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m7nsp-1.asm
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Assembly Source File
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1994-07-13
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11KB
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327 lines
; M7NSP-1.ASM - NSC Starplex overlay file for MDM7xx 08/15/83
;
; 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 adapts the NSC Starplex Development System to the modem pro-
; gram. There are two versions of this program, determined by the selec-
; tion of the equate VAX. This equate set YES sets the program up for a
; single baud rate option of 2400 baud for optimum performance with the
; system connected directly to a port on the DEC VAX 11/780. This option
; requires special attention to setting up the Starplex 8253 baud rate
; clock counter. The NOT VAX option sets up the program to operate as a
; normal Modem 711 program, with selection of either 300 or 1200 baud,
; as originally written. This overlay program is an adaptation of one
; that was written for the Morrow Decision computer, using the 8251 USART.
;
; Edit this file for your preferences then follow the "TO USE:" example
; shown below.
;
; Use the "SET" command to change the baudrate when desired. It starts
; out at 300 baud when the program is first called up.
;
; 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
; 4x00 0100
; -IM7NSP-1.HEX (note the "I" command)
; -R ("R" loads in the .HEX file)
; NEXT PC
; 4x00 0000
; -G0 (return to CP/M)
; A>SAVE 66 MDM7xx.COM (now have a modified .COM file)
;
; ^
; Value may vary with version of MDM7xx
;
; = = = = = = = = = = = = = = = = = =
;
; 04/11/84 - Renamed to M7NSP-1.ASM - Dennis Recla
; 08/15/83 - Revised for use with MDM711 on the
; NSC Starplex Development System - - Charles Horn
;
; = = = = = = = = = = = = = = = = = =
;
BELL: EQU 07H ;bell
CR: EQU 0DH ;carriage return
ESC: EQU 1BH ;escape
LF: EQU 0AH ;linefeed
;
YES: EQU 0FFH
NO: EQU 0
;
;
PORT: EQU 0EEH ;Starplex data port
MODCTL1: EQU PORT+1 ;Modem status port
MODDATP: EQU PORT ;Modem data port
MODCTL2: EQU PORT+1 ;Modem control port
CLKPORT: EQU PORT-10H ;Baud clock rate port
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
;
VAX: EQU NO ;YES = for VAX ll/780; 2400 baud only
;
;
ORG 100H
;
DS 3 ;(for "JMP START" instruction)
;
PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H
SMARTMODEM: DB NO ;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 0 ;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 0 ;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 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 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 NO ;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 NO ;no=no printer on printer port (modem) 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 300 ms. break tone 120H
NOCONNCT: DB 'N'-40H ;^N = Disconnect from phone line 121H
LOGCHR: DB 'O'-40H ;^O = 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$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H
DS 12
;
LOGONPTR: DW LOGON ;for user message. 160H
DS 6 ; 162H
JMP$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$TIMER: DS 3 ; 192H
;
; Clear sequences -- CLREOS is clear to end of screen, CLRSCRN is clear
; entire screen. Last entry must be 0. Any other 0's act as NOP's.
; The SCRNTST option must be set "YES" for these to work. These are now
; set for the NSC Starplex Development System.
;
CLREOS: CALL JMP$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 NSC Starplex Development System'
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 YES. You can put in several lines if
; desired. End with a 0.
;
;
LOGON: DB 'This is a Dummy Logon Message',CR,LF,0
;.....
;
;
;=======================================================================
;
; This routine allows a 300 ms. break tone to be sent to reset some
; time-share computer.
;
SENDBRK: MVI A,1FH ;SEND BREAK TONE
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,15H ;SEND BREAK, TURN OFF DTR
;
GOODBYE1: OUT MODCTL1 ;SEND TO STATUS PORT
MVI B,3 ;WAIT 300 MS.
CALL JMP$TIMER
MVI A,07H ;NORMAL SEND/RECEIVE WITH DTR
OUT MODCTL1 ;SEND TO STATUS PORT
RET
;.....
