BASIC (Was: Reading HP2000 tapes

[Curious Marc]

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
>>> 
>> 
>