10 REM ***************** 15 REM * XMODEM 64 3.5 * 20 REM * KARL SCHMITT * 25 REM ***************** 30 REM * VIC-20 VERSON * 35 REM * BY JOHN DAVIS $ 40 REM ***************** 45 POKE39928,10:POKE39929,48:PRINTCHR$(151)CHR$(14):OPEN5,2,3,CHR$(6)+CHR$(.) 50 OPEN15,8,15:U=212:D=256:W=1:E$=CHR$(147):C=250:S=64:P$=CHR$(19):O=8 55 BL$="":ER$=" "+CHR$(13) 60 ACK=6:NAK=21:EOT=4:CAN=24:Z=131:V=132:F=255:M=288:P=12 65 C$=CHR$(.):R$=CHR$(18):J$=CHR$(13):O$=CHR$(18)+CHR$(32)+CHR$(157)+CHR$(146) 70 PRINTE$"XMODEM VIC"J$ 75 PRINT"DOWNLOAD & UPLOAD":G$=CHR$(133):Q$=CHR$(34):I$=CHR$(20) 80 PRINT" TERMINAL PGM"J$J$"DISK VERSION 3.5"J$J$ 85 PRINT"BY KARL SCHMITT"J$"AND JOHN DAVIS"J$ 90 PRINT"HIT FOR MAIN MENU" 95 PRINTJ$"USE XMODEM PROTOCOL FOR ALL TRANSFERS."J$J$:L$=CHR$(32)+CHR$(157) 100 PRINT"1. FULL DUPLEX"J$"2. HALF DUPLEX"J$ 105 PRINT"TYPE 1 OR 2 TO BEGIN.":GOSUB510:IFA$="1"THEN120 110 IFA$="2"THENB=W:GOTO120 115 GOTO105 120 DIMF%(F),T%(F),U%(P,V) 125 PRINTE$"PLEASE STAND BY FOR 9 SECONDS."J$J$"CREATING TRANSLATION TABLES." 130 FORJ=32TO64:T%(J)=J:NEXT:T%(13)=13:T%(20)=8:FORJ=65TO90:T%(J)=J+32:NEXT 135 FORJ=91TO95:T%(J)=J:NEXT:FORJ=193TO218:T%(J)=J-128:NEXT:T%(146)=P 140 T%(133)=P:T%(147)=19:T%(137)=3:T%(134)=17:T%(138)=19:FORJ=.TOF:K=T%(J) 145 IFK<>.THENF%(K)=J:F%(K+128)=J 150 NEXT:QQ$=Q$+CHR$(157)+CHR$(32)+CHR$(157) 151 REM ENTER LETTERS A-Z & SYMBOLS @*+-\ ON LINE 153 WITH COMMODORE KEY DOWN 152 REM IT MAY BE NESSARY TO USE THE SHORT FORM OF SOME COMMANDS 153 A$="ABCDEFGHIJKLMNOPQRSTUVWXYZ@*+-\":FORX=1TOLEN(A$):T%(ASC(MID$(A$,X,1)))=X:NEXT 155 REM------------TERMINAL------------ 160 PRINTCHR$(14) 165 PRINTE$" TERMINAL MODE"J$:IFA$=CHR$(CAN)THENPRINT"TRANSFER CANCELLED!" 170 IFFA=WTHENPRINT"WHEN HOST IS READY TO RECIEVE, HIT F1"J$"FOR MAIN MENU AND"; 175 IFFA=WTHENFA=.:PRINT" START THE UPLOAD."J$ 180 GET#5,A$:IFA$=""THEN195 185 PRINTL$CHR$(F%(ASC(A$)));:IFA$=Q$THENPRINTQQ$; 190 GOTO180 195 PRINTO$;:GETA$:IFA$=""THEN180 200 IFB=WTHEN:X=ASC(A$):IFX=13ORX=145ORX=157ORX=29ORX=17ORX=19THENPRINTL$; 205 IFB=WTHENPRINTA$;:IFA$=Q$THENPRINTQQ$; 210 IFA$=G$THENPRINTL$J$:GOTO325 215 PRINT#5,CHR$(T%(ASC(A$)));:GOTO180 220 REM-----------DOWNLOAD------------- 225 PRINTE$"IS HOST COMPUTER WAITING TO SEND? Y/N":GOSUB510:IFA$="N"THEN160 230 PRINTJ$:IFA$<>"Y"THEN225 235 G=3:K$="W":GOSUB350:PRINT:BL=. 240 PRINTJ$"DOWNLOADING "F$J$:GOSUB535:BL=0 250 CH=W:GET#5,D$:IFD$=CHR$(W)THENL=.:GOTO255 251 IFD$=CHR$(EOT)THENGOSUB525:CLOSE3:PRINT:PRINT"DONE":GOSUB620:GOTO160 252 IFD$=CHR$(CAN)THENGOSUB525:CLOSE3:PRINT:PRINT"CANCELLED":GOSUB620:GOTO160 253 GOTO260 255 PRINT":";:FORZZ=1TO1000:NEXT 256 FORX=2TO131:GET#5,A$:A$=LEFT$(A$+CHR$(0),1):D$=D$+A$:CH=(CH+ASC(A$))AND255:NEXT 257 GOTO 290 260 GETA$:IFA$=J$THENQ=10:GOTO530 270 L=L+W:IFL=220THENL=.:GOSUB530:PRINTCHR$(18)"WAITING"CHR$(146)Q:GOTO250 275 GOTO250 290 GET#5,A$:BK=0:FORX=1TO3 295 