CP/M

home *** CD-ROM | disk | FTP | other *** search

/ CP/M / CPM_CDROM.iso / simtel / cpmug / cpmug041.ark / RTTY.ASM < prev next >

Wrap

Assembly Source File | 1984-04-29 | 25.2 KB | 929 lines

; ;=========================================== ; ; ASCII TO BAUDOT TO ASCII PROGRAM ; WITH BUFFER TO DISK AND DISK TO BUFFER ; ROUTINES TAKEN FROM 'LINK.ASM' BY L.E.HUGHS ; ; RANDY SUESS 12/20/78 ;============================================ ; ;08/12/79 MODIFICATIONS BY JIM MILLS WB9KFP TO ALLOW ;OPERATION USING PMMI MM-103 DIRECT-CONNECT MODEM ; ; ; CTRL-R SEND TEXT FILE FROM DISK TO CYBER ; CTRL-Y ENABLE TEXT-FILE-LOADER (INTO MEMORY) ; CTRL-Q DISABLE TEXT FILE LOADER, WRITE MEMORY TO DISK ; BDOS ENTRY POINT AND FUNCTION CODES BDOS EQU 0005H OFFC EQU 15 ;OPEN FILE CFFC EQU 16 ;CLOSE FILE DFFC EQU 19 ;DELETE FILE RRFC EQU 20 ;READ RECORD WRFC EQU 21 ;WRITE RECORD MFFC EQU 22 ;MAKE FILE ; DEFAULT FCB AND FIELD DEFINITIONS FCB EQU 5CH FN EQU 1 ;FILE NAME FIELD (REL) FT EQU 9 ;FILE TYPE FIELD (REL) NR EQU 32 ;NEXT RECORD FIELD (REL) DBUF EQU 80H ;DEFAULT DISK BUFFER ADDRESS ; ASCII CONTROL CHARACTERS BEL EQU 007Q ;BELL LF EQU 012Q ;LINE FEED CR EQU 015Q ;CARRIAGE RETURN DEL EQU 177Q ;DELETE ; I/O PORT ADDRESSES COND EQU 005Q ;CONSOLE DATA PORT COND1 EQU 07H ;SECOND CONSOLE CONS EQU 004Q ;CONSOLE STATUS PORT CONS1 EQU 06H ;2ND CONSOLE MODD EQU FF01H ;MODEM DATA PORT MODS EQU FF00H ;MODEM STATUS PORT ; PMMI PORT ADDRESSES PMMI EQU FF00H ;PMMI BASE ADDRESS PMMIUS EQU PMMI ;PMMI UART STATUS PMMIRD EQU PMMI+1 ;PMMI RCV DATA PMMIMS EQU PMMI+2 ;PMMI MODEM STATUS PMMIIM EQU PMMI+3 ;PMMI INPUT MASK PMMICON EQU PMMI ;PMMI UART/MODEM CONTROL PMMIXD EQU PMMI+1 ;PMMI XMIT DATA PMMIT EQU PMMI+2 ;PMMI TIMER PMMIOM EQU PMMI+3 ;PMMI OUTPUT MASK PMMIMC EQU PMMI+4 ;PMMI MODEM CONTROL ; I/O SYMBOL DEFINITIONS CTBE EQU 02H ;CONSOLE TRANSMIT BUFFER EMPTY CRDA EQU 01H ;CONSOLE READ DATA AVAILABLE MTBE EQU 080H ;RTTY TRANSMIT BUFFER EMPTY MRDA EQU 01H ;RTTY READ DATA AVAILABLE ; MAIN PROGRAM ORG 100H LINK: LXI H,0 ;SAVE OLD STACK POINTER DAD SP SHLD OLDSP LXI SP,STACK+64 ;CREATE LOCAL STACK LINK2: XRA A ;CLEAR CHAR BUFFERS STA INCH STA OUTCH STA FLAG ;CLEAR TEXT SAVE FLAG LXI H,TBUF ;SET PTR TO TBUF SHLD PTR LXI H,0 ;SIZE = 0 SHLD SIZE CALL