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- ; M7R3-1.ASM -- TRS-80 Model III w/Omikron Mapper overlay for MDM7xx
- ; includes options for Lynx autodial modem and standard RS-232 board
- ; (should also work with Model 4 and CP/M 2.2)
- ; 01/15/84
- ;
- ; 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 adapts the TRS-80 (Zero ORG CP/M) computer to the modem pro-
- ; gram. Much of the information contained here is not in the MDM7xx.ASM
- ; file. Set the Lynx options switch to NO to run with the RS-232 board.
- ;
- ; Edit this file for your preferences then follow the "TO USE:" example
- ; shown below.
- ;
- ; With the Lynx, the "SET" command will force the modem to go
- ; on-line, but cannot change the fixed baud rate of 300. With RS-232,
- ; use the "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 DDT to overlay the the results
- ; of this program to the original .COM file:
- ;
- ; A>DDT MDM7xx.COM
- ; DDT VERS 2.2
- ; NEXT PC
- ; 4580 0100
- ; -IM7R3-1.HEX (note the "I" command)
- ; -R ("R" loads in the .HEX file)
- ; NEXT PC
- ; 4580 0000
- ; -G0 (return to CP/M)
- ; A>SAVE 69 MODEM7.COM (now have a modified .COM file)
- ;
- ; = = = = = = = = = = = = = = = = = =
- ;
- ; 01/15/84 - Revised for Model 3 and Lynx modem - Gary Phillips
- ; 11/11/83 - Renamed to M7R1-1.ASM, no changes - Irv Hoff
- ; 08/27/83 - Revised to work with MDM712 - Irv Hoff
- ; 07/25/83 - Adapted for TRS-80 (zero ORG CP/M) - Phil Becker
- ; 06/22/83 - Revised to work with MDM710 - Irv Hoff
- ; 05/27/83 - 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 - First version of this file - 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
- ;
- ;PORT should be set to the base port address for either the Lynx or RS-232
- PORT: EQU 0E8H
- MODCTL1: EQU PORT+2 ;MODEM CONTROL PORT
- MODDATP: EQU PORT+3 ;MODEM DATA IN PORT
- MODDCDB: EQU 20H ;CARRIER DETECT BIT
- BAUDRP: EQU PORT+1 ;BAUD RATE PORT
- MODCTL2: EQU PORT+2 ;2ND MODEM CONTROL PORT
- MODRCVB: EQU 80H ;BIT TO TEST FOR RECEIVE
- MODRCVR: EQU 80H ;VALUE WHEN READY
- MODSNDB: EQU 40H ;BIT TO TEST FOR SEND
- MODSNDR: EQU 40H ;VALUE WHEN READY
- ;
- ORG 100H
- ;
- ;
- ; Change the clock speed to suit your system
- ;
- DS 3 ;(for "JMP START" instruction)
- LYNX: EQU YES ;yes if Lynx in use
- PMMIMODEM: DB LYNX ;yes=PMMI S-100 Modem 103H
- SMARTMODEM: DB NO ;yes=HAYES Smartmodem, no=non-PMMI 104H
- TOUCHPULSE: DB 'P' ;T=touch, P=pulse (Smartmodem-only) 105H
- CLOCK: DB 21 ;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 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 4 ;number of DIR columns shown 10AH
- SETUPTST: DB YES ;yes=user-added Setup routine 10BH
- SCRNTEST: DB YES ;Cursor control routine 10CH
- DS 1 ;reserved (old ACKNAK flag) 10DH
- 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 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=allow toggling of printer on/off 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 'K'-40H ;^K = 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
- ; note that ESC is SHIFT-BREAK under Omikron CP/M
- EXTCHR: DB ESC ;ESC = Send next character 127H
- ;
- ;
- ; a value of 55 gives a pulse rate of about 20/sec.
- ; a higher value will slow the dialing down for older
- ; phone systems.
