On 7/3/2018 9:37 AM, Michał Pleban wrote: > Jim Brain wrote: > >> Does your exercise both $91 and $b1 opcodes? All I can think is the >> reads are working, but the writes are not. > I just looked at the tests thoroughly and they use both $91 and $B1 > opcodes extensively, so I don't see any obvious reasons why the tests > succeed but the KERNAL memory test fails. > > Is it possible to trace the KERNAL memory test on your logic analyzer? I > mean the exact procedure in KERNAL which writes the value into the RAM > and then reads it back. It would be the fastest way to see what's going > on in the CPU. Though I have a few different logic analyzers (8 channel, 34 channel, etc.), my most useful Logic Analyzer is an older HP 1650B (80 channel, an awesome unit, BTW, for which I did not pay much), which does not have a huge memory. However, it has extensive triggering capabilities. The easiest way to test would be to provide me with the address you want to start the trace at, and I will set that as a trigger. JimReceived on 2018-07-03 20:00:04
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