;====================================================================== ; MXH-VI10.ASM -- Visual 1050 overlay for MexPlus ;====================================================================== ; REV EQU 10 ; Version 1.0 ; From MXO-VI10-ASM 2/18/86 Michael Conley ; From M7VI-2.ASM 12/02/85 Wilson Bent [WHB] ; Last update 03/10/85 Jim Offenbecher ; Last update 03/01/84 Steve Sanders ; ; Use the "SET" command to change the baudrate when desired. It starts ; out at 1200 baud when the program is first called up. See comments at ; the label INITMOD1: to change this to 300 baud default start-up if desired. ; ; = = = = = = = = = = = = = = = = = = ; ; Revisions/changes: ; ; 02/18/86 - Modified for MexPlus use - Michael Conley ; MexPlus changes are marked with ## ; ; 12/02/85 - Modified from M7VI-2.ASM (for MDM740.COM) ; - Wilson Bent ; ; 11/06/85 - Use BDOS calls for interrupt- - Charlie Fenton ; driven modem I/O to eliminate need ; for nulls after CR in term mode. ; ; 03/10/85 - Combined m7kp-2 and m7sy-3 for visual 1050 - ; - Jim Offenbecher ; ; = = = = = = = = = = = = = = = = = ; 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 8CH ;Visual 1050 serial output port MODCTL1: EQU PORT+1 ;Modem control port MODDATP: EQU PORT ;Modem data port MODCTL2: EQU PORT+1 ;Modem control port MODRCVB: EQU 02H ;Your bit to test for receive MODRCVR: EQU 02H ;Your value when receive ready MODSNDB: EQU 01H ;Your bit to test for send MODSNDR: EQU 01H ;Your value when send ready ; ; MEX service processor stuff ; MEX EQU 0D00H ;address of the service processor INMDM EQU 255 ;get char from port to A, CY=no more in 100 ms TIMER EQU 254 ;delay 100ms * reg B TMDINP EQU 253 ;B=# secs to wait for char, cy=no char CHEKCC EQU 252 ;check for ^C from KBD, Z=present SNDRDY EQU 251 ;test for modem-send ready RCVRDY EQU 250 ;test for modem-receive ready SNDCHR EQU 249 ;send a character to the modem (after sndrdy) RCVCHR EQU 248 ;recv a char from modem (after rcvrdy) LOOKUP EQU 247 ;table search: see CMDTBL comments for info PARSFN EQU 246 ;parse filename from input stream BDPARS EQU 245 ;parse baud-rate from input stream SBLANK EQU 244 ;scan input stream to next non-blank EVALA EQU 243 ;evaluate numeric from input stream LKAHED EQU 242 ;get nxt char w/o removing from input GNC EQU 241 ;get char from input, cy=1 if none ILP EQU 240 ;inline print DECOUT EQU 239 ;decimal output PRBAUD EQU 238 ;print baud rate ; PRINT EQU 9 ;MEX/BDOS print-string function call ; ORG 100H ; DB 0C3H ; ## JMP INSTRUCTION MexPlus DS 2 ;(for "JMP START" instruction) ; PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H SMARTMODEM: DB YES ;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 1 ;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 1 ;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 any non-ACK 10DH ;no=resend a record after a valid NAK BAKUPBYTE: DB YES ;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 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 '@'-40H ;^@ = Send a 300 ms. break tone 120H NOCXNNCT: DB 'N'-40H ;^N = Disconnect from the phone line 121H LOGCHR: DB 'L'-40H ;^L = Send logon ** NOT USED ** 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$MODCTL1: RET ;Control port input not used. 12AH DS 9 ; OUT$MODDATP: JMP BDOS4 ;out modem data port 134H DS 7 IN$MODDATP: JMP BDOS3 ;in modem data port 13EH DS 7 ANI$MODRCVB: RET ! NOP ! NOP ;BDOS7 tests receive ready 148H CPI$MODRCVR: JMP BDOS7 ;instead of IN,ANI,CPI sequence 14BH ANI$MODSNDB: RET ! NOP ! NOP ;BDOS8 tests send ready instead 14EH CPI$MODSNDR: JMP BDOS8 ;of IN, ANI, CPI sequence. 