WCCR ;WRITE CR/LF TO CONSOLE MVI A,BEL ;RING BELL ON CONSOLE, TO LET CALL WCC ; CLONE KNOW WE'RE READY ; MAIN LOOP LINK3: IN CONS ;JUMP IF NO DATA FROM CONSOLE ANI CRDA JZ LINK44 IN COND ;ELSE READ CONSOLE DATA OUT COND ;ECHO TO TERMINAL ANI 177Q ;CALL PCC IF CONTROL CHAR CPI 40Q CC PCC JC LINK4 ;JUMP IF PCC HANDLED CHAR ORI 200Q ;ELSE SET VALID DATA BIT STA INCH ;AND STORE IN INPUT CHAR BUFFER LINK44: IN CONS1 ANI CRDA JZ LINK4 IN COND1 OUT COND1 ANI 07FH CPI 40Q CC PCC JC LINK4 ORI 200Q STA INCH LINK4: IN CONS1 ;JUMP IF CONSOLE XMIT BUFFER BUSY ANI CTBE JZ LINK5 LDA OUTCH ;JUMP IF NO DATA FOR CONSOLE ORA A JP LINK5 ANI 177Q ;ELSE DISCARD VALID DATA BIT OUT COND ; AND OUTPUT CHAR TO CONSOLE OUT COND1 XRA A ; THEN CLEAR OUTPUT CHAR BUFFER STA OUTCH LINK5: IN MODS ;JUMP IF NO DATA FROM RTTY ANI MRDA JNZ LINK6 TTYREAD: ; **** CALL ; ****RTTY READ ROUTINE CALL RMC CALL SAVE ;SAVE CHAR IN TEXT BUFFER IF FLAG ON ORI 200Q ;SET DATA VALID BIT STA OUTCH ;STORE IN OUTPUT CHAR BUFFER LINK6: IN MODS ;JUMP IF RTTY XMIT BUFFER BUSY ANI MTBE JNZ LINK7 LDA INCH ;JUMP IF NO DATA FOR RTTY ORA A JP LINK7 ANI 177Q ;ELSE DISCARD VALID DATA BIT ; ********* CALL RTTY OUT ROUTINE ;****** ADDED CODE TO SEND 2 CR'S AND 1 LF ; FOR EACH CR CPI CR JNZ LNKX MVI A,CR CALL WMC MVI A,LF OUT 1 ;ECHO LF TO CONSOLE CALL WMC LNKX: CALL WMC XRA A ; THEN CLEAR INPUT CHAR BUFFER STA INCH LINK7: JMP LINK3 ;END OF MAIN LOOP LINKX: LHLD OLDSP SPHL XRA A OUT 202Q RET ; PCC - PROCESS CONTROL CHARACTER PCC: CPI 'D'-100Q ;JUMP IF NOT CONTROL-D JNZ PCC1 LHLD OLDSP ;ELSE CLEAN UP ACT AND GO HOME SPHL RET PCC1: CPI 'O'-100Q ;JUMP IF NOT CONTROL-Q JNZ PCC2 CALL STF ;SEND TEXT FILE TO RTTY STC ;TELL LINK TO IGNORE THIS CHARACTER RET PCC2: CPI 'Y'-100Q ;JUMP IF NOT CONTROL-Y JNZ PCC3 MVI A,1 ;TURN ON TEXT SAVE FLAG STA FLAG STC RET PCC3: CPI 'Q'-100Q ;JUMP IF NOT CONTROL-Q JNZ PCC4 XRA A ;TURN OFF TEXT SAVE FLAG STA FLAG CALL WTB ;WRITE TEXT BUFFER TO DISK LXI H,TBUF ;CLEAR TEXT BUFFER SHLD PTR LXI H,0 SHLD SIZE STC RET PCC4: STC ;LET LINK HANDLE ALL OTHER CONTROL CODES CMC RET ; STF - SEND TEXT FILE (TO RTTY) STF: CALL GFN ;GET NAME OF DISK FILE TO SEND JC STF6 ;JUMP IF FILE NAME ERROR CALL OPEN ;TRY TO OPEN SPECIFIED FILE CPI 255 ;JUMP IF FILE NOT FOUND JZ STF7 XRA