@byuu_san might also be interested. Pretty sure you could simultaneously probe ~every bus on a SNES.
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I think
@gekkio might have something like this for the DMG.2 replies 0 retweets 1 like -
Yeah my test bench is a simple version of something like this. 5V signals are annoying and are the reason why I don't use a beefy FPGA
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One of these days I’ll lrn2fpga I swear
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I have a small iCEStick or something like that that
@gewt lent me that I’ve been planning to use for a DMG screen recording/key replay setup1 reply 0 retweets 0 likes -
Unfooooortunately I killed one of the lines for keys on the DMG I was toying with so I’ll need another one. B/Left are now permanently low!
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Simple screen recording seems like a good first project for this. I want to investigate some stuff I saw on a DMG -> oscope setup:
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The DMG turns off the dot clock while compositing OBJs onto the BG and during the SCX prefix, giving it extra time to do these operations.
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Seems to be related to why the timing with OBJ and SCX is odd, especially with OBJ stuff.
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Oh that is cute. I once (long time ago) tried to hook up a GBP to a CRT screen. Didn't quite work out due to hsync mismatch.
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Seeing those stall cycles on the scope screen is cool. Could be fixed by using a binary counter → R2R DAC driven by dotclock as H input.
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awwwwwww
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