On 9/4/22 21:19, silverdr_at_srebrnysen.com wrote: > > >> On 2022-09-04, at 15:45, Gerrit Heitsch <gerrit_at_laosinh.s.bawue.de> wrote: >> >>>>> ... but other than that? >>>> >>>> Unless you are talking about a 14 MHz version. >>> No, I don't need higher clock frequencies >>>> what's wrong with the original one then? >>> 1) they aren't officially available[*] so one has to count on some rather dubious sources, which sell "NOS"[**] ones, and 2) its DIP "footprint" is imposing limits I'm not too happy with >>> * - unless I am missing a reliable source with some stock and reasonable prices >> >> Have you tried https://www.unicornelectronics.com/index.htm > > No, I haven't yet. > >> They list the NMOS-6502 at OK prices under >> >> https://www.unicornelectronics.com/IC/6500.html > > Prices look OK for one or a few. Not so much for a production batch. I am not sure if BOM for a PLD capable of implementing it wouldn't be less expensive. Possibly... But would that also cover the illegal Opcodes correctly? From what I understand, those are side effects of the NMOS implementation. GerritReceived on 2022-09-04 22:03:01
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