Re: Theorizing: what can be done with DOT clock signal present on C64 expansion port?

From: Claudio Sánchez <tokafondo_at_gmail.com>
Date: Sat, 6 Nov 2021 20:19:16 +0000
Message-ID: <6e37ea0f-d3de-775e-3cde-65d413caf5e4_at_gmail.com>
> On 11/6/21 6:55 PM, Claudio Sánchez wrote:
>>> If you can find a chip that needs 7.88mhz on pal and 8.18mhz on ntsc
>>> then sure, but you're then just using the DOT clock as a cheap way of
>>> getting a clock.
>>
>> Well... at first it is. It's a cheap way of getting a clock.
>>
>> phi2 pin is AFAIK a copy of what the 6510 gives out to the rest of the system, so when the 6510 gets halted by the VIC-II... is phi2 affected?
> 
> No, the 6510 gets halted by the RDY pin, clock is not affected.
> 
>   Gerrit
> 
> 

Yes, so the fact that the VIC-II asks the 6510 to stop doesn't mean that when the latter is halted, its phi2 output also gets halted, or is it?
Received on 2021-11-07 05:00:04

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