30 Jun
2004
30 Jun
'04
1:08 a.m.
At 02:48 PM 6/28/2004, you wrote:
All the KDF11B (M8189) boards have 24pin sockets.
They used Motorola MCM68766 8Kx8 24 pin eproms.
The MicroPDP 11 (vs 11/23+) DEC EPROM numbers I know of are:
183E4/184E4 - KDF11-BE
380E4/381E4 - KDF11-BH
453E4/454E4 - KDF11-BJ
All have DU boot, the latter has an MU boot as well.
I have a set of the 183E4/184E4 EPROMs with DU boot for KDF11-B, M8189
modules that I'd trade for an RQDX3.
Ed Kelleher
Columbia, SC
I have a
KDF-11B (that's the quad sized PDP-11/23+ CPU with onboard
serial ports and bootstrap/terminator) that's too old to know how to
boot from MSCP (e.g. RQDX/RD5x) drives. I know later versions of
this
board could do that and I was planning to just
upgrade the EPROMs on
my
board, but all the later EPROM images are 8K
bytes - my board has
only
2K (2716) 24 pin EPROMS. There's no way (at
least no simple way) to
install 8K 28pin EPROMs. Actually, the EPROM sockets on my board are
so
close together that I don't think I could get
28 pin devices to fit
even
> if I did "flying leads" for the extra 4 pins.
>