danboid
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I could give that a go. I have found OSSC fw versions 0.26, 0.27, 0.28 and 0.81 over at
http://www.infocult.com/m/ossc/fw/
Which version would you recommend I try? Which firmware version added the additional sync processing?
I have tried Output options -> 240p/288p proc -> Passthru as well as Output options -> Passthru mode -> 256×240 optim and Output options -> Passthru mode -> Normal and Output options -> Passthru mode -> High samplerate amongst several other output options and the green LED keeps turning off every few seconds in all cases.
Jubatian wrote the bootloader for the Uzebox and he’s also written some of the most capable video modes for the Uzebox. He owns an OSSC and pretty much every version of the Uzebox. He had this to say:
Hi Dan,
Similar experiences here with the OSSC, usually it works, sometimes a
little intermittent, I couldn’t much see any relation with what was
running (as long as it had good signal as far as cuzebox reports).But with me there is also that my Scart cables are crap :p
Rambling ON:
There isn’t anything special with Flight of a Dragon, maybe the only
thing is that Mode 74’s pixel clock is equivalent to an NTSC C64’s
(Multicolour mode), if possibly the OSSC might be trying to figure out
some common pixel clock.Uzebox’s most common modes (Mode 3) use 6 clocks / pixel, which I think
wasn’t ever used in any 80’s machine or console. Would feel it very
unlikely to be an issue as I don’t see much point in trying to figure
out some pixel clock, but there might be a very remote possibility that
it might be less liked.(The NES is a bit bonkers, its pixels are around equivalent to 5.33
Uzebox clocks wide, and in general it just isn’t even using clocks which
would be suited for standard NTSC. Even the colorburst is wonky. Yet, it
is a thing, and the OSSC should be supporting an RGB modded NES with its
nonstandard timing)Rambling OFF.
What I could think of might be clock stability, some ATmegas like less
running with a nearly 50% overclock (driving a crystal they weren’t
designed for – here also how well the components around the oscillator
are soldered might possibly matter).No better idea, sorry!
Jubatian
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This reply was modified 10 months, 1 week ago by
danboid.
Thanks for your reply Matt!
I’ve had some success with IKD by increasing the hsync tolerance from 0.92 to around 1.5 and setting ADC PLL BW to Ultra low both seemed to help IKD but I haven’t found settings that give me uninterrupted play for Donkey Kong yet.
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This reply was modified 10 months, 1 week ago by
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