Almost more interesting as the msx quiz... I have a nms8250 which gives black screen.
So that's a nice opportunity to learn something about hardware.
+5v, +12v and -12v voltages are ok.
I've bought a logic probe (BK DP21) and started probing.
The probe blinks on pin 6 of the z80 and pin 8 of vdp, so it seems to be getting a clock signal.
However the probe does not blink on pin 25 (int) Does this mean the vdp is dead ?
That would be a nice opportunity to attempt an msx2+ upgrade ;-)
Also it does not blink on the address and data pins of the z80 but I don't know if it should without int.
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