IBM 5160 - Motherboard Diagrams
IBM's technical reference for the IBM 5160 contains a lot of diagrams.
Following are some motherboard related diagrams that I have created.
Reset flow
Clock generation
NMI generation
Data bus - Simplified
Address bus - Simplified
Speaker circuitry - Simplified
Memory layout of BIOS and BASIC
Possible use of speaker connector for digital input
Digital output via pin PB2 of the 8255 chip
RAM parity generation and comparison
Keyboard interface circuitry
Generation of CS for U18 ROM
64-256KB motherboard - RAS CAS delay