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m7h8-4a.asm
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Assembly Source File
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1994-07-13
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12KB
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400 lines
; M7H8-4A.ASM -- Heath/Zenith H89 overlay file for MDM7xx. 03/16/84
;
; 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 Heath/Zenith equip-
; ment with 8250 serial I/O. Much of the information contained here is
; not in the main file. If not using the Heath/Zenith H89/Z89 equipment
; some of the routines here will illustrate what you could do with your
; unit.
;
; Use the "SET" command to change baudrate when desired.
;
; 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
; DDT VERS 2.2
; NEXT PC
; 4A00 0100
; -IM7H8-4A.HEX (note the "I" command)
; -R ("R" loads in the .HEX file)
; NEXT PC
; 4A00 0000
; -G0 (return to CP/M)
; A>SAVE 73 MODEM7xx.COM (now have a modified .COM file)
;
; NOTE: If the MDM7XX file gets bigger the SAVE XX will be
; larger. Be sure to check the hex number under NEXT..
; = = = = = = = = = = = = = = = = = =
;
; 03/16/84 - Added SMARTMODEM EQU so IF/ENDIF statements would work
; M7H8-4A work corectly. - Mike Allen
; 02/26/84 - Corrected to allow SMARTMODEM YES without overrunning
; M7H8-4 0400H in assembly. - Bill Wood
;
; 02/15/84 - Made default baud-rate follow the MSPEED equate.
; M7H8-3 - Rich Berg
;
; 12/11/83 - Restricted baud-rate selection for Hayes users.
; M7H8-2 changed signon for Hayes, tells default modem
; speed at signon. - Tom Bering
;
; 11/11/83 - Renamed to M7H8-1.ASM, no changes - Irv Hoff
; 10/03/82 - First version of this file
;
; = = = = = = = = = = = = = = = = =
;
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 value at MODDATP if it does not match what you are using.
;
MODDATP: EQU 0D8H ;data port for H89
MODCTL1: EQU MODDATP+5 ;status port for H89
MODRCVB: EQU 1 ;bit to test for received data
MODRCVR: EQU 1 ;modem receive ready
MODSNDB: EQU 20H ;bit to test for ready to send
MODSNDR: EQU 20H ;modem send ready bit
;
SMARTMODEM: EQU YES ;yes=HAYES SmartModem, no=non-Hayes
;put here to make 'IF-ENDIF' happy
;
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
SMODEM: DB SMARTMODEM ;now prog & 'IF-ENDIF' happy 104H
TOUCHPULSE: DB 'P' ;T=touch, P=pulse (Smartmodem-only) 105H
CLOCK: DB 20 ;clock speed in MHz x .1, 25.5 MHz max. 106H
;20=2 MHh, 37=3.68 MHz, 40=4 MHz, etc.
MSPEED: DB 1 ;set to desired default. 1=300 2=450 107H
;4=600 5=1200 8=9600
BYTDLY: DB 1 ;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 1 ;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 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 YES ;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 YES ;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 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$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H
DS 12 ;PMMI only calls 154H
;
;
LOGONPTR: DW LOGON ;for user message. 160H
DS 6 ; 162H
JMP$GOODBYE: JMP GOODBYE ; 168H
JMP$INITMOD: JMP INIT ;go to user written routine 16BH
RET ! NOP ! NOP ;(by-passes PMMI routine) 16EH
RET ! NOP ! NOP ;(by-passes PMMI routine) 171H
RET ! NOP ! NOP ;(by-passes PMMI routine) 174H
JMP$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$TIMER DS 3 ; 192H
;
;
; The following clear the screen for the H19 or H89 terminal
;
CLREOS: CALL JMP$ILPRT ; 195H
DB ESC,'J',0,0,0 ; 198H
RET ; 19DH
;
CLRSCRN: CALL JMP$ILPRT ; 19EH
DB ESC,'E',0,0,0 ; 1A1H
RET ; 1A6H
;
;
SYSVER: CALL JMP$ILPRT ; 1A7H
IF SMARTMODEM
DB 'Version for H89 + Smartmodem 1200'
ENDIF
IF NOT SMARTMODEM
DB 'Version for H89 with 8250 I/O'
ENDIF
DB CR,LF,LF,'DEFAULT ',0
CALL BAUD
CALL JMP$ILPRT
DB ' BAUD'
DB CR,LF,0
RET
;
;.....
;
;
;-----------------------------------------------------------------------
;
; NOTE: You can change the SYSVER message to be longer or shorter. The
; end of your last routine should terminate by 0400H (601 bytes
; available after start of SYSVER) if using the Hayes Smartmodem
; or by address 0C00H (2659 bytes) otherwise.
;
;-----------------------------------------------------------------------
;
; You can put in a message at this location which can be called up with
; CTL-O if TRANLOGON has been set TRUE. You can put in several lines if
; desired. End with a 0.
;
LOGON: DB 'an H89 user',CR,0
;.....
;
;
; This routine sends a 300 ms. break tone to reset some time-share
; computers.
