On Mon, May 9, 2016 at 1:51 PM, Kajtár Zsolt <email@example.com> wrote: >> ...leave monitor, do poke 57088,123 and enter the monitor again, you see this: > > Apart from the wrong cycle numbers it's just the regular dummy read for fixing > up the high part of address after indexing. It's expected as it's not optional > for a write. This rings a bell from my days of programming the Apple II... The I/O there, unlike CBM equipment, can be triggered by simply reading a specific address (writing specific values not required, unlike, say, fiddling VIA or CIA register contents). We had to be careful about reads vs writes because of that "double tap". -ethan Message was sent through the cbm-hackers mailing listReceived on 2016-05-10 03:00:03
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