- PULSERATE: DB 55 ;pulse rate for dialing
- CHGBAUD: DB 'B'-40H ;will force Lynx on-line
- ;from terminal mode
- IN$MODCTL1: IN MODCTL1 ;in modem control port 12AH
- PUSH B
- ANI 0DFH
- MOV B,A ;save status
- JMP CTLPT2 ;continue
- DS 1
- ;
- OUT$MODDATP: OUT MODDATP ! RET ;out modem data port 134H
- ;
- ;
- ; CONTINUE STATUS READ
- ;
- CTLPT2: IN PORT ;READ CD PORT
- ANI MODDCDB ;ISOLATE CD
- ORA B ;MERGE STATUS
- POP B
- RET
- ;
- IN$MODDATP: IN MODDATP ! RET ;in modem data port 13EH
- DS 7
- ANI$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: ANI MODSNDB ! RET ;bit to test for send ready 14EH
- CPI$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H
- IF LYNX
- IN$BAUDRP: JMP DTIMER ;simulate PMMI timer
- OUT$BAUDRP: RET ! NOP ! NOP ;don't need this one
- OUT$MODCTL1: JMP DIALHOOK ;dial port
- ENDIF
- IF NOT LYNX
- DS 6
- OUT$MODCTL1: OUT MODCTL1 ! RET ;out modem control port #1 15AH
- ENDIF
- OUT$MODCTL2: RET ! NOP ! NOP ;don't need this one 15DH
- ;
- LOGONPTR: DW LOGON ;for user message. 160H
- JMP$DIAL: DS 3 ;autodial rtn jump 162H
- JMP$DISCONNT: JMP GOODBYE ;disconnect rtn
- JMP$GOODBYE: JMP GOODBYE ; 168H
- JMP$INITMOD: JMP INITMOD ;go to user written routine 16BH
- JMP$NEWBAUD: JMP SETUPR ;force Lynx on-line 16EH
- JMP$NOPARITY: RET ! NOP ! NOP ;(by-pass PMMI routine) 171H
- JMP$PARITY: RET ! NOP ! NOP ;(by-pass PMMI routine) 174H
- JMP$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 1FH,0,0,0,0 ; 198H
- RET ; 19DH
- ;
- CLRSCRN: CALL JMP$ILPRT ; 19EH
- DB 1CH,1FH,0,0,0 ; 1A1H
- RET ; 1A6H
-
- ;
- SYSVER: CALL JMP$ILPRT ; 1A7H
- DB 'TRS-80 Model III W/Omikron Mapper',CR,LF
- IF LYNX
- DB 'Lynx autodial modem',CR,LF
- ENDIF
- DB 0 ;end msg
- 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-L if TRANLOGON has been set TRUE. You can use several lines if
- ; desired. End with a 0.
- ;
- LOGON: DB 'This is a TRS-80 using CP/M',CR,LF,0
- ;.....
- ;
- ;
- ; Add your own routine here to send a break tone to reset some time-share
- ; computers, if desired.
- ;
- SENDBRK: MVI A,0E3H ;send break
- JMP GBYE1
- ;
- ; 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.
- ;
- IF LYNX
- GOODBYE:
- XRA A ;disconnect phone line
- OUT BAUDRP
- RET
- ENDIF
- IF NOT LYNX
- GOODBYE: MVI A,0EBH ;DTR off, send BRK
- ENDIF
- GBYE1: OUT MODCTL1 ;SEND CMD
- MVI B,3
- CALL JMP$TIMER ;DELAY 300 MS
- MVI A,0ECH ;NORMAL DTR ON
- OUT MODCTL1
- RET
- ;.....
- ;
- ;
- ; You can use this area for any special initialization or setup you may
- ; wish to include. Each must stop with a RET. You can check the other
- ; available overlays for ideas how to write your own routines if that
- ; may be of some help.