A ;ELSE REWIND FILE AND GET ON WITH IT STA FCB+NR STF1: CALL READ ;READ NEXT RECORD INTO DBUF CPI 1 ;JUMP IF END-OF-FILE JZ STF5 LXI H,DBUF ;POINT TO DISK BUFFER MVI C,128 STF2: MOV A,M ;FETCH NEXT CHAR FROM DBUF INX H CPI 'Z'-100Q ;JUMP IF END-OF-FILE CHARACTER JZ STF5 CALL WMC ;WRITE CHARACTER TO RTTY CALL WCC ;WRITE CHARACTER TO CONSOLE IN 01 ;CHECK FOR CTRL D ABORT ANI 7FH CPI 04H JZ STF5 STF4: DCR C ;LOOP THRU REST OF DBUF JNZ STF2 JMP STF1 ;GO GET NEXT RECORD FROM DISK STF5: CALL CLOSE ;CLEAN UP ACT AND GO HOME MVI A,BEL ;RING BELL TO LET CLONE CALL WCC ; KNOW WE'RE THROUGH RET STF6: LXI H,STFS1 ;PRINT 'FILE NAME ERROR' CALL WCS RET STF7: LXI H,STFS2 ;PRINT 'FILE NOT FOUND' CALL WCS RET STFS1: DB 'FILE NAME ERROR',CR,LF,0 STFS2: DB 'FILE NOT FOUND',CR,LF,0 ; SAVE - SAVE CHAR IN TEXT BUFFER IF FLAG ON ; ; ENTRY CONDITIONS ; A - CHARACTER TO SAVE SAVE: PUSH PSW LDA FLAG ORA A JNZ SAVE1 POP PSW RET SAVE1: POP PSW PUSH H LHLD PTR ANI 7FH ;DISCARD PARITY BIT JZ SAVE2 ;JUMP IF CHAR IS A NULL MOV M,A INX H SAVE2: CMA ;DISPLAY CHAR ON LIGHTS OUT 0FFH CMA SHLD PTR LHLD SIZE ;SIZE = SIZE + 1 INX H SHLD SIZE POP H RET ; WTB - WRITE TEXT BUFFER TO DISK WTB: LHLD SIZE ;JUMP IF TEXT BUFFER EMPTY MOV A,L ORA H JZ WTB5 CALL GFN ;GET FILE NAME JC WTB6 ;JUMP IF FILE NAME ERROR CALL DELT ;DELETE OLD FILE, IF ANY CALL MAKE ;MAKE NEW FILE XRA A ;REWIND FILE STA FCB+NR LHLD SIZE ;DE = TBUF SIZE XCHG LXI H,DBUF ;TOP OF STACK POINTS TO DBUF PUSH H LXI H,TBUF ;HL POINTS TO TBUF WTB1: MVI C,128 ;DISK BUFFER SIZE WTB2: MOV A,M ;FETCH NEXT BYTE OF TBUF INX H XTHL MOV M,A ;STORE IN DBUF INX H XTHL DCX D ;SIZE = SIZE - 1 MOV A,D ;EXIT LOOP IF SIZE = 0 ORA E JZ WTB3 DCR C ;LOOP UNTIL DBUF FULL JNZ WTB2 CALL WRITE ;WRITE FULL DBUF TO DISK XTHL ;TOP OF STACK POINTS TO DBUF LXI H,DBUF XTHL JMP WTB1 ;LOOP UNTIL END OF TBUF WTB3: POP H ;HL POINTS TO CURRENT PLACE IN DBUF WTB4: MVI M,'Z'-100Q ;STORE EOF CODE INX H DCR C ;LOOP THRU REST OF DBUF JNZ WTB4 CALL WRITE ;WRITE LAST SECTOR TO DISK CALL CLOSE ;CLEAN UP ACT AND GO HOME MVI A,BEL ;RING BELL TO LET CLONE CALL WCC ; KNOW WE'RE THROUGH RET WTB5: LXI H,WTBS1 ;PRINT 'TEXT BUFFER EMPTY' CALL WCS RET WTB6: LXI H,WTBS2 ;PRINT 'FILE NAME ERROR' CALL WCS RET WTBS1: DB 'TEXT BUFFER EMPTY',CR,LF,0 