Posted By
Bionic
on 2007-02-24
08:39:00
|  Re: Interest in a new SID Card ???
Hi Christian,
great to read that you are active again! 
I uploaded the files I had online for my sid-card prototype to a new address: http://www.digital-circuits.org/sid/
The entire logic of the design is implemented in a small CPLD, no TTL chips where harmed. You can find the VHDL source in the directory. It should be possible to infer the external circuit from the VHDL code. Writes to the SID do have to be buffered indeed - this is done within the CPLD and the HC574. Currently reads from the SID are not possible, but I believe that could be implemented by hacking a little. It appears to be possible read from the sid in an asynchronous fashion..
The code also has initial support for a 256kb flash.
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