; 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