Den Sun, 10 Jun 2018 15:44:10 +0200 skrev Michał Pleban <lists@michau.name>: > Hello! > > Gerrit Heitsch wrote: > > > How about two 6522 instead? With some clever logic and mapping of > > the address bits, you might be able to come up with a register map > > that comes close to what the 6525 has, limiting the amount of > > change in the code. > > That would mean having one more big chip on the PCB, and therefore the > PCB would have to be enlarged and redesigned to accomodate it. > Doeable, but lots of work. I assume the intention is to replace the 8255 and the 6526 with two 6522's. > Also, attaching the 65xx chips to the 8088 feels a little bit kludgey > to me (whit the necessity to generate PHI2, CS and R/W signals with > correct timing). The 8255 looks better in this role IMHO. The Intel chips always looks good until you examine the details ;) ;) ;) -- (\_/) Copy the bunny to your mails to help (O.o) him achieve world domination. (> <) Come join the dark side. /_|_\ We have cookies.Received on 2018-06-12 18:02:36
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