Retro Coding
A personal collection of programmable retro computers, largely from the 1980s and 1990s, along with some bits of code.
Most of the computers are from the 1980s when I started coding, mainly Sinclair and Acorn BBC machines. I've also collected more from the 1990s, mainly Psion Organisers, some of which I used quite a bit in their day, and others which I would have liked to own at the time.
While not an electronics engineer, I will have a go at mending many things and have had some success with BBC Model B and Master 128 and have brought a lot of Psion Series 3 organisers back to life too. You'll find some theres adventures in the Blog, and on Twitter.
Still to be added are my Psion Organiser II, another couple of Sharp handhelds, two Casio computers and my Acorns: Electron, BBC Model B and Master 128, as well as few peripherals and a reasonable collection of books.
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The ZX81 was the successor to the ZX80, still based on the Zilog Z80A but with 8K ROM rather than 4K, and the same 1K RAM. The biggest technical difference was the integration of many of the ICs into one component, which reduced the chip count and the cost, starting at £49.95 for a kit, and £69.95 for a ready-built machine.
