Or input multiplexers for video ram has shorted inputs.
However, since it's not doing that always as the signal appear to get "normal", I don't know...
Hi Dave,
the version of the RAM/ROM board that he have, only access the original PET bus from $E800 to $E8FF. ROMs can be selected in 4K ranges (for...
The good thing about 6502 ML is the conditional jumps don't need any relocation. If all JMP/JSR are labeled, you just change .org directive, add the...
Ok so first of all: what kind of 1541 is it? So we look at the right schematic?
First of all, disconnect the serial cable from the 1541, power it on...
It would be interesting to see what's actually happening, if you could make a small video, it would surely help.
As for dropping into the monitor at...
hmm weird, CLK8 as far as I remember, goes only to pin 2 of UE11, it's the "dot clock" to shift out the character generator dots on each scanned row....
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