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Assembly Source File | 1994-07-13 | 10.9 KB | 351 lines

; M7R2-2.ASM -- TRS-80 Model II overlay file for MDM7xx. 12/02/83 ; ; 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 Models II, 12, 16, and 16B computers to ; MDM7xx. If Pickles & Trout CP/M and a Smartmodem are used, no changes ; should be required. ; ; 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 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 ; 4300 0100 ; -IM7R2-2.HEX (note the "I" command) ; -R ("R" loads in the .HEX file) ; NEXT PC ; 4300 0000 ; -G0 (return to CP/M) ; A>SAVE 66 MDM7xx.COM (now have a modified .COM file) ; ; = = = = = = = = = = = = = = = = = = ; ; 12/02/83 - M7R2-2.ASM ; Removed restriction to Pickles & Trout, ; SET now works, added comments describing ; creation of a port B version, added ; 600 and 9600 baud options for ; non-modem use. - Herb Robinson ; 11/11/83 - Renamed to M7R2-1.ASM, no changes - Irv Hoff ; 09/18/83 - Modified M712XE.ASM for ; TRS-80 Model II and Pickles ; & Trout CP/M (should also ; work on Mods 12 and 16) - Joseph Katz ; ; = = = = = = = = = = = = = = = = = = ; BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; YES: EQU 0FFH NO: EQU 0 ; ; PORT: EQU 0F4H ;TRS-80 II serial output port A ;(port A = 0F4H, port B = 0F5H) MODCTL1: EQU PORT+2 ;Modem control port MODDATP: EQU PORT ;Modem data port MODCTL2: EQU PORT+2 ;Modem status port MODRCVB: EQU 01H ;Bit to test for receive MODRCVR: EQU 01H ;Value when receive ready MODSNDB: EQU 04H ;Bit to test for send MODSNDR: EQU 04H ;Value when send 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 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 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 Z ;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 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 NO ;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=printer available on printer port 119H XOFFTST: DB NO ;yes=check 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 a 300 ms. break tone 120H 20H 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$MODCTL1: MVI A,10H ;channel 0, reset interrupts 12AH OUT MODCTL1 IN MODCTL1 ;get the status bits RET DS 3 ; OUT$MODDATP: OUT MODDATP ! RET ;out modem data port 134H DS 7 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$MODRCVR: CPI MODRCVR ! RET ;value of receive bit when rdy 14BH ANI$MODSNDB: ANI MODSNDB ! RET ;bit to test for send ready 14EH CPI$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H DS 6 ; 154H OUT$MODCTL1: OUT MODCTL1 ! RET ;out modem control port 15AH OUT$MODCTL2: OUT MODCTL2 ! RET ;out modem status port 15DH ; ; LOGONPTR: DW LOGON ;for user message. 160H DS 6 ; 162H JMP$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$TIMER: DS 3 ; 192H ; ; ; Clear sequences -- CLREOS is clear to end of screen, CLRSCRN is clear ; entire screen. Last entry must be 0. Any other 0's act as NOP's. ; These are currently set up for the Pickles & Trout video driver, and ; should be changed if using a different driver. ; CLREOS: CALL JMP$ILPRT ; 195H DB 02H,0,0,0,0 ; 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB 0CH,0,0,0,0 ; 1A1H RET ; 1A6H ; ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for