;
;
; USART initialization -- sets the 8251A for 8 bits, 1 stop pulse,
; DTR high, using the Starplex RS-232 port no. 2, to 1200 baud then
; divides by 64 for 300, or by 16 for 1200 baud via "SET" command. Set
; at present to default to 300 baud. The VAX option is fixed at 2400 baud.
;
INITMOD: MVI A,1 ;TRANSFER TIME FOR 300 BAUD
STA MSPEED
DI ;DISABLE INTERRUPTS FOR THIS
XRA A
MVI B,4 ;INSURE
OUTMODE: OUT MODCTL1 ;..OUT
DCR B ;....OF
JNZ OUTMODE ;......MODE
MVI A,40H ;RESET UART AND
OUT MODCTL1 ;..SET TO MODE
;
INITMOD1:
IF VAX ;VAX 11/780
MVI A,4EH ;DIVIDE BY 16
ENDIF ;VAX
IF NOT VAX ;NORMAL MODEM711
MVI A,4FH ;DEFAULT TO DIVIDE BY 64 FOR 300 BAUD
ENDIF ;NOT VAX
OUT MODCTL1 ;SET MODE
MVI A,37H ;RTS,RESET ERR FLAGS,DTR,RX&TX ENABLE
OUT MODCTL1 ;MODEM STATUS PORT
IN MODDATP ;CLEAR
IN MODDATP ;..GARBAGE
;
MVI A,0B6H ;TIMER 2 MODE
OUT CLKPORT+1
IF VAX
MVI A,30H ;LS BYTE FOR 2400 BAUD
ENDIF ;VAX
IF NOT VAX
MVI A,60H ;NORMAL STARPLEX DIVISOR
ENDIF ;NOT VAX
OUT CLKPORT
MVI A,00H ;MS BYTE FOR BAUD DIVISOR
OUT CLKPORT
EI ;ENABLE INTERRUPTS
RET
;.....
;
SETUPR:
IF VAX
CALL JMP$ILPRT
DB 'Baud Rate is fixed at 2400 for VAX 11/780...',CR,LF,0
JMP INITMOD ;NONE OF THE FOLLOWING FOR VAX
ENDIF ;VAX
IF NOT VAX
LXI D,BAUDBUF ;POINT TO NEW INPUT BUFFER
CALL JMP$ILPRT
DB 'Input Baud Rate (300, 1200): ',0
CALL JMP$INBUF
LXI D,BAUDBUF+2
CALL JMP$INLNCOMP ;COMPARE BAUDBUF+2 WITH CHARACTERS BELOW
DB '300',0
JNC OK300 ;GO IF GOT MATCH
CALL JMP$INLNCOMP
DB '1200',0
JNC OK1200
CALL JMP$ILPRT ;ALL MATCHES FAILED, TELL OPERATOR
DB '++ Incorrect entry ++',CR,LF,BELL,0
JMP SETUPR ;TRY AGAIN
;
OK300: MVI A,1 ;MSPEED 300 BAUD VALUE
MVI B,4FH ;DIVIDE BY 64 FOR 300 BAUD
JMP LOADBD ;GO LOAD THEM
;
OK1200: MVI A,5
MVI B,4EH ;DIVIDE BY 16 FOR 1200 BAUD
;
;
LOADBD: STA INITMOD+1 ;CHANGE TIME-TO-SEND TO MATCH BAUDRATE
MOV A,B ;GET BAUDRATE BYTE
STA INITMOD1+1 ;STORE IN INITMOD
JMP INITMOD ;REINITIALIZE TO NEW BAUDRATE, THEN DONE
ENDIF ;NOT VAX
;
;
BAUDBUF: DB 10,0
DS 10
;.....
;
;
; (END OF INITMOD AND SETUP ROUTINES)
;=======================================================================
;
;
; These routines can be used for your equipment, be sure to end with RET
;
SPCLMENU: RET
;
;=======================================================================
;
;
; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem)
; 0C00H (without Smartmodem).
;
END
;