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Assembly Source File | 1994-07-13 | 12.5 KB | 396 lines

; M7LO-2.ASM -- Lobo Max-80 overlay file for MDM7xx. 06/01/84 ; ; This overlay adapts the MDM7xx program to Max-80 computers from Lobo. ; N O T E - This overlay sets the default baud rate to 1200 and ; starts off using serial port A. It includes code to ; initialize the SIO so that XCONFIG need not be used. ; It also allows you to change the serial port used ; via the SET command. (fv) ; ; 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. ; ; 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 ; 4x00 0100 ; -IM7LO-2.HEX (note the "I" command) ; -R ("R" loads in the .HEX file) ; NEXT PC ; 4x00 0000 ; -G0 (return to CP/M) ; A>SAVE 73 MDM7xx.COM (now have a modified .COM file) ; ^ ; This Value may vary depending upon vers of MDM7xx ; ; = = = = = = = = = = = = = = = = = = ; ; 06/01/84 - Cleaned up vers. nr. and Save - Dennis Recla ; 12/20/83 - Revised set baud routine & set default ; 1200 Baud. Also adds init coding - Fred Viles ; 11/11/83 - Renamed to M7LO-1.ASM, no changes - Irv Hoff ; 10/07/83 - Revised to include modem break - Steven J. Davidson ; 08/22/83 - Revised to work with Max-80 - Larry Richards ; 07/27/83 - Revised to work with MDM712 - Irv Hoff ; 04/04/83 - 1st version of M712GP - 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 ; ; ; Change the following information to match your equipment ; For port B use 0F7E6 (PORT) and 0F7D4 (BAUDRP). ; ; For port A use: ; PORT: EQU 0F7E4H ;MAX-80 data port MODCTL1: EQU PORT+1 ;modem control port MAX-80 MODDATP: EQU PORT ;modem data in port MODDATO: EQU PORT ;modem data out port MODDCDB: EQU 4 ;carrier detect bit MODDCDA: EQU 0 ;value when active BAUDRP: EQU 0F7D0H ;baud rate port MAX-80 MODCTL2: EQU PORT+1 ;2nd modem control port MODRCVB: EQU 1 ;bit to test for receive MODRCVR: EQU 1 ;value when ready MODSNDB: EQU 4 ;bit to test for send MODSNDR: EQU 4 ;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 YES ;yes=HAYES Smartmodem, no=non-PMMI 104H TOUCHPULSE: DB 'T' ;T=touch, P=pulse (Smartmodem-only) 105H CLOCK: DB 50 ;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 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 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 NO ;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 NO ;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 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 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 ; ; DS 2 ; 128H ; IN$MODCTL1: LDA MODCTL1 ! RET ;in modem control port MAX-80 12AH DS 6 OUT$MODDATP: STA MODDATP ! RET ;out modem data port MAX-80 134H DS 6 IN$MODDATP: LDA MODDATP ! RET ;in modem data port MAX-80 13EH DS 6 ANI$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: ANI MODSNDB ! RET ;bit to test for send ready 14EH CPI$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H DS 6 ; 156H ; The following are only used for PMMI ; routines in MDM7xx, but OUT$MODCTL1 is ; called from this overlay OUT$MODCTL1: STA MODCTL1 ;out modem control port #1 15AH OUT$MODCTL2: RET ! NOP ! NOP ;out modem control port #2 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. ; ; CLREOS: CALL JMP$ILPRT ; 195H DB 1BH,59H,0,0,0 ; 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB 1BH,2AH,0,0,0 ; 1A1H RET ; 1A6H ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for Lobo Max-80, defaults to Serial ' DB 'port A at 1200 Baud',CR,LF,0 RET ;..... ; ; ;----------------------------------------------------------------------- ; ; NOTE: You can change the SYSVER message to be longer or shorter. The ; end of your last routine should terminate by 0400H (601 bytes ; available after start of SYSVER) if using the Hayes Smartmodem ; or by address 0C00H (2659 bytes) otherwise. ; ;----------------------------------------------------------------------- ; ; You can put in a message at this location which can be called up with ; CTL-O if TRANLOGON has been set TRUE. You can use several lines if ; desired. End with a 0. ; LOGON: DB 'Hello from a Lobo MAX-80 computer',CR,LF,0 ;..... ; ; ; This routine allows a 300 ms. break tone to be sent to reset some ; time-share computers. ; SENDBRK: MVI A,5 CALL OUT$MODCTL1 MVI A,0F8H ;send a break tone JMP GOODBYE1 ;..... ; ; ; This routine