- ;
- INITMOD: MVI A,1
- OUT PORT ;RESET RS232
- MVI A,0ECH ;8/N/1 DTR & RTS ON
- OUT MODCTL1
- ;
- INITM1: MVI A,1 ;SET FILE XFER TIME
- STA MSPEED
- ;
- IF NOT LYNX
- INITM2: MVI A,55H ;INIT TO 300 BAUD
- OUT BAUDRP
- ENDIF
- RET
- ;
- ;.....
- ;
- ; SETS THE MODEM SPEED VIA THE SET COMMAND.
- ;
- IF NOT LYNX
- SETUPR: LXI D,BAUDBUF ;POINT TO INPUT BUFFER
- CALL JMP$ILPRT
- DB 'INPUT BAUD RATE (300, 1200, 2400, 4800): ',0
- CALL JMP$INBUF
- LXI D,BAUDBUF+2
- CALL JMP$INLNCOMP ;TEST INPUT PARAM
- DB '300',0
- JNC OK300
- CALL JMP$INLNCOMP
- DB '1200',0
- JNC OK1200
- CALL JMP$INLNCOMP
- DB '2400',0
- JNC OK2400
- CALL JMP$INLNCOMP
- DB '4800',0
- JNC OK4800
- CALL JMP$ILPRT ;BAD PARAM
- DB '++ INCORRECT ENTRY ++',CR,LF,0
- JMP SETUPR ;TRY AGAIN
- ;
- OK300: MVI A,1
- LHLD BD300
- JMP LOADBD
- ;
- OK1200: MVI A,5
- LHLD BD1200
- JMP LOADBD
- ;
- OK2400: MVI A,6
- LHLD BD2400
- JMP LOADBD
- ;
- OK4800: MVI A,7
- LHLD BD4800
- ;
- LOADBD: STA INITM1+1 ;CHANGE MSPEED PARAM
- MOV A,L ;GET BRG BYTE
- STA INITM2+1 ;SET IT IN
- JMP INITM1 ;REINIT BAUD RATE AND RET
- ;.....
- ;
- ;
- ; TABLE OF BAUD RATE PARAMS
- ;
- BD300: DW 0055H
- BD1200: DW 0077H
- BD2400: DW 00AAH
- BD4800: DW 00CCH
- ;
- BAUDBUF: DB 10,0
- DS 10
- ENDIF
- ;.....
- IF LYNX
- SETUPR: MVI A,02H ;code to go on-line
- OUT BAUDRP
- RET
- ;
- DIALHOOK: ;flip dial hook
- ORA A ;if A=0 put on hook
- JZ DIALH2
- MVI A,02H ;else take off hook
- DIALH2: OUT BAUDRP
- RET
- ;
- DTIMER: ;simulate PMMI timer function
- DB 0D9H ;Z-80 EXX instruction
- LDA PULSERATE ;msec between flips
- MOV B,A ;put in counter
- DTIMER0:
- MVI C,126 ;delay for 1 msec @ 2MHz
- DTIMER1:
- DCR C
- JNZ DTIMER1
- DCR B
- JNZ DTIMER0
- LDA DCNT ;check last value passed
- ANI 80H ;was bit 7 set?
- JNZ DTIMER2
- ORI 80H ;zero last time, set this
- JMP DTIMER3
- DTIMER2:
- XRA A
- DTIMER3:
- MOV B,A ;save value
- IN PORT ;check carrier detect value
- ANI MODDCDB
- JZ DTIMER4
- MVI A,04H ;set PMMI carrier detect flag
- DTIMER4:
- ORA B ;add timer bit value
- DB 0D9H ;EXX to restore regs
- STA DCNT
- RET ;return with flags
- DCNT DB 0
- ENDIF
- ;
- ; If using Smartmodem or Lynx this is unavailable without a special
- ; change.
- ;
- SPCLMENU: RET
- ;
- ;
- ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem or Lynx)
- ; 0C00H (without Smartmodem)
- ;.....
- ;
- END