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Assembly Source File | 1994-07-13 | 12.4 KB | 386 lines

; M7MFIO-2.ASM For Electralogics Inc. MFIO. 04/30/84 ; ; 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 Electralogics MFIO ; board with 8250 serial I/O. Much of the information contained here is ; not in the main file. ; ; Set serial port desired at 'sio' equate ; ; 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 MDM7xx.COM ; DDT VERS 2.2 ; NEXT PC ; 4x00 0100 ; -IM7MFIO-2.HEX (note the "I" command) ; -R ("R" loads in the .HEX file) ; NEXT PC ; 4x00 0000 ; -G0 (return to CP/M) ; A>SAVE 73 MDM7xx.COM (now have a modified .COM file) ; ^ ; May vary depending upon version of MDM7xx ; ;---------------------------------------------------------------------------- ; NOTE: ; ; The MFIO is a very complex I/O board containing 8 serial ports, 2 parallel ; ports, a real time clock, and vectored interrupt controller. All of the ; above facilities can be accessed by the use of only 9 I/O port addresses. ; This requires that the active I/O block number be stored somewhere in memory ; so that when the current I/O operation is completed, the MFIO can be ; restored to its previous I/O block (normally the system console). I have ; selected location 0000FH for the purpose and called it 'BLKSTAT'. ; Any other unused memory location is equally suitable. ; ; If this procedure is adopted in all BIOS I/O routines, all that needs ; to be done in any other I/O routine is to select the current I/O block, ; set up the MFIO command port for that block and store that value at ; location 'BLKSTAT'. Following is my CONIN routine as an example: ; ; CONIN: mvi a,sio0 ; set sio0 for console I/O ; out cmdport ; and tell MFIO ; in linstat ; read the line status register ; ani ckrb ; & mask console kb rdy bit ; jz conin ; loop till ready ; in keydat ; read sio0 data register ; ani 7fh ; strip the parity bit ; push psw ; save the byte ; lda blkstat ; & get the previous I/O block ; out cmdport ; restore MFIO to prev block ; pop psw ; get the keyboard data byte ; ret ; and bail out ; ; The routine "mxdin" located near the end of this program is called from ; all routines which use BIOS I/O calls that utilize MFIO resources (in my ; system, ALL I/O except the disks is MFIO-oriented). Its only purpose is ; to ensure that the system keep track of the MFIO resource blocks. If you ; get really complicated (interrupts, for example) you may need to push ; and pop them using a 'stack'. ; 'nuff said. Luck!! ; ; - Bill Harnell ; = = = = = = = = = = = = = = = = = = ; ; 04/30/84 - Renamed and Revised for MDM7xx - Dennis Recla ; ; 08/14/83 - Revised to work with MFIO. - Vic Kass ; CONIN and CONOUT routines ; in your BIOS must reset ; modem port after any access! ; ; ; = = = = = = = = = = = = = = = = = ; 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. ; sio: equ 02H blkstat: equ 0000fh ;location to store current I/O block cmdport: equ 48H ; MODDATP: EQU 40H ;data port for MFIO MODCTL1: EQU MODDATP+5 ;status port for MFIO MODRCVB: EQU 1 ;bit to test for received data MODRCVR: EQU 1 ;modem receive ready MODSNDB: EQU 20H ;bit to test for ready to send MODSNDR: EQU 20H ;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=Smartmodem 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 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 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 ms. break tone 120H NOCONNCT: DB 'N'-40H ;^N = Disconnect from the 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$MODCTL1: call mxdin ;set & store current I/O block IN MODCTL1 ! RET ;in modem control port 12AH DS 4 OUT$MODDATP: call mxdin OUT MODDATP ! RET ;out modem data port 134H DS 4 IN$MODDATP: call mxdin IN MODDATP ! RET ;in modem data port 13EH DS 4 ANI$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$TIMER DS 3 ; 192H ; ; ; Set the following clear screen codes for your terminal type ; CLREOS: CALL JMP$ILPRT ; 195H DB ESC,'Y',0,0,0 ; 198H RET ; 19DH ; CLRSCRN: CALL JMP$ILPRT ; 19EH DB ESC,'+',0,0,0 ; 1A1H RET ; 1A6H ; ; SYSVER: CALL JMP$ILPRT ; 1A7H DB 'Version for Electralogics Incorporated MFIO' 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...... >> Bill Harnell<< here....',CR,LF,0 ;..... ; ; ; This routine sends a 300 ms. break tone to reset some time-share ; computers. ; SENDBRK: call mxdin ;set & store current I/O block MVI A,40H ;SET BREAK TONE OUT MODDATP+3 JMP GOODBYE1 ;SEND A 300 MS. BREAK TONE ;..... ; ; ; 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: call mxdin XRA A OUT MODDATP+4 ;SET DTR AND RTS LOW MVI A,40H ;SET BREAK TONE OUT MODDATP+3 ; GOODBYE1: MVI B,3 ;WAIT 300 MS. CALL JMP$TIMER MVI A,03H ;RESET TO NORMAL 8 BITS OUT MODDATP+3 MVI A,01H OUT MODDATP+4 ;RESET DTR HIGH RET ;..... ; ; ; The following is used to initialize the MFIO 8250 I/O port 'SIO' ; INITMOD: MVI A,1 ;default transfer speed to 300 baud call mxdin STA MSPEED DI ;turn off interrupts for init. XRA A OUT MODDATP+1 ;interrupt enable register MVI A,80H ;insure out of mode to set baud rate OUT MODDATP+3 ;line control register OUT MODDATP+3 ; LSPSPD: MVI A,80H ;default 'LSP' speed for 300 baud OUT MODDATP ;register for 'LSP' speed if enabled ; MSPSPD: MVI A,01H ;default 'MSP' speed for 300 baud OUT MODDATP+1 ;register for 'MSP' speed if enabled ; MVI A,03H ;8-level, 1 stop bit, no parity OUT MODDATP+3 ;line control register MVI A,01H ;set 'DTR' for proper modem output level OUT MODDATP+4 ;modem control register EI ;restore interrupts to normal RET ;..... ; ; ; The following routine changes the baud rate for the MFIO with the SET ; command. ; SETUPR: call mxdin LXI D,BAUDBUF ;point to input buffer for INLNCOMP CALL JMP$ILPRT DB 'Input Baud Rate (300, 1200, etc.): ',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 MFIO 8250 ; ; ; Table of baud rate parameters ; BD300: DW 0180H BD450: DW 0100H BD600: DW 00C0H BD1200: DW 0060H BD9600: DW 000CH ; 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 ; ;----------------------------------------------------------------------- ; mxdin: push psw mvi a,sio out cmdport sta blkstat ;store current I/O block pop psw ret ; ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem) ; 0C00H (without Smartmodem) ; END ;