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modem7
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m7os-2.asm
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Assembly Source File
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1994-07-13
|
11KB
|
368 lines
;
; M7OS-2.ASM - Osborne Overlay for MDM7xx - 5/16/84
;
; You will want to look this file over carefully. There are a number of
; options that can be used to configure the program to suit your taste.
;
; Use the "SET" command to change the baudrate when desired. It starts
; out at 300 baud when the program is first called up.
;
; NOTE: Any programmer updating the main program should check the
; address: SETUPADR -- it may have changed with your update.
; Alter accordingly.
;
;
; 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
; 4A00 0100
; -IM7OS-2.HEX (note the "I" command)
; -R (loads in the .HEX file)
; NEXT PC
; 4A00 0000
; -G0 (return to CP/M)
; A>SAVE 73 MDM7xx.COM (now have modified .COM file)
;
; = = = = = = = = = = = = = = = = = =
;
; 05/16/84 - Added MEX conditional - Ron Fowler
; 11/11/83 - Renamed to M7OS-1.ASM, no changes - Irv Hoff
; 07/27/83 - Renamed to work with MDM712 - Irv Hoff
; 07/01/83 - Revised to work with MDM711 - Irv Hoff
; 06/22/83 - Revised to work with MDM710 - Irv Hoff
; 05/27/83 - Revised 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 - Updated to work with MDM706 - Irv Hoff
; 02/27/83 - Updated to work with MDM705 - Irv Hoff
; 02/17/83 - Updated to work with MDM704 - Irv Hoff
; 02/07/83 - Updated to work with MDM703 - Irv Hoff
; 01/27/83 - Updated to work with MDM702 - Irv Hoff
; 01/10/83 - Updated to work with MDM701 - Irv Hoff
; 11/29/82 - Overlay file for Osborne O-1 - Paul Kelley
;
;
; Set the following equate to 0 if you're running MDM,
; set it to 1 if you're running MEX (the difference is
; trivial, but allows the MEX CLONE function to work).
;
;
MEX EQU 1
;
; = = = = = = = = = = = = = = = = = =
;
BELL: EQU 07H ;bell
CR: EQU 0DH ;carriage return
ESC: EQU 1BH ;escape
LF: EQU 0AH ;linefeed
;
YES: EQU 0FFH
NO: EQU 0
;
;
MODCTLP: EQU 2A00H ;status register for RS232
MODDATP: EQU MODCTLP+1 ;data resister for RS232
MODSNDB: EQU 2 ;bit to test for ready to send
MODSNDR: EQU 2 ;modem send ready when high
MODRCVB: EQU 1 ;bit to test for received data
MODRCVR: EQU 1 ;modem receive ready when high
;
;
;
; Change CLOCK to match your equipment
;
ORG 100H
;
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 5 ;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
;no=resend a record after a valid NAK
BAKUPBYTE: DB YES ;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
NOSAVE: DB NO ;DO NOT CHANGE, MUST BE 'NO' FOR OS-1 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 NO ;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 a 300 ma. 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$MODCTLP: CALL OSTAT ! RET ;get the I/O status 12AH
DS 6
;
OUT$MODDATP: CALL OSOUT ! RET ;send a character to the I/O 134H
DS 6
;
IN$MODDATP: CALL OSIN ! RET ;get a character from the I/O 13EH
DS 6
;
ANI$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$TIMER: DS 3 ; 192H
;
CLREOS: CALL JMP$ILPRT ; 195H
DB 0,0,0,0,0 ;O-1 has no clear EOS. 198H
RET ; 19DH
;
CLRSCRN: CALL JMP$ILPRT ; 19EH
DB 1AH,0,0,0,0 ;O-1 clear screen, home cursor 1A1H
RET ; 1A6H
;
SYSVER: CALL JMP$ILPRT ; 1A7H
DB 'Version for OSBORNE O-1'
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 'xxxxxxxxx',CR,LF,0
;.....
;
;
; You can put a routine here that sends a break tone to reset time-share
; computers.
;
SENDBRK: RET
;.....
;
;
; You can put a routine here that sets DTR low and sends a break tone to
; disconnect the phone line. End with a RET.
;
GOODBYE: RET
;.....
;
;
; You can put any items in this area you wish to display that are of in-
; terest to those using this equipment. If using the Hayes Smartmodem
; this is unavailable without a special address change. End the routine
; with a RET.
;
SPCLMENU: RET
;.....
;
;
; This is the Osborne initialization routine.
;
INITMOD:
IF NOT MEX ;NOT NEEDED IN MEX: FOULS UP CLONE
LDA FINITFLG ;FLAG SET YET?
