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Forums > CSDb Discussions > Best VIC Chip to get?
2018-11-16 14:30
dano

Registered: Jul 2004
Posts: 164
Best VIC Chip to get?

..aka is there a best of both worlds variant around?

Currently i again stumbled upon Ilesj's image upon VIC II lumas.

As for now i have an old VIC II in my C64 Reloaded, just because i want to avoid those grey dots/stripes opon rastercolor changes.

To my knowledge old VIC doesn't have those, but only has 3 lumas - whereas the new VIC has the grey dots problem, but 7 lumas.

So hardware gurus, what's your or what is know to be the BEST VIC around?

Afaik there's no new VIC without grey dots?

So, get an old R3 or old R5? Or get a specific new VIC revision?
2018-11-16 14:46
Groepaz

Registered: Dec 2001
Posts: 8920
only the 6569R1 VIC has 5 (not 3) lumas. it's unlikely you even find one :) R3 vs R5 shouldnt matter much, the colors are slightly different perhaps.
2018-11-16 17:35
tlr

Registered: Sep 2003
Posts: 1198
Yes, the R1 is quite different. In addition to the fewer lumas it also has a bug with the lightpen interrupt logic. I think that will break any attemps at stable rasters using the lightpen trigger method. The higher revisions do not seem to have any major discrepancies as far as I have seen. It could be just tweaks for better yield perhaps.
2018-11-16 19:07
Walt

Registered: May 2004
Posts: 9
If you use Reloaded MK2, make sure to update firmware.

I had some issues with strange colors regardless of using the older or newer 6569 (ceramic or plastic) and it was solved when updating firmware (detection was apparently wrong).

Afterwards picture was worst using the ceramic version.

/Walt
2018-11-16 19:12
Groepaz

Registered: Dec 2001
Posts: 8920
ceramic would be R1, so no surprises there, it has worst picture (also gets very hot)
2018-11-16 21:13
dano

Registered: Jul 2004
Posts: 164
Weasel and i have been testing some VICs at his place with my ReloadedMK2. Ofcourse with the current firmware. There were some differences with the old VICs, not major, just minor. I guess those were R3s and R5s.

Still i would prefer to have a new VIC in, but those nasty grey dots.. Sigh..
2018-11-17 11:44
tlr

Registered: Sep 2003
Posts: 1198
Quoting dano
Weasel and i have been testing some VICs at his place with my ReloadedMK2. Ofcourse with the current firmware. There were some differences with the old VICs, not major, just minor. I guess those were R3s and R5s.

Interesting! What differences did you see?
2018-11-17 11:45
Groepaz

Registered: Dec 2001
Posts: 8920
one has that purplish blue that ppl love to whine about and the other doesnt :=)
2018-11-17 13:42
WVL

Registered: Mar 2002
Posts: 841
Met ceramic VIC has 7 lumas for sure.
2018-11-17 15:28
tlr

Registered: Sep 2003
Posts: 1198
Quote: one has that purplish blue that ppl love to whine about and the other doesnt :=)

I was hoping for some logical/behavioural differences. Purple and blue seems more like your domain. ;)
2018-11-17 19:27
dano

Registered: Jul 2004
Posts: 164
Quote: Quoting dano
Weasel and i have been testing some VICs at his place with my ReloadedMK2. Ofcourse with the current firmware. There were some differences with the old VICs, not major, just minor. I guess those were R3s and R5s.

Interesting! What differences did you see?


Maybe some minor differences in color. Nothing i could totally put a finger on. Some seemed cleaner in picture than others. I should have taken pictures back then. In the end it was some A-B testing which picture we liked better. Sort of. So it was mostly a spread in manufacturing..

I wished there was something like "get exactly THIS revision, it's totally the best picture you can get".
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