Re: Test suite for 6509 processor

From: Michał Pleban <lists_at_michau.name>
Date: Mon, 26 Feb 2018 11:48:59 +0100
Message-ID: <5A93E61B.5090703@michau.name>
Hello!

Mia Magnusson wrote:

> Godd! Now we know how the 6509 works. Do we want to emulate this
> beahviour or would we rather have it not write to external memory (or
> maybe always write to the same bank)? :)

I can't imagine any code using this kind of functionality (it would
require the 8088 processor anyway) so we can safely omit it, and either
do not write anything, or write the actual data being written to the
register.

The only thing we cannot do is to write to the memory in another bank
than the current execution bank, because that would clobber the RAM.

> I would had assumed previous cycle, not previous instruction, right?

Yes, previous cycle of course.

Regards,
Michau.

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Received on 2018-02-26 11:00:55

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