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Re: 8051-variant dev board recommendations

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On 07.07.2016 08:43, David Brown wrote:
> 
> I don't think Philipp is looking for these boards because he actually
> /wants/ to use the ancient 8051 devices.  As a general point, few people
> ever choose an 8051 core if they have a choice - they pick a device for
> the peripherals and are stuck with the core that comes with it.  But
> Philipp is heavily involved in the SDCC compiler - he will be looking
> for these devices to test the compiler on them.
> 
> 

We intend to improve the 8051 support, which includes adding support for
multiple dptr in SDCC. And maybe also MDU. So I was looking for
corresponding hardware.
The mcs51 backend is the oldest in SDCC. But I feel it has fallen a bit
behind with the rapid development the other ports have been seeing. So
it seems time to catch up a little.
Also, the 8051-Derivatives are still quite popular, and some vendors
actually recommend SDCC (or support it in their IDE, or ship their own
SDCC fork). That has not yet happened for other SDCC backends.

Philipp

P.S.: I'll get a Cypress FX2LP dev board: There are cheap (less than
10€) boards, supported by free fxload. They use the AMD 80C521-style
dual dptr. And some C8051 board(s), since there also are cheap ones with
free software support.

I'm still looking for an Atmel AT89S353 board, since they are supported
by avrdude (or s51dude fork) and use the Philips P89C51R-style dual
dptr. There is an interesting one
(http://www.ieap.uni-kiel.de/surface/ag-berndt/lehre/fpmc/exp-board.html),
but one has to make them oneself. Any they don't have a header to
connect with the usbtinyisp.

The Axsem AX8052 would hardware-wise also be a good match for my
requirements, but it seems there is a bit of non-free software involved
in programming them, and their devkits seem like overkill for what I
want to do.

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Thread

8051-variant dev board recommendations Philipp Klaus Krause <pkk@spth.de> - 2016-07-07 01:26 +0200
  Re: 8051-variant dev board recommendations Michael Karas <mkaras@carousel-design.com> - 2016-07-06 21:35 -0700
    Re: 8051-variant dev board recommendations David Brown <david.brown@hesbynett.no> - 2016-07-07 08:43 +0200
      Re: 8051-variant dev board recommendations Philipp Klaus Krause <pkk@spth.de> - 2016-07-10 18:50 +0200
  Re: 8051-variant dev board recommendations Martin Riddle <martin_ridd@verizon.net> - 2016-07-07 19:34 -0400

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