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modem7
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m7h82661.asm
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Assembly Source File
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1994-07-13
|
10KB
|
344 lines
;MDM overlay for the H/Z89 running CP/M 2.204 with the Z-89-11 card installed
;This overlay sould work, but I have not tested it..
;Equates for enhanced programmable communication interface chip 2661-3.
;Port Displacements.
; EQU 0 data
; EQU 1 status
; EQU 1 syn1/syn2/dle
; EQU 2 mode
; EQU 3 command
;
;Status Registers
; EQU 00000001b transmitter ready
; EQU 00000010b receiver ready
; EQU 00000100b transmitter empty
; EQU 00000100b data set change
; EQU 00001000b parity error
; EQU 00010000b overrun error
; EQU 00100000b frame error
; EQU 00100000b sync detected
; EQU 01000000b data carrier detect
; EQU 10000000b data set ready
;
;Mode Register 1
; EQU 00000011b mode and baudrate factor
; EQU 000h synchronous 1x rate
; EQU 001h asynchronous 1x rate
; EQU 002h asynchronous 16x rate
; EQU 003h asynchronous 64x rate
;
; EQU 00001100b character length
; EQU 000h length 5
; EQU 004h length 6
; EQU 008h length 7
; EQU 00Ch length 8
; EQU 00010000b Parity control (0=disabled, 1=enabled)
; EQU 00100000b parity type (0=odd, 1=even)
;
; EQU 11000000b asynchronous stop bit length
; EQU 040h length 1
; EQU 080h length 1.5
; EQU 0C0h length 2
;
; EQU 01000000b synchronous transparency control
; (0=normal, 1=transparent)
; EQU 10000000b number of sync characters
; (0=double, 1=single)
;
;Mode Register 2
; EQU 00001111b baud rate selection
; EQU 11110000b see text
;
;Command Register
; EQU 00000001b transmitter enable
; EQU 00000010b data terminal ready
; EQU 00000100b receiver enable
; EQU 00001000b send break (async)
; EQU 00001000b send dle (sync)
; EQU 00010000b reset status errors
; EQU 00100000b request to send
;
; EQU 11000000b operating mode
; EQU 000h normal
; EQU 040h mode1
; EQU 080h local loop back
; EQU 0C0h remote loop back
;
;BAUDRATE SELECTION VALUES
;
; EQU 0 50
; EQU 1 75
; EQU 2 110
; EQU 3 134.5
; EQU 4 150
; EQU 5 300
; EQU 6 600
; EQU 7 1200
; EQU 8 1800
; EQU 9 2000
; EQU 10 2400
; EQU 11 3600
; EQU 12 4800
; EQU 13 7200
; EQU 14 9600
; EQU 15 19200
;
;
BELL: EQU 07H ;bell
CR: EQU 0DH ;carriage return
ESC: EQU 1BH ;escape
LF: EQU 0AH ;linefeed
;
YES: EQU 0FFH
NO: EQU 0
;
;
MODDATP: EQU 0D8H ;data port for H/Z89
MODCTL1: EQU MODDATP+1 ;status port for H/Z89
MODRCVB: EQU 2 ;bit to test for received data
MODRCVR: EQU 2 ;modem receive ready
MODSNDB: EQU 1 ;bit to test for ready to send
MODSNDR: EQU 1 ;modem send ready bit
;
;
ORG 100H
;
DS 3 ;(for "JMP START" instruction)
;
PMMIMODEM: DB NO ;yes=PMMI S-100 Modem
SMARTMODEM: DB YES ;yes=HAYES Smartmodem, no=non-Hayes
TOUCHPULSE: DB 'T' ;T=touch, P=pulse (Smartmodem-only)
CLOCK: DB 20 ;clock speed in MHz x10, 25.5 MHz max.