WTBS2: DB 'FILE NAME ERROR',CR,LF,0 ; WCS - WRITE CONSOLE STRING ; ; ENTRY CONDITIONS ; HL - POINTS TO STRING (TERM BY ZERO BYTE) WCS: MOV A,M INX H ORA A RZ CALL WCC JMP WCS ; WCCR - WRITE CONSOLE CARRIAGE RETURN (AND LINE FEED) WCCR: MVI A,CR CALL WCC MVI A,LF ; WCC - WRITE CONSOLE CHARACTER ; ; ENTRY CONDITIONS: ; A - CHARACTER TO WRITE WCC: PUSH PSW IN CONS ANI CTBE JZ $-4 POP PSW OUT COND PUSH PSW IN CONS1 ANI CTBE JZ $-4 POP PSW OUT COND1 RET ; RCS - READ CONSOLE STRING (WITH ECHO) ; ; EXIT CONDITIONS ; B - NUMBER OF CHARACTERS READ (<255) ; HL - POINTS TO LAST CHAR STORED (CR) RCS: LXI H,IBUF MVI B,0 RCS1: CALL RCC ;READ NEXT CHAR FROM CONSOLE CPI DEL ;JUMP IF NOT DEL JNZ RCS2 INR B ;IGNORE DEL IF IBUF ALREADY EMPTY DCR B JZ RCS1 DCX H ;ELSE DISCARD LAST CHAR MOV A,M ;ECHO DISCARDED CHAR TO CONSOLE CALL WCC DCR B ;DECREMENT COUNT JMP RCS1 ; AND LOOP RCS2: CPI 'U'-100Q ;JUMP IF NOT CONTROL-U JNZ RCS3 CALL WCCR ;ELSE ABORT CURRENT LINE JMP RCS ; AND START OVER RCS3: CALL WCC ;ECHO CHAR TO CONSOLE MOV M,A ;STORE CHAR IN IBUF INR B ;INCREMENT COUNT CPI CR ;JUMP IF CARRIAGE RETURN JZ RCS4 INX H ;ELSE ADVANCE POINTER JMP RCS1 ; AND LOOP RCS4: MVI A,LF ;ISSUE LINE FEED AND RETURN CALL WCC RET ; RCC - READ CONSOLE CHARACTER ; ; EXIT CONDITIONS ; A - CHARACTER READ RCC: IN CONS ANI CRDA JZ RCCC IN COND ANI 177Q RET RCCC: IN CONS1 ANI CRDA JZ RCC IN COND1 ANI 177Q RET ; WMC - WRITE RTTY CHARACTER ; ; ENTRY CONDITIONS ; A - CHARACTER TO WRITE WMC: ; CALL RTTYOUT ;*************************** CALL RTTYXMIT PUSH PSW ;GONNA PRINT IT? IN 0FFH ANI 80H JNZ DIABLO POP PSW RET ; ; RMC - READ RTTY CHARACTER ; ; EXIT CONDITIONS: ; A - CHARACTER READ RMC: ; CALL RMC ;******************** CALL RTTYREAD PUSH PSW ; ********* OUT TO PRINTER ALSO IF 80H UP IN 0FFH ANI 80H JNZ DIABLO POP PSW RET DIABLO: POP PSW PUSH PSW PUSH B PUSH D PUSH H MOV E,A MVI C,5 CALL BDOS POP H POP D POP B POP PSW RET ; ; ASCRCV(4), VER. 2 ; BY KEITH PETERSEN, W8SDZ. 10/30/78. ; ; THIS IS A PROGRAM TO CHANGE ; ASCII-CODED-BAUDOT TO ASCII. ; THE ROUTINE RETURNS WITH A 0FFH ; IN THE 'A' REGISTER IF CHARACTER ; IS TO BE IGNORED. OTHERWISE IT ; RETURNS WITH THE ASCII CHARACTER ; IN THE 'A' REGISTER. IT IS ASSUMED ; THAT A STATUS TEST HAS BEEN DONE BEFORE ; CALLING