BASIC (Was: Reading HP2000 tapes

And so does the HP 85. Marc > On Jul 17, 2018, at 1:50 PM, Brent Hilpert via cctalk <cctalk at classiccmp.org> wrote: > > The HP9830 (1972) with it's ROM'ed BASIC works this way. > LIST produces a 'cleaned up' version of the source code. > > > >> On 2018-Jul-17, at 1:21 PM, Guy Sotomayor Jr via cctalk wrote: >> >> I should also mention that for the IBM S/23, once the BASIC program is entered, the original >> source is discarded and only the tokenized code remains (comments are retained as-is). The >> LIST command runs a de-tokenizer and reconstructs the original source (well close to it anyway). >> >> TTFN - Guy >> >>> On Jul 17, 2018, at 12:33 PM, John Foust via cctalk <cctalk at classiccmp.org> wrote: >>> >>> At 03:53 PM 7/14/2018, Fred Cisin via cctalk wrote: >>>>> On Sat, 14 Jul 2018, Ed Sharpe via cctalk wrote: >>>>> isn't the? basic? programs? also stored in tokinized? forms!?!? >>>> Yes. >>>> And the tokens are not the same between different brand implementations, or even between different versions, such as MBASIC 4 and MBASIC 5. >>>> http://fileformats.archiveteam.org/wiki/Tokenized_BASIC >>> I remember a detokenizer for RSTS BASIC-PLUS that's not on that list. >>> >>> I think it was called a "decompiler" though. Seemed like magic at the time. >>> >>> Googling reveals "You may be remembering the BASIC PLUS >>> decompiler under RSTS. RSTS BASIC PLUS was interpreted from "push-pop" code. >>> The symbol table was available in the compiled file, and the correspondence >>> between push-pop operations and BASIC PLUS source was very close, so you >>> could get back very reasonable code." >>> >>> And our previous discussion of it a decade ago: >>> >>> https://marc.info/?l=classiccmp&m=121804804023540&w=2 >>> >>> - John >>>