Sunday, December 6, 2015

PDP 11/23 system 768K (256K + 512K) memory, cables

New arrival.  Blown mains fuse, and some investigating to do.

8 slot backplane chassis, H768 power supply module

Dec board chips Mostek MK4564N-150
M8067 512K Qbus board, populated to 256K

National Semiconductors memory board
Populated to 512k
Bitsavers National Semi NS23

Memory array on National Semiconductors board.  MC4164

 M8189 processor board

KDF11 BA (4high) processor

M8189 processor board switchs

Manual page 26, 2-2

Connector block on M8189 processor board

Power panel

H786 Power supply

H786 power supply

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