FPGA VAX update

woodelf bfranchuk at jetnet.ab.ca
Sat Nov 5 00:27:15 CST 2005

Chuck Guzis wrote:

>On 11/5/2005 at 1:09 AM ard at p850ug1.demon.co.uk wrote:
>>Waht somebody needs to do (and it can't be me for obvious reasons) is to 
>>select some CPLDs/FPGAs where the download protocol is documented (that 
>>is, you can progam the chip, given the binary file, without a proprietary 
>>programmer), and use the tools (that's why it can't be me) to make some 
>>useful logic functions -- things like an <n> bit universal shift 
>>register, <n> bit ALU, counters, even JK flip-flops, gates, etc. Make the 
>>binary files available for free download.
>Hey, nobody did it with PALs, why would they do it with something more
Yes I think you can still do that with the orginal  PAL's that they 
don't make.  If  I remember
right the early pals were programmed as 512x8 fuse roms. The fuse map 
was a one-to-one  mapping
as you have with the logic diagram.  The  Cypress semiconductor data  
book has  programing information
on their PAL's  but the data book is from the 90's.

More information about the cctalk mailing list