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- ; M7R4-7.ASM -- TRS-80 Model IV w/montezuma micro overlay for MDM7xx
- ; includes options for Hayes Smartmodem and the Anchor Mark XII.
- ; Will work with a standard external modem with no options selected.
- ;
- ; 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.
- ;
- ; Edit this file for your preferences then follow the "TO USE:" example
- ; shown below.
- ;
- ; Use the "SET" command to change the baudrate when desired. It
- ; defaults to 1200 baud for the Anchor or Smartmodem, 300 baud
- ; for an external modem.
- ;
- ; 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
- ; -IM7R4-7.HEX (note the "I" command)
- ; -R ("R" loads in the .HEX file)
- ; NEXT PC
- ; 4580 0000
- ; -G0 (return to CP/M)
- ; A>SAVE 73 MODEM7.COM (now have a modified .COM file)
- ;
- ; OR you can use MLOAD24:
- ;
- ; A>MLOAD24 M740.COM=MDM740.COM,M7R4-7.HEX
- ;
- ; = = = = = = = = = = = = = = = = = =
- ; 01/27/85 - Fixed disconnect problems - Ed Richter
- ; 07/13/84 - Revised for MDM740 and MOD IV - Ed Richter
- ; 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
- ; 06/30/85 - Fixed Break tone problem - Richie Dervan
- ;
- ; = = = = = = = = = = = = = = = = =
- ;
- 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 the RS-232 port.
- ;
- PORT: EQU 0E8H ;MASTER RESET PORT
- 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)
- PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H
- SMMODEM: EQU YES ;used for this ovlay with Hayes or Anchor
- AUTDIAL: DB YES ;yes if HAYES Smartmodem or compatible
- 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 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 4 ;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
- EXTCHR: DB '^'-40h ;^^ = Send next character 127H
- DS 2
- IN$MODCTL1: JMP STATSND ;go to "get status" 12AH
- DS 7
- OUT$MODDATP: OUT MODDATP ! RET ;out modem data port 134H
- DS 7
- IN$MODDATP: IN MODDATP ! RET ;in modem data port
- DS 7
- ANI$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$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H
- IN$BAUDRP: RET ! NOP ! NOP ;by-pass this
- OUT$BAUDRP: RET ! NOP ! NOP ;don't need this one
- OUT$MODCTL1: OUT MODCTL1 ! RET ;out modem control port #1 15AH
- 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$DISCONT: DS 3 ;disconnect rtn
- JMP$GOODBYE: JMP GOODBYE ;go to disconnect 168H
- JMP$INITMOD: JMP INITMOD ;go to user written routine 16BH
- JMP$NEWBAUD: RET ! NOP ! NOP ;by-pass this 16EH
- JMP$NOPARITY: RET ! NOP ! NOP ;(by-pass PMMI routine) 171H
- JMP$PARITY: RET ! NOP ! NOP ;(by-pass PMMI routine) 174H
- JMP$SETUPR: JMP SETUPR ;initialize USART and modem 177H
- JMP$SPCLMENU: JMP SPCLMENU ; 17AH
- JMP$SYSVER: JMP SYSVER ;print header msg 17DH
- JMP$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$ILPRT ; 195H
- DB 19H,0,0,0,0 ; 198H
- RET ; 19DH
- ;
- CLRSCRN: CALL JMP$ILPRT ; 19EH
- DB 1EH,19H,0,0,0 ; 1A1H
- RET ; 1A6H
-
- ;
- SYSVER: CALL JMP$ILPRT ; 1A7H
- DB 'Trade 80 Modem 740 - Richie Dervan',CR,LF
- IF SMMODEM
- DB 'Version for Hayes or compatible',CR,LF,0
- RET
- ENDIF
- DB 'Version for external modem',CR,LF,0
- RET
- ;
- ;-----------------------------------------------------------------------
- ;
- ; NOTE: You can change the SYSVER message to be longer or shorter. The
- ; end of your last routine should terminate by 0400H (601 bytes
- ; available after start of SYSVER) if using the Hayes Smartmodem
- ; or by address 0C00H (2659 bytes) otherwise.