;
SENDBRK: MVI A,40H ;SET BREAK TONE
OUT MODDATP+3
JMP GOODBYE1 ;SEND A 300 MS. BREAK TONE
;.....
;
;
; This routine sends a 300 ms. break tone and sets DTR low for the same
; length of time to disconnect some modems such as the Bell 212A, etc.
;
GOODBYE: XRA A
OUT MODDATP+4 ;SET DTR AND RTS LOW
MVI A,40H ;SET BREAK TONE
OUT MODDATP+3
;
GOODBYE1: MVI B,3 ;WAIT 300 MS.
CALL JMP$TIMER
MVI A,03H ;RESET TO NORMAL 8 BITS
OUT MODDATP+3
MVI A,01H
OUT MODDATP+4 ;RESET DTR HIGH
RET
;.....
;
;
BAUD: LDA MSPEED
CPI 1
JNZ BAUD1
CALL JMP$ILPRT
DB '300',0
RET
BAUD1: CPI 2
JNZ BAUD2
CALL JMP$ILPRT
DB '450',0
RET
BAUD2: CPI 3
JNZ BAUD5
CALL JMP$ILPRT
DB '600',0
RET
BAUD5: CPI 5
JNZ BAUD8
CALL JMP$ILPRT
DB '1200',0
RET
BAUD8: CALL JMP$ILPRT
DB '9600',0
RET
;
;
; The following is used to initialize the H89 8250 I/O port
;
INIT: LDA MSPEED
CPI 1
JZ OK300
CPI 2
JZ OK450
CPI 3
JZ OK600
CPI 5
JZ OK1200
CPI 8
JZ OK9600
INITMOD: MVI A,1 ;default transfer speed to 300 baud
STA MSPEED
DI ;turn off interrupts for init.
XRA A
OUT MODDATP+1 ;interrupt enable register
MVI A,80H ;insure out of mode to set baud rate
OUT MODDATP+3 ;line control register
OUT MODDATP+3
;
LSPSPD: MVI A,80H ;default 'LSP' speed for 300 baud
OUT MODDATP ;register for 'LSP' speed if enabled
;
MSPSPD: MVI A,01H ;default 'MSP' speed for 300 baud
OUT MODDATP+1 ;register for 'MSP' speed if enabled
;
MVI A,03H ;8-level, 1 stop bit, no parity
OUT MODDATP+3 ;line control register
MVI A,01H ;set 'DTR' for proper modem output level
OUT MODDATP+4 ;modem control register
EI ;restore interrupts to normal
RET
;.....
;
;
; The following routine changes the baud rate for the H89 with the SET
; command.
;
IF SMARTMODEM
SETUPR: CALL JMP$ILPRT
DB 'Select 450 Baud only *AFTER* dialing modem',CR,LF
DB 'Select Baud Rate ( 300 450 1200 ) : ',0
LXI D,BAUDBUF ;point to input buffer for INLNCOMP
CALL JMP$INBUF
LXI D,BAUDBUF+2 ;compare BAUDBUF+2 w/chars below
ENDIF
;
SETUPR1:
CALL JMP$INLNCOMP
DB '300',0
JNC OK300 ;go if got match
CALL JMP$INLNCOMP
DB '450',0
JNC OK450
CALL JMP$INLNCOMP
DB '1200',0
JNC OK1200
CALL JMP$ILPRT ;all matches failed - complain
DB '++ INVALID BAUDRATE ++',CR,LF,BELL,0
JMP SETUPR ;try again
;
IF NOT SMARTMODEM
SETUPR: CALL JMP$ILPRT
DB 'SELECT BAUD RATE (300, 450, 600, 1200, 9600): ',0
LXI D,BAUDBUF
CALL JMP$INBUF
LXI D,BAUDBUF+2
CALL JMP$INLNCOMP
DB '600',0
JNC OK600
CALL JMP$INLNCOMP
DB '9600',0
JNC OK9600
JMP SETUPR1
ENDIF
;
OK300: MVI A,1 ;MSPEED 300 baud value
LHLD BD300 ;get 300 baud parameters in HL
JMP LOADBD ;go load them
;
OK450: MVI A,2
LHLD BD450
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 INITMOD+1 ;store speed to show transfer time
MOV A,L ;get least significant baud rate byte
STA LSPSPD+1 ;store in INITMOD
MOV A,H ;get most signifcant baud rate byte
STA MSPSPD+1 ;store in INITMOD
JMP INITMOD ;reset H89 8250
;
;
; Table of baud rate parameters
;
BD300: DW 0180H
BD450: DW 0100H
BD600: DW 00C0H
BD1200: DW 0060H
BD9600: DW 000CH
;
BAUDBUF: DB 10,0
DS 10
;
;-----------------------------------------------------------------------
;
; This routine can be used for your equipment, be sure to end with RET.
; If using the Hayes Smartmodem this is unavailable without a special
; change.
;
SPCLMENU: RET
;
;-----------------------------------------------------------------------
;
;
; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem)
; 0D00H (without Smartmodem)
;
END