Could you have replaced the memory chips on the Apple 2C with larger chips to give it 512K? - Quora
Dynamic RAM Design & Interfacing - TIMING CONSIDERATIONS
Dynamic RAM Design & Interfacing - TIMING CONSIDERATIONS
681000 128Kx8 CMOS RAM - Datasheet
DRAM Tester for 64k x 1 4164 and 4864 RAM - Share Project - PCBWay
Repairing and upgrading ZX Spectrum 16K – Ask Notes
6264 - Wikipedia
KM4164B Datasheet(PDF) - Samsung semiconductor
RAM - Chips / ICs / Sockets / Adapters - Circuit Components
Testing 4116 RAM ICs | Damian McMillan
41256 – My old computer
RAM - C64-Wiki
6264 8Kx8 120ns CMOS RAM - Datasheet
RAM Info and Cross Reference Page – pcbjunkie.net
DRAM Tester for 64k x 1 4164 and 4864 RAM - Share Project - PCBWay
Testing 4116 RAM ICs | Damian McMillan
Memory Data
ram - Why did 1-bit DRAM chips have separate data input and output? - Retrocomputing Stack Exchange
L Break Into Program - ZX Spectrum RAM
Replacing 4116 ram with 4164 for reliability - TI-99/4A Computers - AtariAge Forums
RAM - Chips / ICs / Sockets / Adapters - Circuit Components
4164 64k Video RAM - Datasheet
RAM Info and Cross Reference Page – pcbjunkie.net
TMS4164 | PDF
C128 16×4164 to 4×4464 modification how? - Commodore 64 - Lemon64 - Commodore 64
4164pinout.gif
