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Assembly Source File | 1994-07-13 | 10.7 KB | 355 lines

; M7OS-1.ASM - Osborne Overlay for MDM7xx - 11/11/83 ; ; You will want to look this file over carefully. There are a number of ; options that can be used to configure the program to suit your taste. ; ; Use the "SET" command to change the baudrate when desired. It starts ; out at 300 baud when the program is first called up. ; ; NOTE: Any programmer updating the main program should check the ; address: SETUPADR -- it may have changed with your update. ; Alter accordingly. ; ; ; 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 ; -IM7OS-1.HEX (note the "I" command) ; -R (loads in the .HEX file) ; NEXT PC ; 4300 0000 ; -G0 (return to CP/M) ; A>SAVE 66 MCM7xx.COM (now have modified .COM file) ; ; = = = = = = = = = = = = = = = = = = ; ; 11/11/83 - Renamed to M7OS-1.ASM, no changes - Irv Hoff ; 07/27/83 - Renamed to work with MDM712 - Irv Hoff ; 07/01/83 - Revised to work with MDM711 - Irv Hoff ; 06/22/83 - Revised to work with MDM710 - Irv Hoff ; 05/27/83 - Revised to work with MDM709 - Irv Hoff ; 05/15/83 - Revised to work with MDM708 - Irv Hoff ; 04/11/83 - Updated to work with MDM707 - Irv Hoff ; 04/04/83 - Updated to work with MDM706 - Irv Hoff ; 02/27/83 - Updated to work with MDM705 - Irv Hoff ; 02/17/83 - Updated to work with MDM704 - Irv Hoff ; 02/07/83 - Updated to work with MDM703 - Irv Hoff ; 01/27/83 - Updated to work with MDM702 - Irv Hoff ; 01/10/83 - Updated to work with MDM701 - Irv Hoff ; 11/29/82 - Overlay file for Osborne O-1 - Paul Kelley ; ; = = = = = = = = = = = = = = = = = = ; BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; YES: EQU 0FFH NO: EQU 0 ; ; MODCTLP: EQU 2A00H ;status register for RS232 MODDATP: EQU MODCTLP+1 ;data resister for RS232 MODSNDB: EQU 2 ;bit to test for ready to send MODSNDR: EQU 2 ;modem send ready when high MODRCVB: EQU 1 ;bit to test for received data MODRCVR: EQU 1 ;modem receive ready when high ; ; ; ; Change CLOCK to match your equipment ; 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 20 ;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 NOSAVE: DB NO ;DO NOT CHANGE, MUST BE 'NO' FOR OS-1 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 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 ma. 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$MODCTLP: CALL OSTAT ! RET ;get the I/O status 12AH DS 6 ; OUT$MODDATP: CALL OSOUT ! RET ;send a character to the I/O 134H DS 6 ; IN$MODDATP: CALL OSIN ! RET ;get a character from the I/O 13EH DS 6 ; ANI$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$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H DS 12 ; 156H LOGONPTR: DW LOGON ;for user message. 160H DS 6 ; 162H JMP$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 0,0,0,0,0 ;O-1 has no clear EOS. 