Den Fri, 14 Sep 2018 16:13:24 +0200 skrev Gerrit Heitsch <gerrit@laosinh.s.bawue.de>: > On 09/14/2018 03:37 AM, Mia Magnusson wrote: > > Den Thu, 13 Sep 2018 17:15:42 +0200 skrev Gerrit Heitsch > > <gerrit@laosinh.s.bawue.de>: > >> 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. > > > > That depends on how the new IC's are being manufactured. > > Nobody is making NMOS anymore as far as I know. True, but as you can make about any kind of analogue IC today, you can of course make the output drivers have the same electrical properties as the old NMOS IC's had. Also the inputs could have the same properties, but at least the voltage window for high/low is more or less the same for new 5V compatible IC's. Of course it might require a bunch of transistors to emulate the drive capabilities of the old NMOS hardware. But todays manufacturing processes will probably result in that these additional transistors won't have much influence on the end price. -- (\_/) Copy the bunny to your mails to help (O.o) him achieve world domination. (> <) Come join the dark side. /_|_\ We have cookies.Received on 2018-09-15 04:02:54
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