RE: FPGA (was: 6809 / 6702 puzzle)

The 6525 would be very straight forward, you could also do it using a
schematic as entry as it's latches and buffers.

The tools are all free, I switched from Xylinx to Altera many years ago, and
the there are relatively cheap dev boards, from $70-$200 that can have a
general purpose I/O breakout.
-----Original Message-----
From: owner-cbm-hackers@musoftware.de
[mailto:owner-cbm-hackers@musoftware.de] On Behalf Of Michal Pleban
Sent: Monday, April 23, 2012 3:38 AM
To: cbm-hackers@musoftware.de
Subject: Re: FPGA (was: 6809 / 6702 puzzle)

Hello!

Baltissen, GJPAA (Ruud) wrote:
> Hallo Dave and Michał,

> The 8088, 8284, 8288 and 6526 are very common. The 8087 will cost more
> effort but the 6525 could be a problem. What about a board with the most
> common ICs and a FPGA/CPLD covering the glue logic and the 6525?

Well, the 6525 chip is also rather hard to get nowadays. It would be much
better to have it on FPGA than to hunt for old CDTV or 1551 machines to
cannibalize them...

I guess there is no available 6525 core to reuse. Maybe I should go back to
my long-forgotten Verilog skills and create one? ;-)

Regards,
Michau.




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