DH ;no=resend a record after a valid-NAK BAKUPBYTE: 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 YES ;yes=convert backspace to rub 111H TOGGLEBK: DB YES ;yes=allow toggling of bksp to rub 112H BADDLF: 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 YES ;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=checks 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 NO ;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 300 ms. break tone 120H NOCONNCT: DB 'N'-40H ;^N = Disconnect from the 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 ;changed to be closer to KERMIT (B.G.E) ; ; DS 2 ; 128H ; IN$MODCTL1: JMP INCTL ;in modem control port 12AH DS 7 OUT$MODDATP: JMP OUTDATA ;out modem data port 134H DS 7 IN$MODDATP: JMP INDATA ;in modem data port 13EH DS 7 ANI$MODRCVB: ANI MODRCVB ! RET ;bit to test for receive ready 148H CPI$MODRCVR: CPI MODRCVR ! RET ;value of rcv. bit when ready 14BH ANI$MODSNDB: MVI A,MODSNDB ! RET ;bit to test for send ready 14EH CPI$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H DS 6 ;Together these do nothing 156H ; OUT$MODCTL1: RET ! NOP ! NOP ;out modem control port #2 15AH OUT$MODCTL2: RET ! NOP ! NOP ;out modem control port #1 15DH ; LOGONPTR: DW LOGON ;for user message. 160H DS 6 ; 162H JMP$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$TIMER DS 3 ; 192H ; ; ; Routine to clear to end of screen. If using CLREOS and CLRSCRN, set ; SCRNTEST to YES at 010AH (above). ; CLREOS: CALL JMP$ILPRT ; 195H DB ESC,'[','0','J',0; 198H RET ; 19DH ; CLRSCRN: JMP DECVT100 ; 19EH DB 0,0,0,0,0 ; 1A1H RET ; 1A6H ; SYSVER: CALL JMP$ILPRT ; 1A7H XSO EQU 14 ;"shift out" character XSI EQU 15 ;"shift in" character DB 'Version for: ',ESC,'[7m',ESC,')0' DB 'd',XSO,'x',XSI DB 'i',XSO,'x',XSI DB 'g',XSO,'x',XSI DB 'i',XSO,'x',XSI DB 't',XSO,'x',XSI DB 'a',XSO,'x',XSI DB 'l',ESC,'[m ' IF ROBIN DB 'DEC VT180 and external modem' ENDIF ; ROBIN IF RAINBOW DB 'DEC Rainbow and external modem' ENDIF ; RAINBOW IF DECMATE DB 'DECMATE II and external modem' ENDIF ; DECMATE DB CR,LF,0 RET ;..... ; ; ; Modem I/O primitive ; ; Subroutine to output a character to the modem. ; This routine does it's own status checking. ; OUTDATA: PUSH B ;save... PUSH D ;...the... PUSH H ;...registers. MOV E,A ;move output byte into E MVI C,PUNCH ;use the BDOS function CALL BDOS ;go POP H ;restore... POP D ;...the... POP B ;...registers. RET ;..... ; ; ; Subroutine to input a character from the modem. ; This routine will wait until one becomes available. ; INDATA: PUSH B ;save... PUSH D ;...the... PUSH H ;...regesters. MVI C,READER ;use the BDOS function CALL BDOS ;go POP H ;restore... POP D ;...the... POP B ;...registers. RET ;..... ; Screen- Clearing needs more space than left above DECVT100: CALL JMP$ILPRT ; DB ESC,'[','2','J',ESC,'[','H',0 RET ; ; The Check for characters at COMM-Port using I/O redirection ; IOBYTE EQU 3 ; some definitions IF RAINBOW OR ROBIN DEFIO EQU 95H ; the "standard" setting BATIO EQU 56H ; ENDIF ; RAINBOW OR ROBIN ; IF DECMATE DEFIO EQU 81H ; the "standard" setting BATIO EQU 42H ; ENDIF ; DECMATE ; INCTL: PUSH B PUSH D PUSH H ; save the environment MVI A,BATIO ; change I/O byte STA IOBYTE CALL BCONST ; call BIOS direct - see INITMOD PUSH A MVI A,DEFIO ; change I/O byte back STA IOBYTE POP A POP H ; restore environment POP D POP B 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 TRUE. You can use several lines if ; desired. End with a 0. ; LOGON: DB 'How are you today?',CR,LF,0 ;..... ; ; ; Add your own routine here to send a break tone to reset some time-share ; computers, if desired. ; SENDBRK: RET ;..... ; ; ; Add your own routine here to put DTR low and/or send a break tone. ; Check other routines such as MDM709DP.ASM which is using this feature. ; GOODBYE: RET ;..... ; ; ; You can use this area for any special initialization or setup you may ; wish to include. Each must stop with a RET. You can check the other ; available overlays for ideas how to write your own routines if that ; may be of some help. ; INITMOD: LHLD 1 ; Get BIOS Jump-table adress LXI D,3 DAD D ; CONSTAT routine in BIOS SHLD BCONST+1 ; modify our "routine" RET ; BCONST: JMP $-$ ; address "filled in" by above code ; SETUPR: RET ; ; ; If using the Hayes Smartmodem this is unavailable without a special ; change. ; SPCLMENU: RET ; ; ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem) ; 0C00H (without Smartmodem) ;..... ; END ;