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- ; M7NE-1.ASM - NEC PC-8001 computer overlay file for MDM712 - 11/11/83
- ;
- ; 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 NEC PC-8001 computer to the modem program. While
- ; this computer has two serial ports, one is used for the CRT/keyboard
- ; and the other for the printer. To use this overlay, you must set the
- ; serial port for 1200 baud, as the program then converts that to 300
- ; baud whenever needed.
- ;
- ; 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
- ; 4300 0100
- ; -IM7NE-1.HEX (note the "I" command)
- ; -R ("R" loads in the .HEX file)
- ; NEXT PC
- ; 4300 0000
- ; -G0 (return to CP/M)
- ; A>SAVE 66 MDM7xx.COM (now have a modified .COM file)
- ;
- ; = = = = = = = = = = = = = = = = = =
- ;
- ; 11/11/83 - Renamed to M7NE-1.ASM, no changes - Irv Hoff
- ; 07/27/83 - Renamed for use with MDM712 - Irv Hoff
- ; 07/01/83 - Revised for use with MDM711 - Irv Hoff
- ; 06/22/83 - Revised for use with MDM710 - Irv Hoff
- ; 06/22/83 - Altered for use with MDM710 - Irv Hoff
- ; 06/22/83 - Altered MDM708DP for the NEC 8001
- ; computer using an external modem - Irv Hoff
- ;
- ; = = = = = = = = = = = = = = = = = =
- ;
- 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 20H ;NEC PC-8001 serial port
- MODCTL1: EQU PORT+1 ;Modem status port
- MODCTL2: EQU PORT+1 ;Modem control port
- MODDATP: EQU PORT ;Modem data port
- ;
- ;
- ORG 100H
- ;
- DS 3 ;(for "JMP START" instruction)
- ;
- PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H
- SMARTMODEM: DB NO ;yes=HAYES Smartmodem 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 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 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 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 NO ;yes=convert backspace to rub 111H
- TOGGLEBK: DB NO ;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 NO ;no=printer not available (modem) 119H
- XOFFTST: DB NO ;yes=chcks 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$MODDATP: IN MODDATP ! RET ;in modem data port 13EH
- DS 31
- ;
- LOGONPTR: DW LOGON ;for user message. 160H
- DS 6 ; 162H
- JMP$GOODBYE: JMP GOODBYE ; 168H
- JMP$INITMOD: JMP INITMOD ;go to user written routine 16BH
- RET ! NOP ! NOP ;(by-passes PMMI port) 16EH
- RET ! NOP ! NOP ;(by-passes PMMI routine) 171H
- RET ! NOP ! NOP ;(by-passes PMMI routine) 174H
- JMP$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$TIMER: DS 3 ; 192H
- ;
- ;
- ; Clear sequences -- CLREOS is clear to end of screen, CLRSCRN is clear
- ; entire screen. Last entry must be 0. Any other 0's act as NOP's.
- ; The SCRNTST option must be set "YES" for these to work.
- ;
- CLREOS: CALL JMP$ILPRT ; 195H
- DB ESC,59H,0,0,0 ; 198H
- RET ; 19DH
- ;
- CLRSCRN: CALL JMP$ILPRT ; 19EH
- DB 1EH,ESC,59H,0,0 ; 1A1H
- RET ; 1A6
- ;
- ;
- SYSVER: CALL JMP$ILPRT ; 1A7H
- DB 'Version for NEC PC-8001 computers'
- 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 NEC PC-8001 computer',CR,LF,0
- ;.....
- ;
- ;
- ;=======================================================================
- ;
- ; This routine allows a 300 ms. break tone to be send to reset some
- ; time-share computers.
- ;
- SENDBRK: MVI A,1FH ;SEND A 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 modesm 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$TIMER
- MVI A,07H ;NORMAL SEND/RECEIVE WITH DTR
- OUT MODCTL1 ;SEND TO STATUS PORT
- RET
- ;.....
- ;
- ;
- ; NEC PC-8001 initialization -- sets the 8251A for 8 bits, 1 stop pulse,
- ; DTR high, requires dip switches be set internally to 1200 baud then
- ; divides by 64 for 300, or by 16 for 1200 baud via "SET" command. Set
- ; at present to default to 300 baud.
- ;
- INITMOD: MVI A,1 ;TRANSFER TIME FOR 300 BAUD
- STA MSPEED
- MVI A,087H ;INSURE OUT OF MODE
- OUT MODCTL1 ;MODEM STATUS PORT
- OUT MODCTL1 ;SLIGHT EXTRA DELAY
- MVI A,40H ;INITIALIZE USART
- OUT MODCTL1 ;MODEM STATUS PORT
- ;
- INITMOD1: MVI A,4FH ;DEFAULT TO DIVIDE BY 64 FOR 300 BAUD
- OUT MODCTL1 ;MODEM STATUS PORT
- MVI A,17H ;DTR, RCV, XMT, ERROR RESET
- OUT MODCTL1 ;MODEM STATUS PORT
- IN PORT ;CLEAR DATA PORT
- RET
- ;.....
- ;
- ;
- SETUPR: LXI D,BAUDBUF ;POINT TO NEW INPUT BUFFER
- CALL JMP$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
- ;
- ;
- BAUDBUF: DB 10,0
- DS 10
- ;.....
- ;
- ;
- ; (END OF INITMOD AND SETUP ROUTINES)
- ;=======================================================================
- ;
- ;
- ; These routines can be used for your equipment. End with RET. If
- ; using the Hayes Smartmodem this is unavailable without a special ad-
- ; dress change.
- ;
- SPCLMENU: RET
- ;
- ;=======================================================================
- ;
- ;
- ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem)
- ; 0C00H (without Smartmodem)
- ;
- END
- ;
- TCHES FAILED, TELL OPERATOR
- DB '++ Incorrect entry ++',CR,LF,BELL,0
- JMP SETUPR ;