On Mon, 29 Jul 2002 14:02:33 -0700, Zonn <zonn@zonn.com> wrote:
>>Anyone done any research on these towards developing a replacement chip?
>
>If it helps, we've designed a replacement circuit for the MC1495 pincushion
>correction circuit. It uses the LM13700 as the 4 quadrant multiplier and seems
>to work rather well. It replaces two MC1495's with one LM13700 and a dual op
>amp (TL082), and corrects for 1 axis (which is all that Atari corrected for,
>since there aren't any monitors that need Y pincushioning correction.)
>
>It's a start, and LM13700s are readily available.
Just to clarify, I'm not currently working on a Sega custom chip replacement,
but if anyone is interested in the above circuit, let me know.
-Zonn
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Received on Mon Jul 29 16:14:04 2002
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