ORA A
RNZ ;IF YES, ALREADY BEEN THIS WAY ONCE
INR A ;OTHERWISE SET FLAG
STA FINITFLG ;..AND INITIALIZE THIS ROUTINE
ENDIF
;
LHLD 0005H+1 ;FIND START OF BDOS
LXI D,-0100H ;GO TO FIRST PAGE AHEAD OF BDOS
DAD D ;HL NOW POSITIONED ONE PAGE BELOW BDOS
PUSH H ;SAVE THE ADDRESS
LXI D,BDJ ;POINT TO OUR ROUTINE TO PUT THERE
LXI B,CDLEN+2 ;SET LENGTH OF CODE
XCHG
DB 0EDH,0B0H ;Z80 LDIR
;
LHLD 0005H+1 ;GET BDOS ADDRESS BACK ONCE MORE
POP D ;GET THE STARTING ADDRESS OFF STACK
PUSH D ;PUT IT BACK ON THE STACK
INX D ;POINT TO ADDRESS POSITION
XCHG ;PUT INTO 'HL'
MOV M,E ;STORE 'LSP' ADDRESS
INX H ;GET 'LSP' LOCATION
MOV M,D ;STORE 'MSP' ADDRESS
POP H ;GET THE ADDRESS BACK ONCE MORE
SHLD 0005H+1 ;NEW ADDRESS TO PROTECT FOR OVERWRITE
;
LXI D,OSIN-BDJ ;GET THE LENGTH OF ROUTINE TO MOVE
DAD D ;COMUTE ADDRESS OF THE 'OSIN' ROUTINE
SHLD IN$MODDATP+1 ;PATCH CALL FOR "GET CHAR." ROUTINE
LXI D,OSOUT-OSIN
DAD D
SHLD OUT$MODDATP+1 ;PATCH CALL FOR "SEND CHAR." ROUTINE
LXI D,OSTAT-OSOUT
DAD D
SHLD IN$MODCTLP+1 ;PATCH CALL FOR "GET STATUS" ROUTINE
;
MVI A,1 ;MSPEED 300 baud value
STA MSPEED
;
;
; SET THE INITIAL BAUD RATE TO 300
;
MVI C,56H ;FOR 300 BAUD
;
STBAUD: PUSH H
CALL OSET
POP H
XRA A ;CLEAR CARRY
RET
;.....
;
;
OSET: LHLD 1 ;GET BIOS+3 ADDRESS
MVI L,3CH ;SPECIAL OSBORNE ROUTINE
PCHL ;BRANCH TO IT
;.....
;
;
; Change the baud rate with the SET command
;
SETUPR: PUSH H
;
AGAIN: LXI D,BAUDBUF ;POINT TO INPUT BUFFER
CALL JMP$ILPRT
DB 'Input Baud Rate (300, 1200): ',0
CALL JMP$INBUF
LXI D,BAUDBUF+2
CALL JMP$INLNCOMP ;COMPARE BAUDBUF+2 WITH CHARACTERS BELOW
DB '300',0
MVI A,1 ;MSPEED 300 BAUD
MVI C,56H ;OSBORNE 300 BAUD
JNC OK ;GO IF GOT MATCH
;
CALL JMP$INLNCOMP
DB '1200',0
MVI A,5 ;MSPEED 1200 BAUD
MVI C,55H ;OSBORNE 1200 BAUD
JNC OK
CALL JMP$ILPRT ;ALL MATCHES FAILED - TELL OPERATOR
DB '++ Incorrect entry ++',CR,LF,BELL,0
JMP AGAIN ;TRY AGAIN
;...
;
;
OK: STA MSPEED ;SET MSPEED
POP H
JMP STBAUD
;.....
;
;
BAUDBUF: DB 10,0
DS 10
;
FINITFLG: DB 0
;.....
;
;
; --- ROUTINES THAT GET PLACED JUST UNDER 'BDOS' OVERLAYING 'CCP'
;
BDJ: JMP $-$ ;THIS GETS PATCHED TO JUMP TO BDOS ENTRY
;
OSIN: DI ;DISABLE INTERRUPTS
OUT 0 ;SWITCH TO ALTERNATE PAGE
LDA MODDATP ;GET DATA BYTE
OUT 1 ;SWITCH PAGES BACK
EI ;RE-ENABLE INTERRUPTS
RET
;.....
;
;
OSOUT: DI ;DISABLE INTERRUPTS
OUT 0 ;SWITDH TO ALTERNATE PAGE
STA MODDATP ;SEND DATA BYTE
OUT 1 ;SWITCH PAGES BACK
EI ;RE-ENABLE INTERRUPTS
RET
;.....
;
;
OSTAT: DI ;DISABLE INTERRUPTS
OUT 0 ;SWITCH TO ALTERNATE PAGE
LDA MODCTLP ;GET STATUS BYTE
OUT 1 ;SWITCH PAGES BACK
EI ;RE-ENABLE INTERRUPTS
RET
;.....
;
;
CDLEN: EQU $-BDJ ;LENGTH OF CODE TO COPY
;
;-----------------------------------------------------------------------
;
; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem)
; 0C00H (without Smartmodem)
;
END
;