TRS-80 Model II, serial port A',CR,LF DB 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 put in several lines if ; desired. End with a 0. ; ; LOGON: DB 'This is a TRS-80 computer',CR,LF,0 ;..... ; ; ; This routine allows a 300 ms. break tone to be sent to reset some ; time-shar computers. ; SENDBRK: MVI A,5 OUT MODCTL1 MVI A,0F8H ;SEND A BREAK TONE JMP GOODBYE1 ;..... ; ; ; 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. ; GOODBYE: MVI A,5 OUT MODCTL1 ;SEND TO THE STATUS PORT MVI A,68H ;TURN OFF DTR ; GOODBYE1: OUT MODCTL1 MVI B,3 ;WAIT FOR 300 MS. CALL JMP$TIMER MVI A,5 OUT MODCTL1 MVI A,0E8H ;RESTORE TO NORMAL, 8 BITS, DTR ON, ETC. OUT MODCTL1 RET ;..... ; ; ; TRS-80 II, 12, 16, 16B initialization -- sets CTC timer 0 and 1 ; (ports 0F0H and 0F1H, resp.) for receive and transmit clocks, resp., ; thereby setting the baudrate. ; INITMOD: MVI A,0 ;SELECT REGISTER OUT MODCTL1 MVI A,18H ;THROW OUT OF MODE OUT MODCTL1 MVI A,04H ;SELECT REGISTER OUT MODCTL1 MVI A,44H ;SET ASCII PARAMETERS OUT MODCTL1 MVI A,03H ;SELECT REG. OUT MODCTL1 MVI A,0C1H ;ENABLE RECEIVE OUT MODCTL1 MVI A,05H ;SELECT REG. OUT MODCTL1 MVI A,0EAH ;ENABLE SEND, 'DTR', 'RTS' OUT MODCTL1 ; INITMOD1: MVI A,1 ;DEFAULT TRANSFER TIME TO 300 BAUD STA MSPEED MVI A,07H OUT 0F0H ;delete this instruction for TRS-80 port B OUT 0F1H ;0F1H for TRS-80 port A, 0F2H for port B ; INITMOD2: MVI A,34H ;INITIALIZE TO 300 BAUD OUT 0F0H ;delete this instruction for TRS-80 port B OUT 0F1H ;0F1H for TRS-80 port A, 0F2H for port B RET ;..... ; ; ; Setup routine to allow changing modem speed with the SET command. ; SETUPR: LXI D,BAUDBUF ;POINT TO NEW INPUT BUFFER CALL JMP$ILPRT DB 'Input Baud Rate (300, 600, 1200, 9600): ',0 CALL JMP$INBUF LXI D,BAUDBUF+2 CALL JMP$INLNCOMP ;COMPARE BAUDBUF+2 WITH CHARACTERS BELOW DB '300',0 JNC OK300 ;GO IF GOT MATCH CALL JMP$INLNCOMP ;SMODEM DOESN'T SUPPORT DB '600',0 JNC OK600 CALL JMP$INLNCOMP DB '1200',0 JNC OK1200 CALL JMP$INLNCOMP ;SMODEM DOESN'T SUPPORT 9600 DB '9600',0 JNC OK9600 CALL JMP$ILPRT ;ALL MATCHES FAILED, TELL OPERATOR DB '++ Incorrect entry ++',CR,LF,BELL,0 JMP SETUPR ;TRY AGAIN ; OK300: MVI A,1 LHLD BD300 JMP LOADBD ; OK600: MVI A,3 LHLD BD600 JMP LOADBD ; OK1200: MVI A,5 LHLD BD1200 JMP LOADBD ; OK9600: MVI A,8 LHLD BD9600 ; LOADBD: STA INITMOD1+1 ;CHANGE TIME-TO-SEND TO MATCH BAUDRATE MOV A,H STA INITMOD1+6 ;SEND TO 'CTC' FOR NEW BAUDRATE MOV A,L ;GET BAUDRATE BYTE STA INITMOD2+1 ;SEND TO 'CTC' TIMER FOR NEW BAUDRATE JMP INITMOD1 ;REINITIALIZE TO NEW BAUDRATE, THEN DONE ; ; ; TABLE OF BAUDRATE PARAMETERS ; BD300: DW 0734H BD600: DW 071AH BD1200: DW 070DH BD9600: DW 470DH ; BAUDBUF: DB 10,0 DS 10 ; ;----------------------------------------------------------------------- ; ; The following routine can be used as an auxiliary menu for notes of ; interest to a particular computer, etc. If using the Hayes Smartmodem ; this is unavailable without a special address change. ; SPCLMENU: RET ; ;----------------------------------------------------------------------- ; ; ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem) ; 0C00H (without Smartmodem) ; END ; ------------- ; ; ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem) ; 0C00H (without Smartmodem) ; END