;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
;6=2400 7=4800 8=9600 9=19200 default
BYTDLY: DB 5 ;0=0 delay 1=10ms 5=50 ms - 9=90 ms
;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
;default time for extra wait after CRLF
;in terminal mode file transfer
NOOFCOL: DB 5 ;number of DIR columns shown
SETUPTST: DB YES ;yes=user-added Setup routine
SCRNTEST: DB YES ;Cursor control routine
ACKNAK: DB YES ;yes=resend a record after any non-ACK
;no=resend a record after a valid NAK
BAKUPBYTE: DB NO ;yes=change any file same name to .BAK
CRCDFLT: DB YES ;yes=default to CRC checking
TOGGLECRC: DB YES ;yes=allow toggling of CRC to Checksum
CONVBKSP: DB NO ;yes=convert backspace to rub
TOGGLEBK: DB NO ;yes=allow toggling of bksp to rub
ADDLF: DB NO ;no=no LF after CR to send file in
;terminal mode (added by remote echo)
TOGGLELF: DB YES ;yes=allow toggling of LF after CR
TRANLOGON: DB YES ;yes=allow transmission of logon
;write logon sequence at location LOGON
SAVCCP: DB YES ;yes=do not overwrite CCP
LOCONEXTCHR: DB NO ;yes=local command if EXTCHR precedes
;no=external command if EXTCHR precedes
TOGGLELOC: DB YES ;yes=allow toggling of LOCONEXTCHR
LSTTST: DB YES ;yes=printer available on printer port
XOFFTST: DB NO ;yes=checks for XOFF from remote while
;sending a file in terminal mode
XONWAIT: DB NO ;yes=wait for XON after CR while
;sending a file in terminal mode
TOGXOFF: DB YES ;yes=allow toggling of XOFF checking
IGNORCTL: DB YES ;yes=CTL-chars above ^M not displayed
EXTRA1: DB 0 ;for future expansion
EXTRA2: DB 0 ;for future expansion
BRKCHR: DB '@'-40H ;^@ = Send a 300 ms. break tone
NOCONNCT: DB 'N'-40H ;^N = Disconnect from the phone line
LOGCHR: DB 'L'-40H ;^L = Send logon
LSTCHR: DB 'P'-40H ;^P = Toggle printer
UNSAVE: DB 'R'-40H ;^R = Close input text buffer
TRANCHR: DB 'T'-40H ;^T = Transmit file to remote
SAVECHR: DB 'Y'-40H ;^Y = Open input text buffer
EXTCHR: DB '^'-40H ;^^ = Send next character
;
;
DS 2 ;
;
IN$MODCTL1: IN MODCTL1 ! RET ;in modem control port
DS 7
OUT$MODDATP: OUT MODDATP ! RET ;out modem data port
DS 7
IN$MODDATP: IN MODDATP ! RET ;in modem data port
DS 31
;
LOGONPTR: DW LOGON ;for user message.
DS 6 ;
JMP$GOODBYE: JMP GOODBYE ;
JMP$INITMOD: JMP INITMOD ;go to user written routine
RET ! NOP ! NOP ;(by-passes PMMI routine)
RET ! NOP ! NOP ;(by-passes PMMI routine)
RET ! NOP ! NOP ;(by-passes PMMI routine)
JMP$SETUPR: JMP SETUPR ;
JMP$SPCLMENU: JMP SPCLMENU ;
JMP$SYSVER: JMP SYSVER ;
JMP$BREAK: JMP SENDBRK ;
;
;
; Do not change the following six lines.
;
JMP$ILPRT: DS 3 ;
JMP$INBUF DS 3 ;
JMP$INLNCOMP: DS 3 ;
JMP$INMODEM DS 3 ;
JMP$NXTSCRN: DS 3 ;
JMP$TIMER: DS 3 ;
;
;
CLREOS: CALL JMP$ILPRT ;
DB ESC,'J',0,0,0 ;
RET ;
;
CLRSCRN: CALL JMP$ILPRT ;
DB ESC,'E',0,0,0 ;CLEAR ENTIRE SCREEN
RET ;
;
;
SYSVER: CALL JMP$ILPRT ;
DB 'Version for Zenith Z-89-11'
DB CR,LF,0
DB 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 available) otherwise.
;
;-----------------------------------------------------------------------
;
; You can put in a message at this location which can be called up with
; CTL-O if TRANLOGON has been set YES. You can put in several lines if
; desired. End with a 0.
;
LOGON: DB 'Hello from a Heath H/Z-89 computer',CR,LF,0
;.....
