Re: Microcontroller "PEEKing" into C64 memory?

From: silverdr_at_wfmh.org.pl
Date: Fri, 22 Jan 2016 17:38:06 +0100
Message-Id: <15160715-D978-45C2-A93B-38D9B9FB967C@wfmh.org.pl>
> On 2016-01-22, at 16:15, groepaz@gmx.net wrote:
> 
>>> In any case - as written already - if only PEEKing the locations is
>>> needed, then this isn't even needed at all.
>> Hm? If you want to grab a Byte from the C64 memory, then you still need
>> to take over the bus and unless you don't care about crashes, you need
>> to do it by the book.
> 
> if you actually want to read from the internal RAM .... but if all you want is 
> knowing what was written, you can just connect some latches in parallel and 
> get the value(s) from that instead (for ranges where you get a write enable on 
> the expansion port).

Exactly. Also - to make it even simpler - AFAIR (well - it's been ages ago) I didn't even monitor the R_W - just latched the values whenever address-bus bit pattern matched.

-- 
SD!


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Received on 2016-01-22 17:00:10

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