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m7h8-7.asm
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Assembly Source File
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1994-07-13
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12KB
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403 lines
; M7H8-6.ASM -- Heath/Zenith H89 overlay file for MDM7xx. 01/24/85
;
; 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 MDM740.COM
; DDT VERS 2.2
; NEXT PC
; 4A00 0100
; -IM7H8-6.HEX (note the "I" command)
; -R ("R" loads in the .HEX file)
; NEXT PC
; 4A00 0000
; -G0 (return to CP/M)
; A>SAVE 73 MDM.COM (now have a modified .COM file)
;
; NOTE: If the MDM7nn file gets bigger the SAVE 73 will be
; larger. Be sure to check the hex number under NEXT..
;
;-----------------------------------------------------------------------
;
; Quick, easy alternate method of combining this overlay with
; MDM740.COM file using MLOAD.COM (Current version is MLOAD24.)
;
; A>MLOAD MDM7.COM=MDM740.COM,M7H8-n.HEX <ret>
;
; = = = = = = = = = = = = = = = = = =
;
; 02/12/85 - Set to default to 1200 bps, added SETSPD option. Use the
; M7H8-7 M7RV-6.ASM overlay for use with Racal-Vadic 1200v or 2400v
; smartmodems after using this overlay first. Other changes.
; - Irv Hoff
;
; 01/24/85 - Added support for Racal Vadic/Hayes 2400 baud smartmodems
; M7H8-6 - Larry Snyder
;
; 07/15/84 - Added support for 2400 baud modems
; M7H8-5 - Larry Snyder
;
; 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. Changed
; M7H8-2 signon for Hayes, tells default modem speed at signon.
; - Tom Bering
;
; 10/03/82 - First version of this file - Irv Hoff
;
;-----------------------------------------------------------------------
;
;
; Set the speed you wish the unit to automatically initialize at:
;
SETSPD EQU 5 ; 2=300, 5=1200, 6=2400 bps (select one)
;
;-----------------------------------------------------------------------
;
;
NO EQU 0
YES EQU 0FFH ; (must be a 8-bit value for ASM.COM)
;
;
BELL EQU 07H ; Bell
CR EQU 0DH ; Carriage return
ESC EQU 1BH ; Escape
LF EQU 0AH ; Linefeed
;
;
; 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
;
;-----------------------------------------------------------------------
;
;
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 plug in modem 103H
AUTODIAL: DB YES ;yes=Hayes protocol, no=other 104H
TOUCHPULSE: DB 'T' ;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 SETSPD ;set to desired default. 1=300 2=450 107H
;4=600 5=1200 6=2400 8=9600
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
RETRY: DB YES ;reset the error limit to try again 10DH
;no abort after 10 consecutive errors
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
CONVRUB: DB YES ;yes=convert rub to backspace 111H
TOGGLERUB: DB YES ;yes=allow toggling rub to backspace 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 NO ;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
DB 'Version for Heath H89 with serial modem'
DB CR,LF,0
CALL JMP$ILPRT
DB 'Default speed: ',0
CALL BAUD
CALL JMP$ILPRT
DB ' bps',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 'Hello from an Heath 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$TIMER
MVI A,03H ; Reset to normal 8 bits
OUT MODDATP+3
MVI A,01H
OUT MODDATP+4 ; Reset DTR high
RET
;.....
;
;
; Auto-selects the default message baudrate from SELECT option at start
; of overlay.
;
BAUD: LDA MSPEED
CPI 1
JNZ BAUD5
CALL JMP$ILPRT
DB '300',0
RET
;
BAUD5: CPI 5
JNZ BAUD6
CALL JMP$ILPRT
DB '1200',0
RET
;
BAUD6: CPI 6
JNZ BAUD8
CALL JMP$ILPRT
DB '2400',0
RET
;
BAUD8: CALL JMP$ILPRT
DB '9600',0
RET
;
;
; Auto selects baud rate from SELECT option near start of overlay, which
; initializes the H89 8250 I/O port.
;
INIT: LDA MSPEED
CPI 1
JZ OK300
CPI 5
JZ OK1200
CPI 6
JZ OK2400
CPI 8
JZ OK9600
;
INITMOD:MVI A,5 ; Default transfer speed to 1200 baud
STA MSPEED
DI ; Turn off interrupts for initialization
XRA A
OUT MODDATP+1 ; Interrupt enable register
MVI A,80H ; Insure out of mode to set baud rate
OUT MODDATP+3 ; Line control register
OUT MODDATP+3
;
LSPSPD: MVI A,60H ; Default 'LSP' speed for 1200 baud
OUT MODDATP ; Register for 'LSP' speed if enabled
;
MSPSPD: MVI A,00H ; Default 'MSP' speed for 1200 baud
OUT MODDATP+1 ; Register for 'MSP' speed if enabled
;
MVI A,03H ; 8-level, 1 stop bit, no parity
OUT MODDATP+3 ; Line control register
MVI A,01H ; Set 'DTR' nromal
OUT MODDATP+4 ; Modem control register
EI ; Restore interrupts to normal
RET
;.....
;
;
; The following routine changes the baud rate for the H89 with the SET
; command.
;
SETUPR: CALL JMP$ILPRT
DB 'Select Baud Rate (300, 1200, 2400, 9600) : ',0
LXI D,BAUDBUF ; Point to input buffer for INLNCOMP
CALL JMP$INBUF
LXI D,BAUDBUF+2 ; Compare BAUDBUF+2 with/chars. below
CALL JMP$INLNCOMP
DB '1200',0
JNC OK1200
CALL JMP$INLNCOMP
DB '2400',0
JNC OK2400
CALL JMP$INLNCOMP
DB '9600',0
JNC OK9600
CALL JMP$ILPRT ; All matches failed, tell operator
DB '++ Incorrect entry ++',CR,LF,BELL,0
JMP SETUPR ; None of these, ask again
;
OK300: MVI A,1 ; MSPEED 300 baud value
LHLD BD300 ; Get 300 baud parameters in HL
JMP LOADBD ; Go load them
;
OK1200: MVI A,5
LHLD BD1200
JMP LOADBD
;
OK2400: MVI A,6
LHLD BD2400
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 for new speed
;.....
;
;
; Table of baud rate parameters
;
BD300: DW 0180H
BD1200: DW 0060H
BD2400: DW 0030H
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