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Re: DurexForth v1.5.0

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On 1/5/2016 3:48 AM, Johan Kotlinski wrote:
> On Tuesday, January 5, 2016 at 5:55:00 AM UTC+1, hughag...@gmail.com
> wrote:
>> This seems reasonable --- so long as a char is 8-bit, there is no
>> reason why it has to be any particular character coding --- we have
>> the words SPACE and CR that abstractify blanks and
>> carriage-controls, so they don't have to be any particular code.
>>
>> As I recall, PETSCII was an 8-bit extended version of ASCII, with
>> the lower half being ascii and the upper half being all the
>> extension chars --- there are several 8-bit extended versions of
>> ASCII in use nowadays.
>
> Well, PETSCII is distinctly different from ASCII also in the lower
> half. For example, the code ranges for a-z, A-Z are moved. This is
> perfectly fine with C, since it only requires essential characters to
> be defined, and that the a-z A-Z 0-9 ranges are internally
> sequential. To me that seems like a nice way to do it. On the flip
> side, I do not see any benefit of user programs assuming ASCII. It is
> easier to write '!' than 33 (ASCII code for !).
>
> This is not a huge deal for me, since all it means is that I would
> have to apply the tag "with Environmental Restrictions" whenever I
> make the bold claim that my Forth is a "Standard System". However I
> would like to raise the issue. Maybe there is something I
> overlooked.

If the C64 does not use ASCII it would have a hard time exchanging text 
files with the rest of the computer world, no?  I can't imagine why it 
would be useful to not use the 128 ASCII codes.  One time it would be an 
issue is when converting from ASCII-hex to integers.  It is not uncommon 
to hard code the conversion constants as numbers rather than use the 
ASCII characters.  This would be broken on the C64 I expect.

-- 

Rick

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DurexForth v1.5.0 Johan Kotlinski <kotlinski@gmail.com> - 2016-01-04 15:08 -0800
  Re: DurexForth v1.5.0 hughaguilar96@gmail.com - 2016-01-04 20:54 -0800
    Re: DurexForth v1.5.0 Johan Kotlinski <kotlinski@gmail.com> - 2016-01-05 00:48 -0800
      Re: DurexForth v1.5.0 rickman <gnuarm@gmail.com> - 2016-01-05 04:40 -0500
        Re: DurexForth v1.5.0 Johan Kotlinski <kotlinski@gmail.com> - 2016-01-05 02:53 -0800
          Re: DurexForth v1.5.0 rickman <gnuarm@gmail.com> - 2016-01-05 09:19 -0500
            Re: DurexForth v1.5.0 Chris Curl <ccurl609@gmail.com> - 2016-01-05 08:44 -0800
              Re: DurexForth v1.5.0 rickman <gnuarm@gmail.com> - 2016-01-05 11:53 -0500
                Re: DurexForth v1.5.0 Chris Curl <ccurl609@gmail.com> - 2016-01-05 10:28 -0800
                Re: DurexForth v1.5.0 rickman <gnuarm@gmail.com> - 2016-01-05 14:12 -0500
                Re: DurexForth v1.5.0 Paul Rubin <no.email@nospam.invalid> - 2016-01-05 11:16 -0800
                Re: DurexForth v1.5.0 rickman <gnuarm@gmail.com> - 2016-01-05 14:58 -0500
                Re: DurexForth v1.5.0 Paul Rubin <no.email@nospam.invalid> - 2016-01-05 12:03 -0800
                Re: DurexForth v1.5.0 rickman <gnuarm@gmail.com> - 2016-01-05 15:10 -0500
                Re: DurexForth v1.5.0 Paul Rubin <no.email@nospam.invalid> - 2016-01-05 12:36 -0800
                Re: DurexForth v1.5.0 rickman <gnuarm@gmail.com> - 2016-01-05 16:34 -0500
                Re: DurexForth v1.5.0 Johan Kotlinski <kotlinski@gmail.com> - 2016-01-05 13:42 -0800
                Re: DurexForth v1.5.0 hughaguilar96@gmail.com - 2016-01-05 16:40 -0800
                Re: DurexForth v1.5.0 Johan Kotlinski <kotlinski@gmail.com> - 2016-01-05 18:13 -0800
                Re: DurexForth v1.5.0 "Elizabeth D. Rather" <erather@forth.com> - 2016-01-05 16:27 -1000
                Re: DurexForth v1.5.0 Paul Rubin <no.email@nospam.invalid> - 2016-01-05 18:59 -0800
                Re: DurexForth v1.5.0 Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-01-05 22:47 -0800
                Re: DurexForth v1.5.0 "Elizabeth D. Rather" <erather@forth.com> - 2016-01-05 21:37 -1000
                Re: DurexForth v1.5.0 Paul Rubin <no.email@nospam.invalid> - 2016-01-06 00:14 -0800
                Re: DurexForth v1.5.0 Ron Aaron <rambamist@gmail.com> - 2016-01-06 10:32 +0200
                Re: DurexForth v1.5.0 Paul Rubin <no.email@nospam.invalid> - 2016-01-06 00:42 -0800
                Re: DurexForth v1.5.0 Ron Aaron <rambamist@gmail.com> - 2016-01-06 11:02 +0200
                Re: DurexForth v1.5.0 Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-01-06 01:51 -0800
                Re: DurexForth v1.5.0 Ron Aaron <rambamist@gmail.com> - 2016-01-06 12:02 +0200
                Re: DurexForth v1.5.0 Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-01-06 10:46 +0000
                Re: DurexForth v1.5.0 Ron Aaron <rambamist@gmail.com> - 2016-01-06 12:49 +0200
                Re: DurexForth v1.5.0 Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-01-06 03:12 -0800
                Re: DurexForth v1.5.0 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-01-06 18:21 +0000
                Re: DurexForth v1.5.0 Johan Kotlinski <kotlinski@gmail.com> - 2016-01-06 22:57 -0800
                Re: DurexForth v1.5.0 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-01-07 08:47 +0000
                Re: DurexForth v1.5.0 Coos Haak <chforth@hccnet.nl> - 2016-01-06 13:39 +0100
                Re: DurexForth v1.5.0 Ron Aaron <rambamist@gmail.com> - 2016-01-06 14:45 +0200
                Re: DurexForth v1.5.0 Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-01-06 12:48 +0000
                Re: DurexForth v1.5.0 Syd Rumpo <usenet@nononono.co.uk> - 2016-01-07 11:09 +0000
                Re: DurexForth v1.5.0 hughaguilar96@gmail.com - 2016-01-06 22:57 -0800
        Re: DurexForth v1.5.0 no.top.post@gmail.com - 2016-01-14 12:45 +0000
  Re: DurexForth v1.5.0 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-01-05 10:37 +0000
    Re: DurexForth v1.5.0 Johan Kotlinski <kotlinski@gmail.com> - 2016-01-05 03:08 -0800
  Re: DurexForth v1.5.0 Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2016-01-06 12:22 +0100
    Re: DurexForth v1.5.0 Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-01-06 13:08 +0000
  Re: DurexForth v1.5.0 Rod Pemberton <NoHaveNotOne@bcczxcfre.cmm> - 2016-01-07 03:14 -0500

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