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Tynemouth Software: ZX81 internal 16K RAM
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
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
HellZXcreiber • Hackaday Projects
Hellschreiber receiver for the Spectrum, using the tape interface. Presumably you could do a transmitter as well with minimal hardware...
to amateur hellschreiber radio retrocomputing sinclair spectrum ... on 27 April 2014
Reversing Sinclair's amazing 1974 calculator hack - half the ROM of the HP-35
Most impressive. I don't have one of these...
to calculator retrocomputing reverse-engineering rpn sinclair ... on 03 September 2013
Typography in 8 bits: System fonts » DamienG
Comparison of system fonts from 8-bit machines. (I like the Amstrad CPC one, although the BBC one's probably cleaner overall.)
to acorn amstrad apple fonts retrocomputing sinclair typography ... on 14 August 2013
DIY ZX80, ZX81, Jupiter Ace, UK101, etc.
to ace electronics jupiter retrocomputing sinclair uk101 zx80 zx81 ... on 31 October 2012
Assorted ZX81 addons -- hires graphics, dynamic clock speed switching, etc.
to electronics retrocomputing sinclair zx81 ... on 31 October 2012
BBC Micro on an FPGA | mikestirling.co.uk
BBC and Spectrum implementations on an FPGA board.
to acorn bbc fpga retrocomputing sinclair spectrum ... on 23 August 2011
A remake, in Python, of iconic Spectrum games Skool Daze, Back to Skool and (slightly less iconic) Contact Sam Cruise. With comprehensive disassemblies of all the games, which are surprisingly complex.
to games python retrocomputing sinclair software spectrum z80 ... on 17 July 2011
Assorted QL software, including serial communication tools.
to ql retrocomputing sinclair software ... on 15 May 2011
« earlier | later » Page 2 of 4
| - sinclair | |
| 1 | ace |
| 2 | acorn |
| 1 | amateur |
| 1 | amplifier |
| 1 | amstrad |
| 1 | apple |
| 2 | audio |
| 1 | basic |
| 1 | bbc |
| 1 | c5 |
| 1 | calculator |
| 1 | cgi |
| 1 | clone |
| 1 | cute-code |
| 11 | electronics |
| 1 | emulator |
| 1 | ethernet |
| 1 | fonts |
| 1 | forth |
| 2 | fpga |
| 3 | games |
| 1 | hellschreiber |
| 1 | hifi |
| 1 | jupiter |
| 1 | microprocessor |
| 1 | nbtv |
| 1 | networking |
| 1 | obviously |
| 1 | pentagon |
| 1 | python |
| 4 | ql |
| 2 | radio |
| 1 | ram |
| 1 | repair |
| 27 | retrocomputing |
| 2 | retrotech |
| 1 | reverse-engineering |
| 1 | rgb |
| 1 | rpn |
| 1 | russia |
| 1 | scmp |
| 1 | scorpion |
| 30 | sinclair |
| 7 | software |
| 13 | spectrum |
| 1 | technics |
| 1 | teletext |
| 1 | turntable |
| 1 | tv |
| 1 | typography |
| 1 | uk101 |
| 1 | video |
| 3 | z80 |
| 2 | zx80 |
| 8 | zx81 |
tasty by Adam Sampson.