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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: C bug of the day
Date: Fri, 13 Jun 2003 18:40:06 -0500
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Date: 2003-06-13T18:40:06-05:00
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Pascal Obry wrote in message ...
>
>Wesley Groleau <wesgroleau@despammed.com> writes:
>
>> I had "Janus" on a Z80 in the late 1980s.
>> Janus was a subset of Ada--I don't remember
>> what was missing.
>
>Almost everything! If my memory is right I have used a Janus Ada
compiler back
>in 1987. It was basically Pascal (no task, no generic, lot of bugs). It
was
>also impossible to build programs except very very small ones otherwise
we had
>a "not enough memory" error...


Right. It's very hard to build a useful compiler that fit in 56K of RAM
(which is what was available on CP/M). But the Z-80 was a lot more
memory efficient than the 8088 was, so it could compiler bigger programs
than the early PC's could (with 128K of RAM).

Even the MS-DOS version (full Ada 83) has quite limited compilation
sizes because of 640K doesn't go that far. (Text_IO uses about 65% of
the available memory.)

Cross-compiling from Windows or a Unix never had that problem, of
course. It's unfortunate that so many people found the limitations of
the platform to somehow be a limitation of the technology/vendor.

                 Randy Brukardt