151H ; ; ## the following are two new MexPlus added vectors. DCDTEST ; returns a 0 for no carrier, 0FFH for carrier, and 0FEH if unknown ; while RNGDET returns similar results for ring-detect ; DCDTEST: JMP DCDVEC ; ## data carrier 154H RNGDET: JMP RNGVEC ; ## ring detect 157H ; DB 0,0,0,0,0 ; reserved space / assume 0 15AH SMDISC: DS 3 ; SmartModem disc / not here 15FH DIALV: DS 3 ; Dial vector / not here 162H DISCV: JMP DISCON ; Hardware disconnect 165H JMP$GOODBYE: JMP GOODBYE ; Reset port 168H JMP$INITMOD: JMP INITMOD ; go to user written routine 16BH JMP$NEWBAUD: JMP NEWBAUD ; Change baudrate 16EH RET ! NOP ! NOP ; (by-passes PMMI routine) 171H RET ! NOP ! NOP ; (by-passes PMMI routine) 174H JMP$SETUPR: JMP SETUPR ; 177H DS 3 ;(Not used by MEX) 17AH JMP$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$TIMER: DS 3 ; 192H ; ; Clear sequences -- CLREOS is clear to end of screen, CLRSCRN is clear ; entire screen. ; CLREOS: LXI D,EOSMSG ; 195H MVI C,PRINT CALL MEX RET ; CLRSCRN: LXI D,CLSMSG ; 19EH MVI C,PRINT CALL MEX RET ; ; end of fixed area - from here to 1FFFh is reserved ; ORG 200H ; ## new boundary for MexPlus 200H SYSVER: MVI C,ILP ; CALL MEX DB 'Version for Visual 1050 (version ' DB REV/10+'0' DB '.' DB REV MOD 10+'0' DB ')' DB CR,LF,0 RET ;..... ; ; This routine allows a 300 ms. break tone to be sent to reset some ; time-share computers. ; SENDBRK: MVI A,1FH ;SEND BREAK TONE JMP GOODBYE1 ;... ; ; This routine sends a 300 ms. break tone and sets DTR low for the same ; length of time to disconnect some modems such as the Bell 212A, etc. ; DISCON: ;use same routine as goodbye GOODBYE: MVI A,15H ;SEND BREAK, TURN OFF DTR ; GOODBYE1: CALL SETMCTL ;SEND TO STATUS PORT MVI B,3 ;WAIT 300 MS. CALL JMP$TIMER MVI A,07H ;NORMAL SEND/RECEIVE WITH DTR CALL SETMCTL ;SEND TO STATUS PORT RET ; ## Mexplus carrier and ring detect service calls -- for both we ; return 'we don't know' result so program ignores. DCDVEC: RNGVEC: MVI A,0FEH RET ;..... ; ;(Taken from...) ; Sanyo initialization -- sets the 8251A for 8 bits, 1 stop pulse, ; DTR high, requires jumper to be set internally to 1200 baud then ; divides by 64 for 300, or by 16 for 1200 baud via "SET" command. Set ; at present to default to 1200 baud. ; INITMOD: MVI A,5 ;TRANSFER TIME FOR 1200 BAUD STA MSPEED MVI A,3FH ;GET BYTE TO ENABLE INTERRUPTS OUT 9DH ;ENABLE THEM... ; ; The Visual 1050 provides a special function which returns the ; address of the byte where the BIOS keeps the current value of ; the modem control register. We must modify this byte whenever ; we change the value of this register, or the BIOS will clobber ; it whenever it gets an interrupt from the modem port. ; LXI D,BIOSPB ;Parameter block for BIOS call. MVI C,50 ;BDOS function for direct BIOS call. CALL 5 SHLD RSPAR ;Save the returned address ; MVI A,087H ;INSURE OUT OF MODE OUT MODCTL1 ;MODEM STATUS PORT OUT MODCTL1 ;SLIGHT EXTRA DELAY MVI A,40H ;INITIALIZE USART OUT MODCTL1 ;MODEM STATUS PORT ; INITMOD1: MVI A,4EH ;DEFAULT TO DIVIDE BY 16 FOR 1200 BAUD ;CHANGE TO 4FH TO DIVIDE BY 64 FOR 300 BAUD OUT MODCTL1 ;MODEM STATUS PORT (MODE WORD) MVI A,17H ;DTR, RCV, XMT, ERROR RESET CALL SETMCTL ;MODEM STATUS PORT ; now set the baud rate with 2 bits from the table IN 92H ;GET WHAT WAS THERE ANI 0F3H ;CLEAR OUT THE OLD BAUD RATES