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modem7
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m7eg-1.asm
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Assembly Source File
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1994-07-13
|
10KB
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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
;