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Joshua Bell 2013-05-08 20:49:09 -06:00
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@ -3,8 +3,8 @@ jsbasic - Applesoft BASIC in JavaScript
This is hosted for playing with at http://calormen.com/applesoft/ This is hosted for playing with at http://calormen.com/applesoft/
* The code depends on various polyfills at: http://calormen.com/polyfill * The code depends on various [polyfills](http://github.com/inexorabletash/polyfill)
* The editor depends on CodeMirror and custom BASIC parser/styles * The editor optionally uses [CodeMirror](http://codemirror.net) and custom BASIC parser/styles
Notes & Known Issues Notes & Known Issues
-------------------- --------------------
@ -12,7 +12,7 @@ Notes & Known Issues
* Handling of BASIC code that does not match the canonical `LIST` output format may not behave as on an Apple: * Handling of BASIC code that does not match the canonical `LIST` output format may not behave as on an Apple:
* Keyword parsing differs from Applesoft command line. For example `FOR I = S TO P` doesn't collapse into `FOR I = STOP`. * Keyword parsing differs from Applesoft command line. For example `FOR I = S TO P` doesn't collapse into `FOR I = STOP`.
* The interpreter doesn't actually care about line numbers for statement ordering (just for `GOTO/GOSUB` targets and `IF` statements). So `20 PRINT "A"`, `10 PRINT "B"` will just print `A`, then `B` * The interpreter doesn't actually care about line numbers for statement ordering (just for `GOTO/GOSUB` targets and `IF` statements). So `20 PRINT "A"`, `10 PRINT "B"` will just print `A`, then `B`
* To improve readability, lines may start with : and continue the previously numbered line. * To improve readability, lines may start with `:` and continue the previously numbered line.
* Floating point overflow is only detected on variable assignment. * Floating point overflow is only detected on variable assignment.
* The DOS operating system implements only a subset of DOS 3.3 and ProDOS useful for basic file I/O. * The DOS operating system implements only a subset of DOS 3.3 and ProDOS useful for basic file I/O.
* Except for a small number of compatibility shims for common operations (e.g. keyboard strobe), commands that refer to assembly routines (`PEEK`, `POKE`, `CALL`, `USR` etc.), shape tables, or tape I/O are not implemented. * Except for a small number of compatibility shims for common operations (e.g. keyboard strobe), commands that refer to assembly routines (`PEEK`, `POKE`, `CALL`, `USR` etc.), shape tables, or tape I/O are not implemented.