Almost forgot to comment that there was once a Soviet copy of the 82S100 / PLS100 (--> KR556RT2), which seems to be available from eBay sellers today. ...While that might sound bizarre, and is AFAIK also a completely untested route in spite of a prospective Commodore PLA replacement (...who knows if all the original specs of the 82S100 have been kept at the first place), it might have some potential. The chips (new old stock) currently sell for some $7.5 + p&p / 5 pieces... which is around the price of the cheapest PLS100 chip I could find (a piece, that is). Personally, I have no serious doubts about the general reliability of (post-) Soviet chips. The risk of running into counterfeits while shopping for NOS KR556RT2 chips should be also really small I guess... ;-))) On 2019. 07. 27. 18:03, Pete Rittwage wrote: > On 2019-07-27 11:10, silverdr_at_wfmh.org.pl wrote: >>> On 2019-07-27, at 16:31, Gerrit Heitsch <gerrit_at_laosinh.s.bawue.de> >>> wrote: >>> >>> On 7/27/19 4:19 PM, silverdr_at_wfmh.org.pl wrote: >>>> Seems that with today's repair I ran out of my once "lifetime stock" >>>> of PLAs. Anyone willing to part with a few? Yeah, I know it's a long >>>> shot… >>> >>> Try to find some unprogrammed PLS100, there are people who can >>> program those and you will have the original PLA again. :) >> >> Ordered some – hopefully working, unprogrammed ones. Now who / what >> can program those? I remember we had a thread here, where Ruud and >> Francesco wanted to do something about programming those chips but >> don't know the eventual outcome. Any success out there, guys? > > I think you have to have a really old PROM programmer (and of course > subsequently really old computer to run it). I have not seem any modern > tool to do this, although maybe someone has come up with a homebrew > method. It's quite a pain with the voltages needed. > > http://www.vcfed.org/forum/showthread.php?65484-How-to-program-a-82S100-PLS100 > > >Received on 2020-05-29 22:16:41
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