2 Aug
2007
2 Aug
'07
3:05 a.m.
Hi Tony,
I did try some other drives, namely some MFM drives
I had to hand from a PDP 11. These were ST-412
drives.
I simply connected the existing PERQ controller to the
new drive, hoping the hard disk would show ready, but
no joy.
The drive didnt even show a flicker on the LED.
The drives were all known working, and boot fine on a
11/23. I didnt change any jumpers as the drives were
the only drive in the PDP 11's.
Could this mean a fault EIO card?
I've examined the board carefully under a maginfier
for
track breaks, dry joints, and damage. The edge
connectors
were cleaned and all IC's have been carefully
re-seated.
Ian.
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