Online C64 BASIC

This is an online Commodore 64 emulator for sharing BASIC snippets. BASIC will be converted to PRG and executed in a C64 emulator. Links can be generated for sharing. Upload or drag and drop PRG and BASIC files anywhere on the screen

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BASIC

10 REM - THIS NUMBER GUESSING GAME IS BASED ON GUESS AND HI-LO

20 REM - FROM DAVID H. AHL'S BOOK BASIC COMPUTER GAMES.

30 PRINT "======="

40 PRINT " ZERO!"

50 PRINT "=======":PRINT

60 PRINT "I CHOOSE A NUMBER BETWEEN 1 AND 100.":PRINT

70 PRINT "YOU MUST ZERO IN ON IT IN 7 GUESSES.":PRINT

80 PRINT "I TELL YOU TO GUESS HIGHER, OR LOWER.":PRINT

90 INPUT "PRESS ENTER TO START. READY"; START$

100 NUM = INT(100*RND(1))

110 PRINT:PRINT "====================":PRINT

120 PRINT "I HAVE CHOSEN A NUMBER ":PRINT

130 FOR COUNT = 1 TO 7

140 PRINT "GUESS ";COUNT;

150 INPUT ": "; GUESS$

160 GUESS = VAL(GUESS$)

170 IF GUESS = NUM GOTO 250

180 IF GUESS > NUM THEN PRINT "GUESS LOWER"

190 IF GUESS < NUM THEN PRINT "GUESS HIGHER"

200 PRINT

210 NEXT COUNT

220 PRINT:PRINT "YOU'VE USED ALL OF YOUR GUESSES."

230 PRINT "THE NUMBER WAS";NUM

240 GOTO 270

250 PRINT "YOU GOT IT IN ";COUNT;

260 PRINT " GUESSES."

270 PRINT

280 INPUT "PLAY AGAIN? (Y/N) "; A$

290 IF A$ = "Y" THEN GOTO 100

300 END

3rd party credits

The emulator is made by Thomas Hochgoetz
C64 font by style64.org

Changelog

2.0 (2023-12-18)
- Rewrote the converter, fixing numerous bugs. Added support for mixed-case (CBM prg Studio)
- Removed macro support for {chr192} {$192} lists {CLR,PI} or {$40,41,42,32}
- Added BasText macro definitions
- Added upload BASIC and PRG files
- Added download PRG button
- Link is now generated inline

1.4 (2023-06-11) 
- Improved error messages
- Added 80 characters with abbreviations validation
- Added new byte macros e.g {chr192} or {$192}
- Added macro list support e.g. {CLR,PI} or {$40,41,42,32}

1.3 (2023-01-06)
- If first line has a REM statement, this should be the HTML title

1.2 (2023-01-03)
- Autostart BASIC in emulator
- Emulator in top of screen
- Added favicon
- Added og:image generated from code (image preview in Facebook) 
- Added parse error handling (shown in a messagebox)

1.1 (2023-01-01)
- Added PETSCII charset
- Added marcro support
- Added keyword abbreviation support

1.0 (2022-12-30)
- First version online. Translates a subset of BASIC code into executable PRG format