18 Jul
2018
18 Jul
'18
10 a.m.
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