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Assembly Source File | 1994-07-13 | 9.9 KB | 340 lines

; M7EG-1.ASM -- EAGLE IIE overlay file for MDM7xx. ; ; Modified from the general purpose overlay by Jerry Haigwood, KY4Z ; ; This overlay adapts the MDM7xx program to the EAGLE IIE-2 series ; computer, using the Z80 SIO and Z80 CTC. ; ; 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 the EAGLE IIE series ; computer with the Z80 SIO serial port "B" and the Z80 CTC baud rate ; generator. If you are not using this equipment then you might still ; want to look over this file to gain knowledge on how to write your ; own version of this overlay. Some other overlays which might help ; are: ; ; "H8" Heath H89 overlay for 8250 I/O and programmable baud rates ; "HZ" Zenith 120 overlay for 2661B initialization and baud rates ; "XE" Xerox 820II overlay for Z80-SIO intialization, etc. ; ; 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 (substitute the correct version ; DDT VERS 2.2 number for "X") ; NEXT PC ; 4600 0100 ; -IM7EG-1.HEX (note the "I" command) ; -R ("R" loads in the .HEX file) ; NEXT PC ; 4600 0000 ; -G0 (return to CP/M) ; A>SAVE 69 MDM7XX.COM (now have a modified .COM file) ; ; = = = = = = = = = = = = = = = = = = ; ;02/14/84 - First version of this file - Jerry Haigwood ; ; = = = = = = = = = = = = = = = = = ; 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: EQU 1BH ;SIO port B MODCTL1 EQU PORT ;MODEM CONTROL PORT MODDATP: EQU PORT-1 ;MODEM DATA IN 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 CTC: EQU 02H ;CTC addr ; ORG 100H ; ; ; Change the clock speed if needed, to match 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 NO ;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 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=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$MODCTL1: IN MODCTL1 ! RET ;in modem control port 12AH DS 7 OUT$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$MODRCVR: CPI MODRCVR ! RET ;value of rcv. bit when ready 14BH ANI$MODSNDB: ANI MODSNDB ! RET ;bit to test for send ready 14EH CPI$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H DS 12 ; 156H ; ; LOGONPTR: DW LOGON ;for user message. 160H DS 6 ; 162H JMP$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$TIMER DS 3 ; 192H ; ; ; Routine to clear to end of screen. If using CLREOS and CLRSCRN, set ; SCRNTEST to YES at 010AH (above). ; CLREOS: CALL JMP$ILPRT ; 195H DB 0,0,0,0,0 ; 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB 0,0,0,0,0 ; 1A1H RET ; 1A6H ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for EAGLE IIE Computer' DB CR,LF,'Initial baud rate set for 300',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 'This is an EAGLE IIE computer',CR,LF,0 ;..... ; ; ; Add your own routine here to send a break tone to reset some time-share ; computers, if desired. ; SENDBRK: RET ;..... ; ; ; 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. ; GOODBYE: RET ;..... ; ; ; The following is used to initialize the Z80 SIO port "B". ; Baud rate is initially set to 300. ; INITMOD:DI ;no interupts during setup MVI A,1 ;default transfer speed to 300 baud STA MSPEED MVI A,04H ;write register 4 of DART OUT PORT ;contol port MVI A,84H ;x32, 1 stop bit, no parity OUT PORT MVI A,03H ;write register 3 of DART OUT PORT MVI A,0C1H ;rcv 8 bits/char, rcv enable OUT PORT MVI A,05H ;write register 5 of DART OUT PORT MVI A,6AH ;tx 8 bits/char, tx enable, rts enable OUT PORT MVI A,45H ;counter mode, control word time OUT CTC ; constant follows MVI A,208 ;x208 OUT CTC EI RET ;..... ; ; SETUPR: LXI D,BAUDBUF ;point to input buffer for INLNCOMP CALL JMP$ILPRT DB 'Input Baud Rate (300, 450, 600, 1200, 9600): ',0 CALL JMP$INBUF LXI D,BAUDBUF+2 CALL JMP$INLNCOMP ;compare BAUDBUF+2 with characters below DB '300',0 JNC B300 ;jump if good match CALL JMP$INLNCOMP DB '450',0 JNC B450 CALL JMP$INLNCOMP DB '600',0 JNC B600 CALL JMP$INLNCOMP DB '1200',0 JNC B1200 CALL JMP$INLNCOMP DB '9600',0 JNC B9600 CALL JMP$ILPRT ;no matches, tell operator DB LF,'++ Incorrect entry ++',CR,LF,LF,BELL,0 JMP SETUPR ;try it again ; B300: MVI A,1 ;MSPEED 300 baud value STA MSPEED CALL DART ;set up DART MVI A,208 ;x208 OUT CTC RET ;..... ; ; B450: MVI A,2 ;MSPEED 450 baud value STA MSPEED CALL DART ;set up DART MVI A,156 ;x156 OUT CTC RET ;..... ; ; B600: MVI A,3 ;MSPEED 600 baud value STA MSPEED CALL DART ;set up DART MVI A,104 ;x104 OUT CTC RET ;..... ; ; B1200: MVI A,5 ;MSPEED 1200 baud value STA MSPEED CALL DART ;set up DART MVI A,52 ;x52 OUT CTC RET ;..... ; ; B9600: MVI A,8 ;MSPEED 9600 baud value STA MSPEED MVI A,04H ;write register 4 OUT PORT ;control port DART MVI A,44H ;x16, 1 stop bit, no parity OUT PORT MVI A,45H ;counter mode time constant follows OUT CTC ; control word MVI A,13 ;x13 OUT CTC RET ;..... ; ; DART: MVI A,04H ;write register 4 DART OUT PORT ;control port MVI A,84H ;x32, 1 stop bit, no parity OUT PORT MVI A,45H ;time constant follows OUT CTC ; control word RET ;..... ; ; 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) ; 0C00H (without Smartmodem) ;..... ; END ;