On 12/01/2012 05:51 PM, firstname.lastname@example.org wrote: > > On 2012-11-27, at 19:35, Spiro Trikaliotis wrote: >> >> Jens advertised his "SuperPLA" >> (http://www.jschoenfeld.com/products/SuperPLA_e.htm. AFAIK, this does >> not use an EPROM, but a chip more suitable for this task. > > Probably for the reasons Gerrit described - EPROM can fail on occasions. I wonder what he used there. I thought it was an EPROM or another small footprint xPROM chip that could be placed on an adapter board with couple of jumpers to select the version for various target systems (one doesn't see it on the photo there) but of course it might be something else. I think I may just ask him ;-) > The SuperPLA uses a CPLD. AMD Mach210 or so. I have one of them in the form of a SuperPLA multi which can be used for different systems (C64, 264, 1551, 8296) depending on jumper setting. Mine is not the current version since the 264 logic terms had a bug that keeps the keyboard from working. Therefore I use it for the C64 only. It works fine in the later boards 250425 and 250466, but tends to cause problems on a 250407 and the 'KU' board, at least as far as I tested it with 'Egde of Disgrace' which crashed with the SuperPLA multi. So even replacing the rather simple 82S100 and MOS's mask programmable derivate with something current isn't as easy as it looks... I still have 2 82S100 that are supposed to be unprogrammed. Looking for someone who can program them for me. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2012-12-01 19:00:05
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