; MXO-ZB11.ASM -- Telcon Zorba overlay file for MEX10 - 05/24/84 ; ; ; Use the MEX "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 MLOAD to overlay the the results ; of this program to the original .COM file. ; ; ; ; ; = = = = = = = = = = = = = = = = = = BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; YES: EQU 0FFH NO: EQU 0 ; ; 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 ; DPORT: EQU 020H ;ZORBA Modem Data Port MODCT1: EQU DPORT+1 ;Modem status port MODCT2: EQU DPORT+1 ;Modem control port MODDAT: EQU DPORT ;Modem data port ; ; ORG 100H ; DS 3 ;(for "JMP START" instruction) ; PMODEM: DB NO ;yes=PMMI S-100 Modem 103H SMODEM: DB YES ;yes=HAYES Smartmodem 104H TPULSE: 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 3 ;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 COLUMS: DB 5 ;number of DIR columns shown 10AH SETFLG: DB YES ;yes=user-added Setup routine 10BH SCRTST: DB YES ;cursor control routine 10CH DB YES ;yes=resend a record after a non-ACK 10DH ;no=resend a record only after NAK BAKFLG: DB YES ;yes=change any file same name to .BAK 10EH CRCDFL: DB YES ;yes=default to CRC checking 10FH TOGCRC: DB YES ;yes=allow toggling of CRC to Checksum 110H CVTBS: DB NO ;yes=convert backspace to rub 111H TOGLBK: 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) TOGLF: DB YES ;yes=allow toggling of LF after CR 114H DB NO ;yes=allow transmission of logon 115H ;write logon sequence at location LOGON SAVCCP: DB YES ;yes=do not overwrite CCP 116H DB NO ;yes=local command if EXTCHR precedes 117H ;no=external command if EXTCHR precedes DB YES ;yes=allow toggling of LOCONEXTCHR 118H LSTTST: DB YES ;yes=printer available on printer port 19H XOFTST: DB NO ;yes=chcks for XOFF from remote while 11AH ;sending a file in terminal mode XONWT: DB NO ;yes=wait for XON after CR while 11BH ;sending a file in terminal mode TOGXOF: DB YES ;yes=allow toggling of XOFF checking 11CH IGNCTL: DB YES ;yes=CTL-chars above ^M not displayed 11DH EXTRA1: DB 0 ;for future expansion 11EH EXITCHR: DB 'E'-40H ;'E'= Exit to main menu 11FH BRKCHR DB '@'-40H ;Send a 300 ms. break tone 120H NOCONN: 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 TRNCHR: DB 'T'-40H ;^T = Transmit file to remote 125H SAVCHR: DB 'Y'-40H ;^Y = Open input text buffer 126H EXTCHR: DB '\'-40H ;^\ = Send next character 127H ; ; DS 2 ; 128H ; INCTL1: IN MODCT1 ! RET ;in modem control port 12AH DS 7 OTDATA: OUT MODDAT ! RET ;out modem data port 134H DS 7 INPORT: IN MODDAT ! RET ;in modem data port 13EH DS 7 MASKR: ANI 2 ! RET TESTR: CPI 2 ! RET MASKS: ANI 1 ! RET TESTS: CPI 1 ! RET DS 12 ; DS 2 ;Not used by MEX 160H DS 6 ; 162H GOODBV: JMP GOODBY ; 168H INMODV: JMP NITMOD ;go to user written routine 16BH NEWBDV: JMP NEWBAUD ;Change baudrate 16EH RET ! NOP ! NOP ;(by-passes PMMI routine) 171H RET ! NOP ! NOP ;(by-passes PMMI routine) 174H SETUPV: JMP SETCMD ; 177H DS 3 ; 17AH VERSNV: JMP SYSVER ; 17DH BREAKV: JMP SBREAK ; 180H ; ; ; Do not change the following six lines. ; ILPRTV: DS 3 ; 183H INBUFV: DS 3 ; 186H ILCMPV: DS 3 ; 189H INMDMV: DS 3 ; 18CH DS 3 ; 18FH TIMERV: 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: LXI D,EOSMSG MVI C,PRINT CALL MEX RET ; CLRSCRN: LXI D,CLSMSG MVI C,PRINT CALL MEX RET ; SYSVER: MVI C,ILP ; 1A7H CALL MEX DB '*** Version for Gemini/Telcon ZORBA ***' DB CR,LF,0 RET ; ; This routine allows a 300 ms. break tone to be sent to reset some ; time-share computers. ; SBREAK: MVI A,1FH JMP GOODBY1 ;..... ; ; ; 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. ; GOODBY: MVI A,07H ;SEND BREAK, TURN OFF DTR ; ; disabled to avoid dropping line when leaving mex ; ; GOODBY1: OUT MODCT1 ;SEND TO STATUS DPORT MVI B,3 ;DELAY ABOUT 300 MS. MVI C,TIMER CALL MEX MVI A,07H ;NORMAL SEND/RECEIVE WITH DTR OUT MODCT1 ;SEND TO STATUS DPORT RET ; ; ; ZORBA initialization -- sets CTC timer 0 for baudrate in/out. ; ; ZORBA specific equates for initialization. ; CTCCMD: EQU 03H ;8253 Timer control/status CTC0: EQU 00H ;Timer 0 (port A) LSB300 EQU 83H ;Default 300 baud MSB300 EQU 06H ; ; NITMOD: MVI A,1 ;DEFAULT TRANSFER TIME TO 300 BAUD STA MSPEED ; NITMOD1: MVI A,36H ;SQUARE WAVE MODE, PORT A OUT CTCCMD ; LSBD: MVI A,LSB300 OUT CTC0 ; MSBD: MVI A,MSB300 OUT CTC0 RET ;..... ; ; ; SETCMD: 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 '++(Only 300,450,600,1200,2400,9600,19200 supported)++',CR,LF,0 RET ; CMDTBL: DB '30','0'+80H DW OK300 ; DB '45','0'+80H DW OK450 ; 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 '30','0'+80H DW OK300 DB 0 ; ; TELL: MVI C,ILP CALL MEX ;Print current baud rate DB CR,LF,'Baud rate is now: ',0 LDA MSPEED MVI C,PRBAUD CALL MEX RET ; ; 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 ; 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 ;FALL THRU..... ; LOADBD: STA NITMOD+1 ;CHANGE TIME-TO-SEND TO MATCH BAUDRATE MOV A,L ;GET LEAST SIGNIFICANT BAUDRATE BYTE STA LSBD+1 ;STORE IN NITMOD MOV A,H ;GET MOST SIGNIFICANT BAUDRATE BYTE STA MSBD+1 ;STORE IN NITMOD JMP NITMOD ;REINITIALIZE TO NEW BAUDRATE, THEN DONE ; ; NEWBAUD: CPI 1 JZ OK300 CPI 2 JZ OK450 CPI 5 JZ OK1200 CPI 6 JZ OK2400 CPI 7 JZ OK4800 CPI 8 JZ OK9600 CPI 9 JZ OK19200 RET ; ; ; TABLE OF BAUDRATE PARAMETERS ; BD300: DW 0683H ; 300 BAUD BD450: DW 0457H ; 450 BAUD BD600: DW 0341H ; 600 BAUD BD1200: DW 01A1H ; 1200 BAUD BD2400: DW 00D0H ; 2400 BAUD BD4800: DW 0068H ; 4800 BAUD BD9600: DW 0034H ; 9600 BAUD BD19200: DW 001AH ;19200 BAUD ; BAUDBUF: DB 10,0 DS 10 ; EOSMSG: DB ESC,'J',0,0,0,'$' CLSMSG: DB ESC,'E',0,0,0,'$' ; (END OF NITMOD AND SETUP ROUTINES) ; ; NOTE: MUST TERMINATE PRIOR TO 0B00H (with Smartmodem) ; 0D00H (without Smartmodem) ; END ;