BK=BK+ASC(MID$(D$,X,1))AND255:NEXT:IFBKTHENPRINT"SOH ERROR":GOSUB530:GOTO250 300 IFASC(A$)<>(CHAND255)THENPRINT"CHECKSUM ERROR":GOSUB530:GOTO250 305 BL=(BL+1)AND255 310 IFASC(MID$(D$,2,1))<>BLTHENPRINT:PRINT"BLOCK NUMBER ERROR":GOSUB530:BL=(BL-1+256)AND255:GOTO250 315 PRINTCHR$(18)"DOWNLOADED BLOCK"BL;CHR$(146);:PRINT#3,MID$(D$,4,128) 316 Q=.:GOSUB525:GOTO250 320 REM-----------MENU----------------- 325 PRINTE$ 330 PRINTJ$"1. DOWNLOAD"J$"2. UPLOAD"J$"3. TERMINAL"J$"4. DIRECTORY" 335 PRINT"5. RE-START UPLOAD"J$"6. END":GOSUB510 340 ONVAL(A$)GOTO225,380,160,480,590,520 345 GOTO330 350 POKE39928,10:POKE39929,96:PRINTE$:INPUT"FILENAME E(X)IT.";F$:IFF$="X"THEN325 355 PRINTE$:INPUT"FILETYPE (P)ROGRAM (S)EQUENTIAL E(X)IT";FT$:IFFT$="X"THEN325 360 FT$=LEFT$(FT$,W):POKE39928,10:POKE39929,48 365 OPENG,8,G,"0:"+F$+","+FT$+","+K$:INPUT#15,A,B$:PRINTE$;A;B$:IFA=.THENRETURN 370 CLOSEG:GOTO330 375 REM-----------UPLOAD--------------- 380 G=6:K$="R":GOSUB350:BL=.:FA=W 385 PRINTER$"READING ":FORY=WTOP:U%(Y,W)=W 390 BL=BL+W:U%(Y,2)=BL:U%(Y,3)=F-BL:CH=W+U%(Y,2)+U%(Y,3):PRINTER$"BLOCK"BL 395 FORX=EOTTOZ:GET#6,B$:IFST=.THEN405 400 FL=Y:CH=CH+U%(Y,X):FORA=X+WTOZ:U%(Y,A)=.:NEXT:U%(Y,V)=CHANDF:GOTO410 405 U%(Y,X)=ASC(B$+C$):CH=CH+U%(Y,X):NEXT:U%(Y,V)=CHANDF:NEXT:Y=Y-W 410 IFFA=WTHEN160 415 GET#5,A$:IFA$<>CHR$(NAK)THEN415 420 BL=BL-Y:Y=. 425 PRINTER$"UPLOAD STATUS"J$"NAK"BL$"UPLOADING" 430 Y=Y+W:BL=BL+W 435 PRINTBL$"BLOCK"BL:FORX=WTOV:PRINT#5,CHR$(U%(Y,X));:NEXT 440 FORA=.TO1200:GET#5,A$:IFA$=""THENNEXT:GOTO435 445 IFA$=CHR$(ACK)THENIFY=PTHENPRINTER$"ACK":GOTO385 450 IFA$=CHR$(ACK)THENIFFL<>YTHENPRINTER$"ACK":GOTO430 455 IFA$=CHR$(ACK)THENIFFL=YTHENFL=.:GOSUB540:GOSUB545:CLOSE6:GOTO555 460 IFA$=CHR$(NAK)THENPRINTER$"NAK":GOTO435 465 IFA$=CHR$(CAN)THENCLOSE6:GOTO555 470 GOTO440 475 REM---------DIRECTORY-------------- 480 PRINTE$:OPEN1,8,0,"$0":GET#1,A$,A$ 485 GET#1,A$,A$:IFA$=""THEN505 490 GET#1,A$,B$:PRINTASC(A$+C$)+ASC(B$+C$)*D; 495 GET#1,A$:IFA$=""THENPRINT:GOTO485 500 PRINTA$;:GOTO495 505 CLOSE1:GOTO330 510 GETA$:IFA$=""THEN510 515 RETURN 520 POKE39928,10:POKE39929,96:END 525 PRINT#5,CHR$(ACK);:Q=.:PRINT" ACK":RETURN 530 Q=Q+W:IFQ>10THENCLOSE3:A$=CHR$(CAN):PRINT#5,A$:GOTO555 535 PRINT#5,CHR$(NAK);:RETURN 540 PRINT#5,CHR$(EOT);:RETURN 545 GET#5,A$:IFA$=""THEN545 550 RETURN 555 PRINT"HIT ANY KEY FOR TERMINAL MODE" 560 SO=54272 565 POKESO+1,250:POKESO+5,10:POKESO+15,200 570 POKESO+24,15:FORCL=1TO12:POKESO+4,21:FORTM=1TO1250:NEXT:POKESO+4,20 575 GETB$:IFB$=""THEN565 580 SO=54272:FORCL=.TO24:POKESO+CL,.:NEXT 585 GOTO160 590 PRINTE$"IS HOST COMPUTER READY TO RECIEVE? Y/N"J$:GOSUB510:IFA$="N"THEN160 595 IFA$<>"Y"THEN590 600 PRINTE$"HAVE THE FIRST 16 (OR LESS) BLOCKS TO UPLOAD BEEN READ YET?" 605 GOSUB510:IFA$="N"THEN160 610 IFA$<>"Y"THEN600 615 PRINTE$"UPLOADING "F$:GOTO410 620 CLOSE15:OPEN15,8,15:INPUT#15,A,B$,C,D:CLOSE15:PRINTA,B$,D;D:RETURN