On 09/13/2018 12:02 AM, Mia Magnusson wrote: > Den Wed, 12 Sep 2018 21:56:06 +0200 skrev didier derny > <didier@aida.org>: >> for me it would be like a sheep with 5 legs... >> >> if I want a 6502 / z80 or 68000 I take a real one.... >> >> if I want something modern I take an avr, or an arm.... >> >> >> I would find replacement for: 6530 / 6560 / 6561 / 6581.... more >> interesting... > > 6530, 6532, 6526, 6525 and 6523 would be rather simple to implement and > it might even be possible to do all in one chip, with some preprogram > thing to choose which of them it should be. Unfortunatly that's not the case. Those chips are NMOS. With their output drivers you can do things (and they were done) that you at least shouldn't do with CMOS drivers. GerritReceived on 2018-09-13 18:02:17
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