Bob's Stuff edit / delete

A collection of very impressive modern games for the ZX81 and Spectrum. Includes several with novel approaches to graphics -- e.g. isometric 3D on the ZX81, and coloured ASCII art on the Spectrum.

to games retrocomputing sinclair software spectrum zx81 ... on 26 February | Welcome! edit / delete

New Spectrum hardware, including new PCBs using 74HC chips (i.e. no ULA) based on Chris Smith's work.

to electronics retrocomputing sinclair spectrum ... on 27 November 2016

Sinclair Radionics - an inside view edit / delete

"I worked for Sinclair Radionics for the above period, being the second engineer employed by Clive. The first was Jim Westood. These are some recollections, both technical and anecdotal, and data from that period." i.e. this is Sinclair in their pre-digital period -- hifi amplifiers and the like.

to audio electronics hifi retrotech sinclair ... on 18 October 2016

requesting Sinclair X-20, X-10 information - diyAudio edit / delete

Schematics for Sinclair's PWM amplifiers.

to amplifier audio electronics sinclair ... on 21 June 2016

Toddy Software edit / delete

"In this page, I am offering my achievements in terms of software for the ZX81. These are programs that I developed and others that I just modified to incorporate new features such as AY sound or characters redefinition." Includes a high-performance FORTH.

to forth retrocomputing sinclair software zx81 ... on 24 June 2015

ZX Resource Centre - Sinclair ZX Interface 2, ZX Spectrum 128 and ZX80 edit / delete

Various ZX80/81/Spectrum mods, including RGB output. There's lots of interesting information here but the wacky navigational structure makes it hard to find...

to electronics retrocomputing rgb sinclair spectrum video zx80 zx81 ... on 05 March 2015

ZX81 RULES OK! edit / delete

"Here you will find a collection of articles of enhancements for the ZX81 Personal Computer."

to electronics retrocomputing sinclair z80 zx81 ... on 05 March 2015

ZX81 Emulator edit / delete

But not just any ZX81 emulator: a command-line one. This lets you use ZX81 BASIC as a scripting language. The examples include CGI scripts written in it... (A better use might be to drive 1K Chess from xboard.)

to basic cgi cute-code retrocomputing sinclair zx81 ... on 20 January 2015

Tynemouth Software: ZX81 internal 16K RAM edit / delete

How to fit a 62128/62256 to a ZX81. I wonder if I've got one that still has a working keyboard matrix...

to electronics ram retrocomputing sinclair zx81 ... on 24 July 2014 edit / delete

Comprehensive Russian ZX Spectrum site -- lots of information. (Presumably more useful if you can read Russian.)

to clone retrocomputing russia sinclair spectrum ... on 28 April 2014

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