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kefkafloyd's latest activity
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kefkafloyd
replied to the thread
LC520 Overclock
.
I am curious what a transistor and a jumper in line would be used for. I'm no board expert but vestigial R80 seems right.
Oct 14, 2025
kefkafloyd
replied to the thread
LC520 Overclock
.
Thanks for the info. I could not recall what your tests with previous mods were, so this is helpful information. The stock CC board not...
Oct 14, 2025
kefkafloyd
replied to the thread
LC520 Overclock
.
Of note, there's another way to identify boards: their serial schemas. I've noticed two different schemas for 520s: EZxxxxxxDY7 and...
Oct 14, 2025
kefkafloyd
replied to the thread
LC520 Overclock
.
I believe on these machines the Gestalt is determined from some combination of CPU speed and sense pin detection on the machine's logic...
Oct 13, 2025
kefkafloyd
replied to the thread
LC520 Overclock
.
I can also confirm that R80 is missing on my Rev A LC550 logic board for another data point. No idea if R80 is populated on a Rev B...
Oct 13, 2025
kefkafloyd
replied to the thread
Color Classic Resolution Switching
.
Thanks for that video! The slight syncing differences between the CC and 520 boards (66.6 for the CC vs 66.7 for the LC 520/575) make...
Sep 9, 2025
kefkafloyd
replied to the thread
Color Classic Resolution Switching
.
I believe it should look similar to the LC 575 board with IIe card in terms of borders/geometry, but I'm curious about the refresh rate...
Sep 9, 2025
kefkafloyd
replied to the thread
Color Classic Resolution Switching
.
@JDW, That's interesting. I assumed that a CC stock board to behave the same as a Mac TV/520/550/575 board in terms of standard Mac...
Sep 8, 2025
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