Memory Error Codes (Model 56 / 57, 76 / 77, 85, and 90 / 95)
PS/2 Memory Errata
Identify SIMMs (Presence Detect and Chip Configuration)
Memory Reference (FRUs, OEM modules...)
Error Handling (Parity, ECC-P, ECC)

Modifying Memory Modules (by Peter Wendt)
   Modifying other Memory Modules for PS/2
   Modifying Memory Modules - Reports

Memory Pinouts
Memory Chip Conversion Chart (between different manufacturers)
Memory Technology Explained (DRAM, SRAM, VRAM, read/write cycles etc.)