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chatGPZ
Registered: Dec 2001
Posts: 11386 |
VSP Hardware fix revealed
click here
Many thanks to everyone involved. HAVE FUN! |
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MagerValp
Registered: Dec 2001
Posts: 1078 |
This is awesome, thank you! |
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White Flame
Registered: Sep 2002
Posts: 136 |
Such a simple solution to such a long-standing nuisance!
As somebody whose machines are already VSP compatible, I hope this helps make more real hardware compatible as well. |
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ChristopherJam
Registered: Aug 2004
Posts: 1409 |
Excellent, great to see. |
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CreaMD
Registered: Dec 2001
Posts: 3057 |
Revolutionary. Someone could maybe make a youtube tutorial / video? |
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AmiDog
Registered: Mar 2003
Posts: 97 |
Ok. Time for some stupid (?) questions. The point of the fix is to prevent the VIC from changing the address lines when it shouldn't, right?
So why is the fix applied "just before the address lines are fed into the RAM chips"?
Wouldn't it be possible to apply the fix at the VIC end instead? By creating a small board which you fit between the VIC and the VIC socket on the motherboard? I guess not since the page says "a fix would not work nicely as a customer-installable product", and installing such a board would be no harder than installing a 64KB VDC-ram board in a C128 for example. |
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AlexC
Registered: Jan 2008
Posts: 299 |
Awesome! Is there anywhere a list of releases using VSP? |
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ready.
Registered: Feb 2003
Posts: 441 |
other option would be to insert the board in between U13 and U25 (the two 257 MUX chips) and their sockets. |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
AmiDog: you can bet on that if such simple adapter solution would be possible, jens would have made a product out of it :)
"Is there anywhere a list of releases using VSP?"
ugh, no. that'd be a huge list =) however, the problem even exists for programs that dont actually use VSP, but simply switch $d011 without synchronizing to the beam - which may or may not trigger the bug (with a roughly 1:312 chance) |
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Bob
Registered: Nov 2002
Posts: 71 |
\o/ I can go hay wire on VSP now.. no limitations \o/ |
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Oswald
Registered: Apr 2002
Posts: 5094 |
Quote: Awesome! Is there anywhere a list of releases using VSP?
not until csdb implements tags :) |
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