Re: Hardware emulation of 6509 using 6502?

From: Michał Pleban <lists_at_michau.name>
Date: Tue, 03 Jul 2018 19:52:52 +0200
Message-ID: <5B3BB7F4.9090003@michau.name>
Jim Brain wrote:

> 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.

How much information can it hold BEFORE the trigger? Because I think the
best place to set the trigger would be the branch where the KERNAL
decides that the memory test is not successful. Then we could look back
and see what happened before - what it was fetching, what it got, what
it was expecting instead, etc.

I will consult the KERNAL disassembly and find this point.

Regards,
Michau.
Received on 2018-07-03 20:02:05

Archive generated by hypermail 2.2.0.