IBM 5162 - Motherboard Diagrams
IBM's technical reference for the IBM 5162 contains a lot of diagrams.
Following are some motherboard related diagrams that I have created.
Reset flow
Clock generation
Relationship between CPU/NPU internal clocks
BIOS ROM chips U34/U35 - Diagram 1
BIOS ROM chips U34/U35 - Diagram 2
Keyboard controller chip ( photo )
A20 gate
Bit Breakdown of Motherboard RAM