Good haul of old pc stuph

[Tony Duell]

> (I say that and, looking at my CGA card in graphics mode, there are single-bit 
> errors twitching on and off -- RAM tests okay so I guess the ramdac has blown a 
> gasket somewhere)

RAMDAC? On a CGA card? Surely you jest...

More seriously, this could be a timing problem in one of the latches, 
etc, between the RAM and the video output connector. I don't have the 
schematic in front of me, but I can look it up if you're interested.

No, correct that. You have the card. You have a multimeter. Stop stealing 
my time and trace the circuit yourself (well, that's what you told me to 
do about writing programs).

> > capacitor in parallel with the head significantly reduced it.
> 
> You wrote "fix" earlier... "reduce" makes more sense.

It reduces the amplitude of the glitch to such a level that it no longer 
damages the tape. In that sense it fixes the problem (of damaged tapes 
when the recorder is stopped in play mode).

-tony