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB 1AH,0,0,0,0 ;O-1 clear screen, home cursor 1A1H RET ; 1A6H ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for OSBORNE O-1' 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 TRUE. You can put in several lines if ; desired. End with a 0. ; LOGON: DB 'This is an OSBORNE computer',CR,LF,0 ;..... ; ; ; You can put a routine here that sends a break tone to reset time-share ; computers. ; SENDBRK: RET ;..... ; ; ; You can put a routine here that sets DTR low and sends a break tone to ; disconnect the phone line. End with a RET. ; GOODBYE: RET ;..... ; ; ; You can put any items in this area you wish to display that are of in- ; terest to those using this equipment. If using the Hayes Smartmodem ; this is unavailable without a special address change. End the routine ; with a RET. ; SPCLMENU: RET ;..... ; ; ; This is the Osborne initialization routine. ; INITMOD: LDA FINITFLG ;FLAG SET YET? ORA A RNZ ;IF YES, ALREADY BEEN THIS WAY ONCE INR A ;OTHERWISE SET FLAG STA FINITFLG ;..AND INITIALIZE THIS ROUTINE LHLD 0005H+1 ;FIND START OF BDOS LXI D,-0100H ;GO TO FIRST PAGE AHEAD OF BDOS DAD D ;HL NOW POSITIONED ONE PAGE BELOW BDOS PUSH H ;SAVE THE ADDRESS LXI D,BDJ ;POINT TO OUR ROUTINE TO PUT THERE LXI B,CDLEN+2 ;SET LENGTH OF CODE XCHG DB 0EDH,0B0H ;Z80 LDIR ; LHLD 0005H+1 ;GET BDOS ADDRESS BACK ONCE MORE POP D ;GET THE STARTING ADDRESS OFF STACK PUSH D ;PUT IT BACK ON THE STACK INX D ;POINT TO ADDRESS POSITION XCHG ;PUT INTO 'HL' MOV M,E ;STORE 'LSP' ADDRESS INX H ;GET 'LSP' LOCATION MOV M,D ;STORE 'MSP' ADDRESS POP H ;GET THE ADDRESS BACK ONCE MORE SHLD 0005H+1 ;NEW ADDRESS TO PROTECT FOR OVERWRITE ; LXI D,OSIN-BDJ ;GET THE LENGTH OF ROUTINE TO MOVE DAD D ;COMUTE ADDRESS OF THE 'OSIN' ROUTINE SHLD IN$MODDATP+1 ;PATCH CALL FOR "GET CHAR." ROUTINE LXI D,OSOUT-OSIN DAD D SHLD OUT$MODDATP+1 ;PATCH CALL FOR "SEND CHAR." ROUTINE LXI D,OSTAT-OSOUT DAD D SHLD IN$MODCTLP+1 ;PATCH CALL FOR "GET STATUS" ROUTINE ; MVI A,1 ;MSPEED 300 baud value STA MSPEED ; ; ; SET THE INITIAL BAUD RATE TO 300 ; MVI C,56H ;FOR 300 BAUD ; STBAUD: PUSH H CALL OSET POP H XRA A ;CLEAR CARRY RET ;..... ; ; OSET: LHLD 1 ;GET BIOS+3 ADDRESS MVI L,3CH ;SPECIAL OSBORNE ROUTINE PCHL ;BRANCH TO IT ;..... ; ; ; Change the baud rate with the SET command ; SETUPR: PUSH H ; AGAIN: LXI D,BAUDBUF ;POINT TO INPUT BUFFER CALL JMP$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 MVI A,1 ;MSPEED 300 BAUD MVI C,56H ;OSBORNE 300 BAUD JNC OK ;GO IF GOT MATCH ; CALL JMP$INLNCOMP DB '1200',0 MVI A,5 ;MSPEED 1200 BAUD MVI C,55H ;OSBORNE 1200 BAUD JNC OK CALL JMP$ILPRT ;ALL MATCHES FAILED - TELL OPERATOR DB '++ Incorrect entry ++',CR,LF,BELL,0 JMP AGAIN ;TRY AGAIN ;... ; ; OK: STA MSPEED ;SET MSPEED POP H JMP STBAUD ;..... ; ; BAUDBUF: DB 10,0 DS 10 ; FINITFLG: DB 0 ;..... ; ; ; --- ROUTINES THAT GET PLACED JUST UNDER 'BDOS' OVERLAYING 'CCP' ; BDJ: JMP $-$ ;THIS GETS PATCHED TO JUMP TO BDOS ENTRY ; OSIN: DI ;DISABLE INTERRUPTS OUT 0 ;SWITCH TO ALTERNATE PAGE LDA MODDATP ;GET DATA BYTE OUT 1 ;SWITCH PAGES BACK EI ;RE-ENABLE INTERRUPTS RET ;..... ; ; OSOUT: DI ;DISABLE INTERRUPTS OUT 0 ;SWITDH TO ALTERNATE PAGE STA MODDATP ;SEND DATA BYTE OUT 1 ;SWITCH PAGES BACK EI ;RE-ENABLE INTERRUPTS RET ;..... ; ; OSTAT: DI ;DISABLE INTERRUPTS OUT 0 ;SWITCH TO ALTERNATE PAGE LDA MODCTLP ;GET STATUS BYTE OUT 1 ;SWITCH PAGES BACK EI ;RE-ENABLE INTERRUPTS RET ;..... ; ; CDLEN: EQU $-BDJ ;LENGTH OF CODE TO COPY ; ;----------------------------------------------------------------------- ; ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem) ; 0C00H (without Smartmodem) ; END ;