FPGA Raises Component Video From A Sinclair ZX Spectrum | Hackaday
ZX Spectrum 4116 RAM Replacement Board - Part 1
external 128kB upgrade
ZX Spectrum 16K to 48K memory upgrade kit | ByteDelight.com
Tynemouth Software: A ZX Spectrum with 80K of RAM?
Sinclair ZX Spectrum RAM Repair (Upper RAM) - YouTube
Chips
Shared Memory Dump
ZX Spectrum - Wikipedia
Chips
32K RAM Module for Issue 1 Spectrums Bare PCB - Sinclair ZX Spectrum | eBay
Repairing and upgrading ZX Spectrum 16K – Ask Notes
L Break Into Program - ZX Spectrum Memory Map
Upgrading a 16K Spectrum to 48K - Spectrum for Everyone
ZX Spectrum +2 Repair and RAM test, how to. - YouTube
ZX Spectrum Lower RAM Replacement Module - zx.zigg.net
ZX Spectrum Lower RAM Replacement Module V1.3 For Issue 2 - 6 PCBs
RAM Turbo Add-on for the Sinclair ZX Spectrum Computer
Z80SRAM - RAM / Z80 CPU replacement module for ZX Spectrum | eBay
New old stock 8x 4116 RAM chips | ByteDelight.com
ZX Spectrum - Upper RAM Fault Diagnosis and Repair - YouTube
