Hello! smf wrote: > From my understanding of what has been said here: > > Writing to 0 in any bank will cause the 6509 to start executing code in > another bank & there won't be any code there for it. Yes. > The value written to 0/1 in any bank doesn't end up in ram because the > cpu doesn't drive the data bus. Yes. > When I say any bank, I mean using the indirect instructions that let you > access data in a different bank. One thing left to check is that when you are writing to 0/1 using indirect instruction, does the CPU clobber memory in the execution bank or in the bank chosen by register #1 (the latter would be more logical IMHO)? > It also sounds like it's impossible to read location 0/1 of any bank > that the 8088 card has written, because it will always come from the > bank switch registers. Yes. Regards, Michau. Message was sent through the cbm-hackers mailing listReceived on 2018-02-26 11:01:35
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