ngbasic

Version 0.2.16 (2006-11-27)

• As Firefox extensions are Javascript, I hacked the 0.2.14 version to work as an extension in Firefox, making it appear under Tools / BASIC.

Version 0.2.14 (2006-05-20)

• Problem with Find dialog popping up when ‘/’-key is pressed has been solved. Additionally also ignored the F5-reload key to prevent an accidental loss of a BASIC program.
• Mysterious ‘OUT OF DATA’ error, when RUNning a program from another program has been fixed.
• DEF-support implemented, allowing to define functions like:
  DEF FUN(A)=(5+A)*10

Version 0.2.12 (2006-02-22)

• Internal clean-up:
  • Renamed class ‘emulator’ to ‘interpreter’ for we do not emulate.
  • Removed lots of old debug-messages and other obsolete code.
  • Dropped command ‘CHANGES’ that showed outdated ChangeLog.

Version 0.2.10 (2006-02-17)

• Bugfixed drawing problem due to wrong order of canvas methods beginPath( ) and closePath( ), which caused polygons to appear. Strangely, this didn’t affect early versions of Firefox 1.5 though.

Version 0.2.8 (2006-02-04)

• To quickly hack together a Big Font version I had to make some internal changes to override font and window sizes.
• Made canvas size equal to the window size.

Version 0.2.6 (2005-12-24)

• IF supports OR & AND through recursion.
• LLIST lists the program to the ‘emulated’ lineprinter window.
• Fixed ‘hang’ at line 5001 (MAX_LINES+1) if END was not encountered or if no program was present.

Version 0.2.4 (2005-12-11)

• Graphics supported through Firefox canvas object.
• Assignments now follow the ‘official’ order of operations through recursion.
• *MAJOR* rewrite of parsing routines;
  • INPUT standards-conform.
  • IF..THEN..ELSE standard-conform (no OR / AND yet)
  • RUN supports direct filename now.
  • String functions now contain ‘$’-sign like the standard suggests (i.e. MID(..) now is MID$(..)).
• New commands:
  • NEW clears current program from line memory.
• New functions: SQR( ), VAL( ), STR$( ), CHR$( )
• First element of array now contains its length (or, the maximum assigned element).
• PRINT uses rewritten getValue( ) routine now, as do IF and FOR.
• LPRINT support built-in (outputs in seperate window).
• Division by zero properly caught.

Version 0.2.2 (2005-12-07)

• GOSUB/RETURN implemented.
• Completely removed all eval() calls.
• Assignments heavily bugfixed.
• Lots of new routines, string and numbers.

Version 0.2.0 (2005-12-05)

• Another method for storing & retrieving variables implemented which no longer requires the use of the evil eval( )-call. This re-write might have broken some things I’m not yet aware of though.
• History implemented (use Arrow Up & Arrow Down to go through it).
• READ and DATA implemented. Note that DATA lines should be encountered before the READ lines, though.
• DELAY msec implemented, which can change the run-interval (default is fast and might put a load on the browser). To change to 1 line per second, use DELAY 1000.
• IF..ELSE now supported
• COLOUR cursor_fg,cursor_bg,screen_bg implemented
• LET can now concat strings (LET A$=B$+C$, et cetera).
• Ctrl-C abort message now mentions program position.
• EXIT implemented which closes the window the interpreter is loaded in.
• Theme ‘YO’ implemented as PoC; use GOYO to activate.

 
Version 0.1

• Virtual FS (local & remote) implemented.

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