;
;
; This routine allows a 300 ms. break tone to be send to reset some
; time-share computers.
;
SENDBRK: MVI A,1DH ;SEND A BREAK TONE FOR 300 MS.
JMP GOODBYE1
;.....
;
;
; 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: MVI A,05H ;SET BREAK, DTR LOW
;
GOODBYE1: OUT MODDATP+3 ;PUT COMMAND REGISTER OUT OF MODE
IN MODDATP+3 ;MAKE SURE IT IS NOW CLEAR
IN MODDATP+3 ;TRY ONCE MORE
MVI B,3 ;DELAY FOR 300 MS.
CALL JMP$TIMER
MVI A,37H ;RESET RTS, FLAGS, DTR LOW, ENABLE R/T
OUT MODDATP+3 ;SEND TO COMMAND REGISTER
IN MODDATP+3 ;CLEAR ANY INCOMING CHARS.
IN MODDATP+3 ;TRY ONCE MORE
XRA A ;CLEAR THE 'A' REG.
RET
;.....
;
;
; The following are used in setting up the 2661-3 I/O port.
;
INITMOD: MVI A,1 ;DEFAULT TRANSFER TIME TO 300 BAUD
STA MSPEED
XRA A ;SET RTS, FLAGS, DTR, DISABLE R/T
OUT MODDATP+3 ;PUT COMMAND REGISTER OUT OF MODE
IN MODDATP+3 ;MAKE SURE IT IS NOW CLEAR
IN MODDATP+3 ;TRY ONCE MORE
MVI A,4EH ;1 STOP, NO PARITY, 8 BITS, 16X ASYNCH
OUT MODDATP+2 ;SEND TO MODE REGISTER 1
;
INITMOD1: MVI A,0F5H ;START WITH 300 BAUD,
OUT MODDATP+2 ;SEND TO MODE REGISTER 2
MVI A,37H ;RESET RTS, FLAGS, DTR LOW, ENABLE R/T
OUT MODDATP+3 ;SEND TO COMMAND REGISTER
IN MODDATP+3 ;CLEAR ANY INCOMING CHARS.
IN MODDATP+3 ;TRY ONCE MORE
XRA A ;CLEAR THE 'A' REG.
RET
;.....
;
;
; The following changes the baud rate with the SET command.
;
SETUPR: LXI D,BAUDBUF
CALL JMP$ILPRT
DB 'Input Baud Rate (110, 300, 1200, 9600): ',0
CALL JMP$INBUF
LXI D,BAUDBUF+2
CALL JMP$INLNCOMP
DB '110',0
JNC OK110
CALL JMP$INLNCOMP ;COMPARE BAUDBUF+2 WITH CHARACTERS BELOW
DB '300',0
JNC OK300 ;GO IF GOT MATCH
CALL JMP$INLNCOMP
DB '1200',0
JNC OK1200
CALL JMP$INLNCOMP
DB '9600',0
JNC OK9600
CALL JMP$ILPRT ;ALL MATCHES FAILED, ASK AGAIN
DB '++ Incorrect entry ++',CR,LF,BELL,0
JMP SETUPR ;TRY AGAIN
;
OK110: MVI A,0 ;MSPEED 110 BAUD VALUE
LHLD BD110 ;GET 110 BAUD PARAMETERS IN 'HL'
JMP LOADBD ;GO LOAD THEM
;
OK300: MVI A,1
LHLD BD300
JMP LOADBD
;
OK1200: MVI A,5
LHLD BD1200
JMP LOADBD
;
OK9600: MVI A,8
LHLD BD9600
;
LOADBD: STA INITMOD+1
MOV A,L ;get least significant baud rate byte
STA INITMOD1+1 ;store in INITMOD1
JMP INITMOD ;reset 2661
;.....
;
;
; TABLE OF BAUDRATE PARAMETERS FOR 2661 I/O
;
BD110: DW 00F2H
BD300: DW 00F5H
BD1200: DW 00F7H
BD9600: DW 00FEH
;
BAUDBUF: DB 10,0
DS 10
;
;-----------------------------------------------------------------------
;
; The following routine could be used to display selections of interest
; to owners of this computer. 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
;