THIS ROUTINE TO DETERMINE THAT ; A BAUDOT CHARACTER IS AVAILABLE. ; ; EQUATES ; BTTY: EQU 05H ;BAUDOT UART DATA PORT BELL: EQU 07H ;ASCII BELL LTRS: EQU 1FH ;BAUDOT 'LTRS' SPACE: EQU 04H ;BAUDOT 'SPACE' FIGS: EQU 1BH ;BAUDOT 'FIGS' APOS: EQU 27H ;APOSTROPHE CNTC: EQU 03H ;CONTROL C LARW: EQU 5FH ;LEFT ARROW ASPC: EQU 20H ;ASCII SPACE ATSN: EQU 40H ;"AT" SIGN CNTV: EQU 16H ;CONTROL V CNTO: EQU 0FH ;CONTROL O RUBT: EQU 7FH ;RUBOUT CNTE: EQU 05H ;CONTROL E PCT: EQU 25H ;PERCENT SIGN EQL: EQU 3DH ;EQUALS SIGN GRTH: EQU 3EH ;GREATER-THAN SIGN CNTH: EQU 08H ;CONTROL H LETH: EQU 3CH ;LESS-THAN SIGN CNTB: EQU 02H ;CONTROL B STAR: EQU 2AH ;ASTERISK CNTI: EQU 09H ;CONTROL I CNTZ: EQU 1AH ;CONTROL Z CNTA: EQU 01H ;CONTROL A CNTX: EQU 18H ;CONTROL X UARW: EQU 5EH ;UP-ARROW PLUS: EQU 2BH ;PLUS SIGN RESL: EQU 5CH ;REVERSE SLANT LBKT: EQU 5BH ;LEFT BRACKET RBKT: EQU 5DH ;RIGHT BRACKET ESCP: EQU 1BH ;ESCAPE KEY ALMD: EQU 7DH ;ALTERNATE MODE KEY ; ; PROGRAM STARTS HERE ; RTTYREAD: ; ASCRCV: PUSH H ;SAVE HL REGISTERS LHLD CASAVE ;GET PRESENT CASE ; START: IN BTTY ;GET BAUDOT CHARACTER ANI 1FH ;BAUDOT CHARACTERS ONLY CPI FIGS JZ UCASE CPI LTRS JZ LCASE ORA A ;BAUDOT 'BLANK' ? JZ TCASE CPI SPACE JNZ START1 LXI H,LTABLE ;SPACE GIVES LOWER CASE ; START1: SHLD CASAVE ;SAVE PRESENT CASE ADD L ;ADD CHAR. TO TABLE ADRS. MOV L,A ;L POINTS TO ASCII CHAR. MOV A,H ;GET H FOR CORRECTION ACI 0 ;SEE IF CORRECTION NEEDED MOV H,A ;H IS CORRECT NOW XRA A ;PUT ZERO IN A REG. STA FLAGR ;CLEAR LTRS-FIGS LAST FLAG MOV A,M ;GET ASCII EQUIVALENT POP H ;RESTORE HL REGISTERS ORA A ;IS IT PRINTABLE? RNZ ;YES, VALID CHAR. RETURN CMA ;MAKE 0FFH 'IGNORE FLAG' RET ;RETURN TO CALLING PROGRAM ; LCASE: LXI H,LTABLE ;LOWER CASE TABLE ADDRESS JMP SETFLG ;SET LTRS LAST FLAG, EXIT ; UCASE: LXI H,UTABLE ;UPPER CASE TABLE ADDRESS JMP SETFLG ;SET FIGS LAST FLAG, EXIT ; TCASE: LDA FLAGR ;GET SHIFT REMINDER FLAG CPI FIGS JNZ FCASE LXI H,TTABLE ;THIRD CASE TABLE ADDRESS JMP CLRFLG ; FCASE: CPI LTRS ;CHECK FOR LTRS LAST JNZ CLRFLG LXI H,FTABLE ;FOURTH CASE TABLE ADDRESS ; CLRFLG: XRA A ;READY TO CLEAR FLAG ; SETFLG: STA FLAGR ;LTRS-FIGS LAST FLAG SHLD CASAVE ;SAVE PRESENT CASE MVI A,0FFH ;'IGNORE FLAG' POP H ;RESTORE HL REGS. RET ;RETURN TO CALLING PROGRAM ; ; THIS IS THE LOWER-CASE TABLE. ; LTABLE: DB 0,'E',LF,'A SIU',CR,'DRJNFCK' DB 'TZLWHYPQOBG',FIGS,'MXV' ; ; THIS IS THE UPPER-CASE TABLE. ; UTABLE: DB 0,'3',LF,'- ',BELL,'87',CR,'$4' DB APOS,',!:(5")2#6019?