Hello! smf wrote: > and the last value that appeared on the databus before will get written > to ram. see here: Oh you are right, I got confused here. It's the last value on the bus that is written to the RAM, not the I/O value. So it's a problem, and I think it can't be overcome - the relevant pins of the CPU are not connected anywhere, except the P0 pin which goes to the expansion port. But this single pin will not be enough. OK, it was a good idea while it lasted :-) Regards, Michau. > * > > https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/general/ram0001/ > > > I thought the 6509 was the same, which was that it didn't drive the data > bus either & Jim had decided to reproduce this on his newer 6509 > replacement board. > >Received on 2018-05-22 16:00:07
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