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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Adapting an Ada compiler to generate 8051 code (Again?! ;-)
Date: Wed, 31 Mar 2021 18:06:42 -0500
Organization: JSA Research & Innovation
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:s3uskg$vif$1@gioia.aioe.org...
> On 2021-03-30 11:04, mockturtle wrote:
>
>> for a project related to a possible start-up, we need to program a Flash 
>> controller that has a 8051 core (as many other controllers).  I would 
>> like using Ada for that, but I discovered (also by browsing c.l.a.) that 
>> there is no Ada compiler producing 8051 code.
>
> I think the efforts would be better invested in recycling all existing 
> 8051 cores. Make the planet greener! (:-))
>
> Honestly, there is little useful one could do in 64K. Remember what one 
> famous thinker and epidemiologist said about 640K? [640K is 10 times more 
> than 64K]

Gee, the early versions of Janus/Ada were *hosted* in 48K. Apparently, a 
compiler is nothing useful??? ;-)

We studied this problem back in the day (30+ years ago).The problem is the 
8051 architecture, which doesn't have a usable stack or the instructions to 
make one. You would have to avoid recursion and any long chain of calls. Not 
sure whether the result would program much like Ada, it would be much closer 
to Fortran 66.

                     Randy.