&',FIGS,'./;' ; ; THIS IS THE THIRD-CASE TABLE. ; IT IS USED FOR SPECIAL CHARACTERS. ; THE FIRST COLUMN IN THE TABLE ; THE ASCII CHARACTER EQUIVALENT. ; THE SECOND COLUMN IS THE SPECIAL ; CASE BAUDOT CHARACTER FROM WHICH ; THE CONVERSION IS MADE. ; TTABLE: DB 0,CNTC,LF ;BL 3 LF DB LARW,ASPC,ATSN ;- SP BELL DB CNTV,CNTO,CR ;8 7 CR DB ALMD,CNTE,PCT ;$ 4 ' DB RUBT,EQL,ESCP ;, ! : DB LETH,CNTH,LBKT ;( 5 " DB GRTH,CNTB,STAR ;) 2 # DB CNTI,CNTZ,CNTA ;6 0 1 DB CNTX,UARW,PLUS ;9 ? & DB 0,RBKT,RESL ;FIG . / DB 0 ;; ; ; THIS IS THE FOURTH CASE TABLE ; FOR LOWER-CASE ALPHA CHARACTERS. ; FTABLE: DB 0,65H,LF,61H,ASPC,73H DB 69H,75H,CR,64H,72H,6AH DB 6EH,66H,63H,6BH,74H,7AH DB 6CH,77H,68H,79H,70H,71H DB 6FH,62H,67H,FIGS,6DH,78H DB 76H ; ; TEMPORARY STORAGE AREA ; CASAVE: DW LTABLE ;PRESENT CASE REMINDER FLAGR: DB 0 ;FIGS/LTRS LAST FLAG ; ; ; ASCXMT(4) REV. 2 ; BY KEITH PETERSEN, W8SDZ. 10/29/78. ; ; THIS PROGRAM IS FOR TRANSMITTING ASCII ; THROUGH A BAUDOT MEDIUM USE A SPECIAL ; FORMAT OF FIGURES BLANK (X) - WHERE (X) ; IS A SPECIAL BAUDOT CHARACTER USED TO ; CONVEY THE ASCII EQUIVALENT CHARACTER TO THE ; RECEIVING END WHERE IT IS THEN CONVERTED BACK ; TO ASCII AGAIN. LOWER CASE ALPHA CHARACTERS ; ARE TRANSMITTED VIA A 4TH CASE, LTRS BLANK (X). ; ; EQUATES ; LTRSX: EQU 1FH FIGSX: EQU 1BH CRX: EQU 48H LFX: EQU 42H STATUS: EQU 04H ;BAUDOT UART STATUS PORT TBE: EQU 80H ;UART TRANS. BUF. EMPTY FLAG BTTY: EQU 05H ;BAUDOT UART DATA PORT ALTMOD: EQU 7DH ;ALTERNATE MODE KEY ; ; PROGRAM STARTS HERE. ; CALL WITH ASCII CHARACTER IN ACCUMULATOR. ; ; RTTYXMIT: STARTX: PUSH PSW ;SAVE REGISTERS USED PUSH B PUSH H ; BAUDOT: MVI C,0 ;SET UP COUNTER ANI 7FH ;STRIP PARITY BIT CPI ALTMOD ;ALTERNATE MODE KEY? JNZ BAUD2 ;NO, IGNORE NEXT ROUTINE MVI A,09H ;BAUDOT '$' JMP BAUD3 ; BAUD2: CPI 7BH ;ABOVE L.C. 