Re: 1351 mouse and the VIC20

On Thursday 27 April 2017, 00:11:18 Jim Brain <brain@jbrain.com> wrote:
> On 4/26/2017 9:46 PM, groepaz@gmx.net wrote:
> > hy!
> > 
> > i am currently trying to somehow make a mouse work on the vic20, and while
> > doing that i wondered why a 1351 would not work _at all_ - ie the paddle
> > values would not change at all. that indicates that the ADC in the VIC
> > works fundamently differently to what the SID does - does anyone have an
> > idea what exactly that would be?
> 
> I remember working on my PSXJoy AVR code to support the VIC-20, and as I
> recall, the VIC-I uses a 1024 cycle sampling period, but I believe it
> only counts for 256 cycles.

mmmh there must be something else that is different - if that'd be the only 
difference the 1351 should still produce *some* values, right?

-- 

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<Linus Torvalds>



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