Re: Switchless ROMs

From: smf <smf_at_null.net>
Date: Thu, 29 Dec 2016 20:02:20 +0000
Message-ID: <3f908187-9d7c-8af9-6099-ff93debe0030@null.net>
On 29/12/2016 18:45, David Wood wrote:

> Is it possible to detect a delay without a clock?  I suppose this is also
> not infallible since accelerators could trigger it.

It depends on whether the cpu could be stopped when fetching the vector 
by dma (especially a vic bad line, but 8 sprites would do it too). If it 
can then there is nothing to differentiate between a delayed reset and 
the cpu just doing an lda $fffd lda $fffc from ram.


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Received on 2016-12-29 21:00:02

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