INITMOD3: ORI 0 ;SET NEW DEFAULT TO 1200 OUT 92H ;NEW BAUD RATE NOW SET RET ; BIOSPB: DB 30,3 ;..... ; ; Sets the modem speed via the SET command. ; - Major MEX Mods here [WHB] ; SETUPR: MVI C,SBLANK ;Any arguments? CALL MEX JC TELL ;If not, go display baud LXI D,CMDTBL MVI C,LOOKUP CALL MEX ;Parse argument PUSH H ;Save any parsed argument addrs on stack RNC ;If we have one, return to it POP H ;Oops, input not found in table MVI C,ILP CALL MEX ;Tell user input not valid DB CR,LF,'Valid baud rates are: ' DB '300, 600, 1200, 2400, 4800, 9600, 19200 only!' DB CR,LF,0 RET ; CMDTBL: DB '30','0'+80H DW OK300 DB '60','0'+80H DW OK600 DB '120','0'+80H DW OK1200 DB '240','0'+80H DW OK2400 DB '480','0'+80H DW OK4800 DB '960','0'+80H DW OK9600 DB '1920','0'+80H DW OK19200 DB 0 ; TELL: MVI C,ILP CALL MEX ;Print current baud rate DB CR,LF,'Baud rate is: ',0 LDA MSPEED MVI C,PRBAUD CALL MEX RET ; OK300: MVI A,1 LHLD BD300 JMP LOADBD ; 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 ; OK19200: MVI A,9 LHLD BD19200 ; LOADBD: STA INITMOD+1 ;CHANGE TIME-TO-SEND TO MATCH BAUDRATE MOV A,L ;GET BAUDRATE BYTE STA INITMOD3+1 ;SEND TO 'CTC' FOR NEW BAUDRATE MOV A,H STA INITMOD1+1 JMP INITMOD ;REINITIALIZE TO NEW BAUDRATE, THEN DONE ; ; TABLE OF BAUDRATE PARAMETERS ; BD300: DW 04F00H BD600: DW 04F04H BD1200: DW 04E00H BD2400: DW 04E04H BD4800: DW 04F08H BD9600: DW 04E0CH BD19200: DW 04E08H ; BAUDBUF: DB 10,0 DS 10 ; ; The following routines replace direct modem port I/O with BDOS calls. ; The Visual 1050 BIOS uses interrupt-driven I/O with ring buffers. ; This solves the problem of losing modem input while the console ; display does a carriage return. ; ; Check for input character (receive ready). BDOS7: PUSH B ;Save the registers MVI C,7 ;BDOS function number JMP BDOS78 ;Common routine for BDOS 7 & 8. ; ; Check for output character (send ready). BDOS8: PUSH B ;Save the registers MVI C,8 ;BDOS function number BDOS78: PUSH D PUSH H CALL 5 POP H ;Restore the registers POP D POP B ORA A ;BDOS returns A=0 if NOT ready. JZ CLRZ ;Return Z flag OFF if not ready. XRA A ;Set Z flag if ready. RET CLRZ: INR A ;Clear Z flag (make A non-zero). RET ; ; Input a character from modem via BIOS ring buffer. BDOS3: PUSH B ;Save the registers PUSH D PUSH H MVI C,3 ;BDOS function number CALL 5 POP H ;Restore the registers POP D POP B RET ;Input character is in A ; ; Ouput a character to modem via BIOS ring buffer. BDOS4: PUSH B ;Save the registers PUSH D PUSH H MVI C,4 ;BDOS function number MOV E,A ;Character to output must be in E CALL 5 POP H ;Restore the registers POP D POP B RET ; ; The Visual 1050 BIOS keeps the current value of the modem control ; register in a special byte. We must modify this byte whenever ; we change the value of this register, or the BIOS will clobber ; it whenever it gets an interrupt from the modem port. SETMCTL: PUSH H LHLD RSPAR ;Address of BIOS byte MOV M,A ;Save new value there OUT MODCTL1 ;Output to modem control register POP H RET ; RSPAR: DS 2 ;Address of BIOS copy of modem control register ; ; Newbaud - most popular only for now ; Not in M7VI-2.ASM - Why? [WHB] ; NEWBAUD: CPI 1 JZ OK300 cpi 3 jz OK600 CPI 5 JZ OK1200 CPI 6 JZ OK2400 cpi 7 jz OK4800 CPI 8 JZ OK9600 cpi 9 jz OK19200 RET ; ; Visual 1050 Clear Sequences: to End Of Screen and Entire Screen ; EOSMSG: DB 1Bh,5Bh,4Ah,'$' CLSMSG: DB 0Ch,'$' ; ; NOTE: MUST TERMINATE PRIOR TO 0B00H (with Smartmodem) ; 0D00H (without Smartmodem) ; END