Do you know the VIC that did not like Cheese and Onion?
http://blog.tynemouthsoftware.co.uk/202 ... onion.html
(mod: split from Cheese and Onion as this post is essentially related to hardware issues)
VR/W timing (split/OT from: Cheese and Onion)
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- polluks
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VR/W timing (split/OT from: Cheese and Onion)
VC20 [WGA103574] + UltiMem
- Mike
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Re: VR/W timing (split/OT from: Cheese and Onion)
The improvement on the timing logic from 2-prong to DIN/CR had been covered in this thread here: "Anyone know what this board mod is?", to quote:polluks wrote:Do you know the VIC that did not like Cheese and Onion?
There's a pull-up for VR/W on the 2-prong mainboard, but it's rather weak.Mike wrote:[...] On the 2-prong, the VR/W signal is simply disconnected from CR/W during VIC fetches, but it is not actively driven to H-level (i.e., read) as in the DIN variant. [...]