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Re: Integer Basic Tokenization
- Subject: Re: Integer Basic Tokenization
- From: david@uow.edu.au (David Wilson)
- Date: 18 Mar 2001 14:40:13 +1100
- Newsgroups: comp.emulators.apple2, comp.sys.apple2, comp.sys.apple2.programmer
- Organization: University of Wollongong
- References: <98rh8a$ead$1@news7.svr.pol.co.uk> <98sef0$5tq$1@merope.saaf.se> <vwrs6.20654$PH.1741328@e3500-chi1.usenetserver.com> <98vj3d$336$1@merope.saaf.se>
- Xref: supernews.google.com comp.emulators.apple2:840 comp.sys.apple2:6695 comp.sys.apple2.programmer:554
pausch@saaf.se (Paul Schlyter) writes:
>Applesoft (as well as several other related versions, such as PET
>Basic and Commodore 64 Basic) was really Microsoft's 6502 version of
>its Basic interpreter version 2. Microsoft never upgraded the 6502
>Basic interpreters any further, but the 8080 versions got released in
>new versions up to version 5.(something).
My OSI Superboard has an 8KB version of Microsoft's 6502 BASIC which is
so old it even works on the oldest 6502 CPU which did not have a ROL
(or it may have been ROR) instruction. It has many similarities to Applesoft
but some differences as well:
AND OR and NOT are binary operators rather than booleans
floating point is 4 byte instead of 5 byte
--
David Wilson School of IT & CS, Uni of Wollongong, Australia