Posted By
Spektro
on 2025-09-25
04:14:30
 |  VIC-II extension
There are SID sound extensions for the Plus/4 but has anyone ever made or tried to make a video extension for the Plus/4 using a C64's VIC-II chip?
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Posted By
gerliczer
on 2025-09-25
07:36:05
| Re: VIC-II extension
Should I start listing the severe hurdles making that endeavour almost impossible?
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Posted By
siz
on 2025-09-25
08:27:18
| Re: VIC-II extension
I'm not sure it's even possible. both TED and VIC-II tries to control the buses to read video data from the RAM and do RAM refresh. The only possible way I can imagine is the VIC-II having it's own RAM(s - both for video data and color memory) and allow that RAM written in parallel with the main plus/4 RAM. and then we still have the issue of different clock frequencies for the VIC-II and TED bus accesses.
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Posted By
orac81
on 2025-09-25
11:19:12
| Re: VIC-II extension
Probably easier just to put a C64 board in a C16 case!
Otherwise, yes a complete sub system with a processor and a way to transfer data.
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