30 Jan
2021
30 Jan
'21
8:51 p.m.
From: Glen Slick
The KDJ11-E 11/93 has PMI signals on the CD
connectors, so you need a
Q/CD backplane
I have this bit set that plugging a PMI card into a Q/Q slot will damage it?
(I think the issue is that some PMI pins are 12V on normal QBUS; too tired
to check tonight, I'll get to it tomorrow.)
Noel
31 Jan
31 Jan
6:05 a.m.
Thanks Noel,
Yes, I tried to repair an 11/34 once after somebody plugged a peripheral
board into a memory slot - I was doing well after 3 or 4 chip chnages,
it started to come to life, until I found the 20V went right into an
d=address line of an in-house numbered ROM!
Having been warned by angels I will take another route!
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.johnson at ieee.org
On 2021-01-30 11:51 p.m., Noel Chiappa via cctalk wrote:
From: Glen
Slick
The KDJ11-E 11/93 has PMI signals on the CD
connectors, so you need a
Q/CD backplane
I have this bit set that plugging a PMI card into a Q/Q slot will damage it?
(I think the issue is that some PMI pins are 12V on normal QBUS; too tired
to check tonight, I'll get to it tomorrow.)
Noel
1426
days inactive
1426
days old
1 comments
2 participants
participants (2)
-
jnc＠mercury.lcs.mit.edu -
nw.johnson＠ieee.org