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Assembly Source File | 1994-07-13 | 9.7 KB | 309 lines

; M7IM-1.ASM -- IMS 5000 with IMS 440 I/O overlay for MDM712. 09/29/83 ; ; 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 places particular emphasis on using the IMS 5000 equip- ; ment with IMS 440 I/O board. Much of the information contained here is ; not in the main file. If not using IMS 5000 equipment ; some of the routines here will illustrate what you could do with your ; unit. ; ; Use the "SET" command to change baudrate when desired. ; ; Edit this file for your preferences then follow the "TO USE:" example ; shown below. ; ; ; 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 MDM715.COM ; DDT VERS 2.2 ; NEXT PC ; 4300 0100 ; -IM7IM-1.HEX (note the "I" command) ; -R ("R" loads in the .HEX file) ; NEXT PC ; 4300 0000 ; -G0 (return to CP/M) ; A>SAVE 68 MDM715.COM (now have a modified .COM file) ; ; = = = = = = = = = = = = = = = = = = ; ; 12/26/83 - Renamed to match standard overlay file names. DDT directions ; changed to reflect new size of MDM715 - Robert Flagg ; ; 09/29/83 - First version of this file - Steve Noland ; ; = = = = = = = = = = = = = = = = = = ; BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; YES: EQU 0FFH NO: EQU 0 ; ; ; Change the value at MODDATP if it does not match what you are using. ; BAUDRP: EQU 15H ;baud rate port on counter/timer MODDATP: EQU 013H ;data port for IMS 440 MODCTL1: EQU 012H ;status port for IMS 440 MODRCVB: EQU 1 ;bit to test for received data MODRCVR: EQU 1 ;modem receive ready MODSNDB: EQU 2 ;bit to test for ready to send MODSNDR: EQU 2 ;modem send ready bit ; ; ORG 100H ; ; Change the clock speed if needed, to match your system ; 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 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 2 ;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 YES ;yes=printer available on printer port 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 NO ;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$MODDATP: IN MODDATP ! RET ;in modem data port 13EH DS 7 ANI$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$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H DS 12 ;PMMI only calls 154H ; ; LOGONPTR: DW LOGON ;for user message. 160H DS 6 ; 162H JMP$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$TIMER DS 3 ; 192H ; ; ; The following clear the screen for the TVI 925 terminal ; CLREOS: CALL JMP$ILPRT ; 195H DB ESC,79H,0,0,0 ;ESC 'y' - clear to eos 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB ESC,2AH,0,0,0 ;ESC "*" - clear and home cursor1A1H RET ; 1A6H ; ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for IMS 5000 with 440 I/O' 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 'Hello from an IMS 5000 user',CR,LF,0 ;..... ; ; ; This routine sends a 300 ms. break tone to reset some time-share ; computers. ; SENDBRK: RET ;..... ; ; ; This routine sends a 300 ms. break tgone and set DTR low for the same ; length of time to disconnect some modems such as the Bell 212A, etc. ; GOODBYE: RET ; ;..... ; ; ; The following is used to initialize UART 1 on the IMS 440 board ; INITMOD: MVI A,1 ;default transfer speed to 300 baud STA MSPEED DI ;turn off interrupts for init. MVI A,76H ;select UART1 counter OUT 17H ; LSPSPD: MVI A,00H ;default 'LSP' speed for 300 baud OUT BAUDRP ;load into counter divisor register ; MSPSPD: MVI A,01H ;default 'MSP' speed for 300 baud OUT BAUDRP ;load into counter divisor register ; MVI A,19H ;8-level, 1 stop bit, no parity OUT MODCTL1 ;load into UART control register EI ;restore interrupts to normal RET ;..... ; ; ; The following routine changes the baud rate for the IMS 440 with the SET ; command. ; SETUPR: LXI D,BAUDBUF ;point to input buffer for INLNCOMP CALL JMP$ILPRT DB 'Input Baud Rate (300, 450, 600, 1200, 9600): ',0 CALL JMP$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 '450',0 JNC OK450 CALL JMP$INLNCOMP DB '600',0 JNC OK600 CALL JMP$INLNCOMP DB '1200',0 JNC OK1200 CALL JMP$INLNCOMP DB '9600',0 JNC OK9600 CALL JMP$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 LHLD BD300 ;get 300 baud parameters in HL JMP LOADBD ;go load them ; OK450: MVI A,2 LHLD BD450 JMP LOADBD OK600: MVI A,3 LHLD BD600 JMP LOADBD ; OK1200: MVI A,5 LHLD BD1200 JMP LOADBD ; OK9600: MVI A,8 LHLD BD9600 ; LOADBD: STA INITMOD+1 ;store speed to show transfer time MOV A,L ;get least significant baud rate byte STA LSPSPD+1 ;store in INITMOD MOV A,H ;get most signifcant baud rate byte STA MSPSPD+1 ;store in INITMOD JMP INITMOD ;reset H89 8250 ; ; ; Table of baud rate parameters ; BD300: DW 256 BD450: DW 171 BD600: DW 128 BD1200: DW 64 BD9600: DW 8 ; BAUDBUF: DB 10,0 DS 10 ; ;----------------------------------------------------------------------- ; ; This routine can be used for your equipment, be sure to end with RET ; 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 ;