Repair/Restoration Part 2: ZX81 Ram Pack, Composit Mod & Internal 16K Upgrade
30:42
Repair/Restoration Part 1: 2 x ZX81 and a Happy 40th Anniversary!
22:53
Sinclair ZX81 Spruce Up (Composite, 16K, Keyboard & More!)
16:04
Sinclair ZX81 Upgrades. Composite mod, 16K Internal RAM. Part 1
29:15
ZX-81 architecture overview and repair, mod and upgrade plan (Pimp My Eight, episode 4, part 1)
12:56
ZX 16K RAM expansion explained
19:27
ZX81 repair
25:59
Sinclair ZX81 Internal 16KB RAM Upgrade (Reversible)
13:00