Re: Strange 8255 behavior

From: silverdr_at_wfmh.org.pl
Date: Fri, 15 Jun 2018 13:03:44 +0200
Message-Id: <123307CF-D5F5-456F-8072-044CFAC039D2@wfmh.org.pl>
> On 2018-06-15, at 13:01, Michał Pleban <lists@michau.name> wrote:
> 
>> There was an interesting and fairly comprehensive discussion on the
>> current state of programmable logic recently here:
>> 
>> http://forums.nesdev.com/viewtopic.php?f=9&t=17247
> 
> Thay don't seem to mention ATMEL though.

They did.

"
Atmel (Microchip)'s ATF150x series. 5V natively, but definitely the wrong price for the 64 ($2.5-4/) and 128 ($4-17/ ???) macrocell versions. The 32 macrocell version has gotten cheaper since the last time I looked, now $1.5-2.5/ — which is actually sorta competitive.

The free option for programming for these is an ancient (effectively abandonware) copy of WinCUPL, with its own esoteric programming language. It's not a great programming language, but it works. I found the test framework to be vaguely annoying (in that the work flow was "generate stimulus, simulate, verify output" rather than anything more immediate).

The other option is called ProChip Designer and I decided dealing with licensing wasn't something I wanted to try. But it does actually support Verilog and VHDL workflows.
"

-- 
SD! - http://e4aws.silverdr.com/
Received on 2018-06-15 14:00:22

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