- ;
- ;-----------------------------------------------------------------------
- ;
- ; You can put in a message at this location which can be called up with
- ; CTL-L if TRANLOGON has been set TRUE. You can use several lines if
- ; desired. End with a 0.
- ;
- LOGON: DB 'RICHIE DERVAN',CR,LF,0
- ;
- ; Add your own routine here to send a break tone to reset some time-share
- ; computers, if desired.
- ;
- SENDBRK: MVI A,0E9H
- OUT MODCTL1 ;send break tone
- MVI B,3
- CALL JMP$TIMER ;delay 300 msec
- MVI A,0ECH
- OUT MODCTL1 ;reset RS232
- RET
- ;
- ; Routine to return status of the modem port
- ;
- STATSND: IN MODCTL1 ;in modem contol port
- PUSH B ;just in case
- ANI 0DFH ;isolate status and clear CD bit
- MOV B,A ;save status
- IN PORT ;get CD bit
- ANI MODDCDB ;isolate CD bit
- ORA B ;merge CD with status
- POP B ;restore B
- RET
- ;
- ; Add your own routine here to put DTR low and/or send a break tone.
- ;
- GOODBYE: LDA AUTDIAL ;is it auto dial modem
- ORA A
- JNZ GOODBY1 ;yes then go to disconnect
- MVI A,0EBH ;no - DTR off, send BRK
- OUT MODCTL1 ;send cmd
- MVI B,3
- CALL JMP$TIMER ;delay 300 msec
- MVI A,0ECH
- OUT MODCTL1 ;reset DTR
- RET
- ;
- GOODBY1: MVI A,0EAH ;auto dial disconnect
- OUT MODCTL1 ;drop dtr
- MVI B,3
- CALL JMP$TIMER ;delay 300 msec
- MVI A,0ECH ;reset DTR
- 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 the USART to
- MVI A,0ECH ;8,no,1,DTR, and RTS
- OUT MODCTL1
- LDA MSPEED ;what speed was selected by MSPEED
- CPI 1
- JZ OK300
- CPI 5 ;initialize to selected speed
- JZ OK1200
- CPI 6
- JZ OK2400
- CPI 7
- JZ OK4800
- ;
- ;Routine used to initialize and reset speed and baud rate
- ;
- INIT1: MVI A,0000H
- STA MSPEED
- INIT2: MVI A,0000H
- OUT BAUDRP
- RET
- ;
- ;sets the modem speed via the SET command.
- ;
- SETUPR: LXI D,BAUDBUF ;point to input buffer
- CALL JMP$ILPRT
- DB 'INPUT BAUD RATE (300, 1200, 2400, 4800, 9600): ',0
- CALL JMP$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$INLNCOMP
- DB '9600',0
- JNC OK9600
- CALL JMP$ILPRT ;bad parameter
- DB '+++ Baud rate not supported +++',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
- ;
- OK9600 MVI A,8
- LHLD BD9600
- ;
- LOADBD: STA INIT1+1
- MOV A,L
- STA INIT2+1
- JMP INIT1
- ;
- ; TABLE OF BAUD RATE PARAMS
- ;
- BD300: DW 0055H
- BD1200: DW 0077H
- BD2400: DW 00AAH
- BD4800: DW 00CCH
- BD9600: DW 00EEH
- ;
- BAUDBUF: DB 10,0
- DS 10
- ;----------------------------------------------------------------------
- ; If using Smartmodem or Anchor this is unavailable without a special
- ; change.
- ;
- SPCLMENU: RET
- ;----------------------------------------------------------------------
- ;
- ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem or Anchor)
- ; 0C00H (without Smartmodem)
- ;
- END