'Z' ? JNC TTY0 ;IF SO, IGNORE IT LXI H,BTABLE ;POINT TO TABLE START ADD L ;ADD CHARACTER VALUE MOV L,A ;L POINTS TO BAUDOT CHAR. MOV A,H ;GET H FOR CORRECTION ACI 0 ;CORRECT IF NECESSARY MOV H,A ;H IS NOW CORRECT MOV A,M ;GET BAUDOT CHARACTER ORA A ;IS IT A NON-PRINTING CHAR? JZ TTY0 ;IF SO IGNORE IT CPI CRX ;IS IT A CARRIAGE RETURN? JZ TTYOUT-1 ;YES, HANDLE WITHOUT CASE TEST CPI LFX ;IS IT A LINE FEED? JNZ BAUD3 ;NO, IGNORE NEXT ROUTINE MVI A,LTRSX PUSH PSW ;SAVE IT ON STACK MVI A,LFX LXI H,SCASE ;POINT TO PRESENT CASE REG. MVI M,40H ;SET IT TO LOWER CASE JMP TTYOUT-2 ;SEND LF AND LTRS ; BAUD3: PUSH PSW ;SAVE CHARACTER ANI 0C0H ;STRIP ALL BUT CASE BITS LXI H,SCASE ;POINT TO PRESENT CASE REG. CMP M ;SAME CASE AS PREVIOUS CHARACTER? JZ TTYOUT ;YES NO CHANGE NECESSARY MOV M,A ;UPDATE CASE REGISTER ORA A JZ TCASEX CPI 80H JZ UCASEX CPI 0C0H JNZ LCASSEX ; FCASEX: XRA A ;GET A BAUDOT 'BLANK' PUSH PSW ;SAVE IT ON THE STACK INR C ;INCREMENT CHARACTER COUNT ; LCASSEX: MVI A,LTRSX JMP TTYOUT-2 ; TCASEX: XRA A ;GET A BAUDOT 'BLANK' PUSH PSW ;SAVE IT ON THE STACK INR C ;INCREMENT CHARACTER COUNT ; UCASEX: MVI A,FIGSX INR C ;INCREMENT CHARACTER COUNT PUSH PSW ;SAVE IT ON THE STACK ; TTYOUT: IN STATUS ;BAUDOT UART STATUS ANI TBE ;TRANS. BUFFER EMPTY? JNZ TTYOUT ;IF NOT, LOOP AND WAIT POP PSW ;GET CHARACTER ; ; OMIT NSEXT THREE LINES IF NO LIGHTS. ; CMA ;INVERT FOR LIGHTS OUT 0FFH ;PUT ON FRONT PANEL LIGHTS CMA ;INVERT BACK TO NORMAL ; ; OMIT ABOVE THREE LINES IF NO LIGHTS. ; ORI 0E0H ;MAKE UPPER 3 BITS MARKING OUT BTTY ;SEND TO BAUDOT UART PORT DCR C ;MORE TO SEND? JP TTYOUT ;YES, CONTINUE SENDING ; TTY0: POP H ;RESTORE REGISTERS POP B POP PSW RET ;RETURN TO CALLING PROGRAM ; BTABLE: DB 5FH,17H,13H ;NUL SOH STX DB 1,0,0AH ;ETX EOT ENQ DB 0,85H,10H ;ACK BEL BS DB 15H,42H,0C2H ;HT LF VT DB 2,48H,0 ;FF CR SO DB 7,0,0 ;SI DLE DC1 DB 0,0,0 ;DC2 DC3 DC4 DB 0,6,0 ;NAK SYN ETB DB 18H,0,16H ;CAN EM SUB DB 0EH,0,0 ;ESC FS GS DB 0,0,44H ;RS US SPACE DB 8DH,91H,94H ;! " # DB 89H,0BH,9AH ;$ PCT & DB 8BH,8FH,92H ;' ( ) DB 14H,1AH,8CH ;AS PL , DB 83H,9CH,9DH ;- . / DB 96H,97H,93H ;0 1 2 DB 81H,8AH,90H ;3 4 5 DB 95H,87H,86H ;6 7 8 DB 98H,8EH,9EH ;9 : ; DB 0FH,0DH,12H ;LT EQ GT DB 99H,5,43H ;? AT A DB 59H,4EH,49H ;B C D DB 41H,4DH,5AH ;E F G DB 54H,46H,4BH ;H I J DB 4FH,52H,5CH ;K L M DB 4CH,58H,56H ;N O P DB 57H,4AH,45H ;Q R S DB 50H,47H,5EH ;T U V DB 53H,5DH,55H ;W X Y DB 51H,11H,1DH ;Z LB LS DB 1CH,19H,3 ;RB UA LA ; ; THESE ARE THE LOWER CASE ALPHA CHARACTERS ; DB 0,0C3H,0D9H ;' A B DB 0CEH,0C9H,0C1H ;C D E DB 0CDH,0DAH,0D4H ;F G H DB 0C6H,0CBH,0CFH ;I J K DB 0D2H,0DCH,0CCH ;L M N DB 0D8H,0D6H,0D7H ;O P Q DB 0CAH,0C5H,0D0H ;R S T DB 0C7H,0DEH,0D3H ;U V W DB 0DDH,0D5H,0D1H ;X Y Z ; ; TEMPORARY STORAGE AREA ; SCASE: DB 40H ;PRESENT CASE REGISTER ; GFN: CALL WCCR LXI H,GFNS1 ;PRINT 'FILENAME? ' CALL WCS CALL RCS ;READ RESPONSE INTO IBUF LXI H,FCB+FN ;BLANK FILL FN AND FT FIELDS MVI C,11 GFN1: MVI M,' ' INX H DCR C JNZ GFN1 LXI H,IBUF ;POINT TO INPUT BUFFER LXI D,FCB+FN ;SCAN OFF FN FIELD MVI C,9 GFN2: MOV A,M ;FETCH NSEXT CHAR FROM IBUF INX H CPI 141Q ;IF LC, CONVERT TO UC JC $+5 SUI 40Q CPI CR ;JUMP IF END OF LINE JZ GFN5 CPI '.' ;JUMP IF END OF NAME JZ GFN3 STAX D ;ELSE STORE CHAR IN FN FIELD INX D DCR C ;LOOP IF 8 OR LESS CHARS SO FAR JNZ GFN2 JMP GFN6 ;ELSE TAKE ERROR SEXIT GFN3: LXI D,FCB+FT ;SCAN OFF FT FIELD MVI C,4 GFN4: MOV A,M ;FETCH NSEXT CHAR FROM IBUF INX H CPI 141Q ;IF LC, CONVERT TO UC JC $+5 SUI 40Q CPI CR ;JUMP IF END OF LINE JZ GFN5 STAX D ;ELSE STORE CHAR IN FT FIELD INX D DCR C ;LOOP IF 3 OR LESS CHARS SO FAR JNZ GFN4 JMP GFN6 ;ELSE TAKE ERROR SEXIT GFN5: STC ;CLEAR ERROR FLAG AND RETURN CMC RET GFN6: STC ;SET ERROR FLAG AND RETURN RET GFNS1: DB 'FILENAME? ',0 ; OPEN - OPEN DISK FILE OPEN: PUSH H PUSH D PUSH B LXI D,FCB MVI C,OFFC CALL BDOS POP B POP D POP H RET ; READ - READ RECORD FROM DISK FILE READ: PUSH H PUSH D PUSH B LXI D,FCB MVI C,RRFC CALL BDOS POP B POP D POP H RET ; CLOSE - CLOSE DISK FILE CLOSE: PUSH H PUSH D PUSH B LXI D,FCB MVI C,CFFC CALL BDOS POP B POP D POP H RET ; DELT - DELETE DISK FILE DELT: PUSH H PUSH D PUSH B LXI D,FCB MVI C,DFFC CALL BDOS POP B POP D POP H RET ; WRITE - WRITE RECORD TO DISK WRITE: PUSH H PUSH D PUSH B LXI D,FCB MVI C,WRFC CALL BDOS POP B POP D POP H RET ; MAKE - MAKE NEW DISK FILE MAKE: PUSH H PUSH D PUSH B LXI D,FCB MVI C,MFFC CALL BDOS POP B POP D POP H RET ; DATA AREA MCB: DS 1 ;RTTY CONTROL BYTE INCH: DS 1 ;INPUT CHAR BUFFER (TO CYBER) OUTCH: DS 1 ;OUTPUT CHAR BUFFER (FROM CYBER) OLDSP: DS 2 ;OLD STACK POINTER STACK: DS 128 ;LOCAL STACK IBUF: DS 256 ; TSEXT BUFFER FLAG: DS 1 ;TSEXT SAVE FLAG PTR: DS 2 ;TSEXT BUFFER POINTER SIZE: DS 2 ;TSEXT BUFFER SIZE TBUF EQU $ ;START OF TSEXT BUFFER NUM EQU TBUF ;TEMPORARY BUFFER FOR PHONE NUMBER END LINK