sends a 300 ms. break tone and/or sets DTR low for the ; same length of time to disconnect some modems such as the Bell 212A, ; etc. The second entry (GOODBYE1) just sends the modem break, needed ; to "alert" some timesharing services. ; ; GOODBYE: MVI A,5 CALL OUT$MODCTL1 ;send to the status port MVI A,68H ;turn off dtr ; GOODBYE1: CALL OUT$MODCTL1 MVI B,3 ;wait for 300 ms. CALL JMP$TIMER MVI A,5 CALL OUT$MODCTL1 MVI A,0E8H ;restore to normal, 8 bits, dtr on, etc. CALL OUT$MODCTL1 RET ;....... ; ; ; --- Initialize Serial Port hardware and establish default baud rate. ; INITMOD: ; Set the default baud rate CALL SETDEFB ; Initialize the SIO REINIT: MVI A,01 CALL OUT$MODCTL1 ; SELECT REGISTER MVI A,0 ; SET TO DISABLE INTERRUPTS ON THIS CHANNEL CALL OUT$MODCTL1 MVI A,04H CALL OUT$MODCTL1 ; SELECT REGISTER MVI A,044H ; 16X CLOCK, 1 STOP BIT, NO PARITY CALL OUT$MODCTL1 MVI A,03 CALL OUT$MODCTL1 ; SELECT REGISTER MVI A,0C1H ; 8 BITS/CHAR., RX ENABLE, AUTO DISABLE CALL OUT$MODCTL1 MVI A,05 CALL OUT$MODCTL1 ; SELECT REGISTER MVI A,0EAH ; DTR, 8 BITS/CHAR., TX ENABLE, RTS JMP OUT$MODCTL1 ; ;..... ; ; --- Set modem speed via the SET command.--- ; First get the desired baud rate from the user. ; NOTE: only the first 3 characters of the ; baud rate string entered by the user ; is used. ; SETUPR: LXI D,BAUDBUF ;POINT TO NEW INPUT BUFFER CALL JMP$ILPRT DB 'Input Baud Rate (300, 1200, 9600, etc - space for 1200)',CR,LF DB ' or Port (A or B) or both (A300, B19200, etc): ',0 CALL JMP$INBUF LXI H,BAUDBUF+2 ; Point to users entry MOV A,M ; Get first character CPI 20h ; Space? JZ SETDEFB ; Yes, go set default baud rate STA APORT ; Store character in msg just in case SUI '0' CPI 10 ; Digit? JC FINDBD ; Yes, go find baud rate in table SUI 17 CPI 2 ; 'A' or 'B'? JNC SETERR ; No, invalid entry ; ; Reset the Serial port in use ; RLC ; 'A' = 0, 'B' = 2 PUSH PSW ; Save it ADI 0E4h ; Data port address low byte STA IN$MODDATP+1 STA OUT$MODDATP+1 INR A ; Control Port address low byte STA IN$MODCTL1+1 STA OUT$MODCTL1+1 POP PSW ; Restore 0 or 2 RLC ; Make 0 or 4 ADI 0D0h ; Baud rate port address low byte STA BDOUT+1 CALL REINIT ; Re-do initialization for new port CALL JMP$ILPRT DB CR,LF,'Serial port ' APORT: DS 1 DB ' is now in use.',CR,LF,0 ; LXI H,BAUDBUF+3 ; Point to next byte in user entry MOV A,M ; Get it SUI '0' CPI 10 ; Digit? RNC ; No, We are all done ; Yes, fall thru to set the baud rate FINDBD: SHLD PTR ; Save ptr to user entry LXI D,BDTAB ; Point to baud rate table MVI B,NTAB ; Get # of entries to search thru ; TOP OF LOOP - scanning baud rate table SLOOP: LHLD PTR ; Get ptr to users entry PUSH D ; Save the table pointer ; MVI C,3 ; Compare 3 characters of string SLOOP1: LDAX D ; Get next character from table entry CMP M ; Match user string? JNZ X1 ; No, so try next table entry INX H ; Yes, so check next character if any INX D DCR C ; JNZ SLOOP1 ; Loop to test all 3 characters ; X1: POP H ; Restore pointer to current table entry JZ SETUP ; If match, set baud rate and return LXI D,BWDS+4 DAD D ; Point to the next table entry XCHG DCR B ; Count down # of table entries JNZ SLOOP ; Loop to test next entry if any ; SETERR: CALL JMP$ILPRT ; No match found in table, tell operator DB '++ Incorrect entry ++',CR,LF,BELL,0 JMP SETUPR ; Give user another try ; ; Set up the baud rate. HL points to the command string ; SETDEFB: ; This entry sets the baud rate to the default LXI D,DEFBD+3 ; SETUP: LDAX D ; Get new MSPEED value STA MSPEED ; Store it ; Loop sending baud rate control bytes MVI C,BWDS ; Init loop counter SULOOP: INX D ; Increment control string pointer LDAX D ; Get next control byte BDOUT: STA BAUDRP ; Send it to the baud rate port DCR C ; Decrement the loop conter JNZ SULOOP ; Loop til done RET ; ; --- BAUDRATE TABLE FOR CCS 2719 BAUD RATE GENERATOR --- ; BWDS EQU 1 ; # OF BYTES TO SEND TO BAUD RATE CHIP BDTAB: DB '110',0,2 DB '300',1,5 DB '600',3,6 DEFBD: DB '120',5,7 ; 1200 BAUD (default) DB '240',6,0Ah ; 2400 DB '480',7,0Ch ; 4800 DB '960',8,0Eh ; 9600 DB '192',9,0Fh ; 19200 ; ENTAB EQU $ ; NTAB EQU (ENTAB-BDTAB)/(BWDS+4) ; # OF TABLE ENTRYS ; PTR: DS 2 ; BAUDBUF: DB 10,0 DS 10 ;..... ; ; ; If using the Hayes Smartmodem this is unavailable without a special ; change. ; SPCLMENU: RET ; ; ; NOTE: Must terminate prior to 0400H (with Smartmodem) ;