ZX Spectrum 16K/48K

Infobox: ZX Spectrum 16K/48K

Manufacturer	Sinclair Research
Mfg. volume	appx. 4M units
CPU	Z80A @ 3.5MHz
ROM	16kB
RAM	16kB or 48kB
as pages	flat
Gfx Res	256x192
Gfx Colours	15 (2 per 8x8 cell)

Case Design

blah blah Rick Dickinson

Rubber Keyboard Model

blah blah ZX Interface 1 & Microdrives

Plastic Keyboard Model

Spectrum+

blah blah toastrack & QL

Motherboards

blah blah board issues

blah blah reuse of faulty memory chips

Issue 1

blah blah ZX Spectrum 48k ram upgrade

Issue 2

blah blah blue keys

blah blah 48K on-board

Issue 3

blah blah new speaker

blah blah low power ULA, EAR socket changes causing compatibility problems, 'spider' fix integrated into board.

blah blah Spectrum+.

Issue 6

blah blah changes for Saga ULA.

External links

• ZX Spectrum 16K/48K versions at Planet Sinclair