6 Apr
2013
6 Apr
'13
9:20 p.m.
The problem pretty much solved yesterday (Thursday) on Erik's VCF. My
guess is that it simply takes that long for some messages to post.
Is there some kind of automatic link between this mailing ist and the
forum? I wasn't aware of one.
I am not on the forum (AFAIK), if you (and others) expect that all of
us are both on the forum and this list, I have to ask what the point is
of having both. And if I am not jus the only person to be on the mailing
list and not the forum, I think it's hardly suprising that there will be
replies on one that are very similar to replies on the other.
Part in question is the 74S288 bipolar PROM and used in the
Do you know this for a fact, or is it just based o nthe pinout?
write-precomp portion of the 820 FDC board.
Fortunately, the OP managed
to find the reference design for the WD179x.
Right...
Incidentalyl, one machine, I think it was the Rainbow, had a little
state machine using a bipolar PROM and a bit of TTL on the FDC board.
This was not anythign to do with write precompensation. Instead, it
encoded a spare ynchronous serial channel into MFM. This was then sed to
verify the operation of the FDC chip during the POST. NEver seen anyone
else go to those lengths,
-tony