; M7NA-1.ASM -- North Star Advantage overlay for MDM7xx - 11/11/83 ; ; Edit this file for your preferences then follow the "TO USE:" example ; shown below. ; ; Use the MDM7xx "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 ; -IM7NA-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 M7NA-1.ASM, no changes - Irv Hoff ; 09/14/83 - Changed M712HZ.ASM TO M712AF.ASM - Robert Lehman ; 07/27/83 - Renamed to work with MDM712 - Irv Hoff ; 02/17/83 - 1st version of M712HZ.ASM - 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 50H ;Slot 1 for Advantage BAUDRP: EQU PORT+8 MODDATP: EQU PORT ;data port for Advantage MODCTL1: EQU PORT+1 ;status port for Advantage 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 ; ; ; The Advantage uses the 8251 ; ; 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-Hayes 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 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 NO ;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 NO ;yes=printer available on printer port 119H XOFFTST: DB NO ;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 125H EXTCHR: DB '^'-40H ;^^ = Send next character 126H ; ; 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$INITMOD: JMP INITMOD ;go to user written routine 16BH RET ! NOP ! NOP ;(by-passes PMMI routine) 16EH RET ! NOP ! NOP ;(by-passes PMMI routine) 171H RET ! NOP ! NOP ;(by-passes PMMI routine) 174H JMP$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$TIMER: DS 3 ; 192H ; ; CLREOS: CALL JMP$ILPRT ; 195H DB 0FH,0,0,0,0 ; 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB 1EH,0FH,0,0,0 ;CLEAR ENTIRE SCREEN 1A1H RET ;HOME THEN CLEAR ; ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for North Star Advantage - Slot 1' 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 North Star Advantage computer',CR,LF,0 ;..... ; ; ; This routine allows a 300 ms. break tone to be send to reset some ; time-share computers. ; SENDBRK: MVI A,08H ;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,0AH ;set break, DTR low ; GOODBYE1: OUT MODCTL1 ;put command register out of mode IN MODCTL1 ;make sure it is now clear IN MODCTL1 ;try once more MVI B,3 ;delay for 300 ms. CALL JMP$TIMER MVI A,37H ;reset RTS, flags, DTR low, enable R/T OUT MODCTL1 ;send to command register IN MODCTL1 ;clear any incoming chars. IN MODCTL1 ;try once more XRA A ;clear the 'A' reg. RET ;..... ; ; ; The following are used in setting up the slot 1. ; INITMOD: MVI A,1 ;default transfer time to 300 baud STA MSPEED XRA A ;set RTS, flags, DTR, disable R/T OUT MODCTL1 ;put command register out of mode IN MODCTL1 ;make sure it is now clear IN MODCTL1 ;try once more MVI A,0AAH OUT MODCTL1 MVI A,40H OUT MODCTL1 MVI A,4EH ;1 stop, no parity, 8 bits, 16x asynch OUT MODCTL1 ;send to mode register 1 ; INITMOD1: MVI A,40H ;start with 300 baud, internal 4 clock OUT BAUDRP ;send to baud rate port MVI A,37H ;reset RTS, flags, DTR low, enable R/T OUT MODCTL1 ;send to command register IN MODCTL1 ;clear any incoming chars. IN MODCTL1 ;try once more XRA A ;clear the 'A' reg. RET ;..... ; ; ; The following changes the baud rate with the set command. ; SETUPR: LXI D,BAUDBUF CALL JMP$ILPRT DB 'Input Baud Rate (300, 1200, 9600, 19200): ',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$INLNCOMP DB '1200',0 JNC OK1200 CALL JMP$INLNCOMP DB '9600',0 JNC OK9600 CALL JMP$INLNCOMP DB '19200',0 JNC OK19200 CALL JMP$ILPRT ;all matches failed, ask again DB '++ Incorrect entry ++',CR,LF,BELL,0 JMP SETUPR ;try again ; OK300: MVI A,1 LHLD BD300 JMP LOADBD ; OK1200: MVI A,5 LHLD BD1200 JMP LOADBD ; OK9600: MVI A,8 LHLD BD9600 JMP LOADBD ; OK19200 MVI A,9 LHLD BD19200 ; LOADBD: STA INITMOD+1 MOV A,L ;get least significant baud rate byte STA INITMOD1+1 ;store in INITMOD1 JMP INITMOD ;reset advantage slot 1 ;..... ; ; ; Table of baudrate parameters for hsio-4 board i/o ; BD300: DW 0040H BD1200: DW 0070H BD9600: DW 007EH BD19200: DW 007FH ; 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 ; PR ;try again ; OK300: MVI A,1 LHLD BD300 JMP LOADBD ; OK