I'm quite excited to hereby introduce fist prototype of SIMM RAM 30pin 4MB x 9 with parity. This is 4 layer PCB - if it works -> then redesign to 2 layers
SM864EU001 Smart Modular 64MB EDO 72-Pin SIMM Memory Module
16MB 4x 4MB 30pin SIMM RAM MEMORY without parity 4x8 30-pin Apple Mac PC - Walmart.com
Nibble Size: Let's make some memories! - YouTube
NI532014081XXS7: Major Brands : 4MB DRAM Module 70ns 72-Pin SIMM EDO-RAM Non-Parity SMART : ICs & Semiconductors
72-Pin Memory SIMM Module – Apple Rescue of Denver