*** M E M O R U M ***

I've recently spotted several interesting Homebrew computers (nothing to do with me)

A 6502+V9938 system worth a look!

http://lc64.blogspot.co.uk/2015/04/firs ... v9938.html

A 6809 + V9958 +AY-3-8912

http://2.bp.blogspot.com/-7nZwsJMT9pk/V ... 6809io.png
https://www.youtube.com/watch?v=bbLPGtZADf4

Nice to see people designing stuff with the V9938/58

An interesting enhanced ZX81 clone I saw while lurking on the Raspberry Pi forum:

https://revspace.nl/ZX81%2B34_ZX81_clone
https://www.raspberrypi.org/forums/view ... 62&t=77429

Bill B wrote:An interesting enhanced ZX81 clone I saw while lurking on the Raspberry Pi forum:

https://revspace.nl/ZX81%2B34_ZX81_clone
https://www.raspberrypi.org/forums/view ... 62&t=77429

The write up for this claims it will be a self build kit.. but with so many surface mount components I think most self-builders won't have the tools to build it ? Plus one has to ask why would you go to such lengths to make a NEW ZX81 as the original was pretty inadequate even in it's day ! And to drastically 'Enhance' it would basically mean designing a Whole New Machine!

Some Old British Retro Machines that would make good self-build kits !

Memotech MTX (obviously)
Tatung Einstein
Acorn Electron/Acorn BBC
Oric-1/Atmos
Dragon 32/64
ZX Spectrum (already done)
Amstrad CPC (already done)
Camputers Lynx

Unusual or Rare Machines

Powertran Cortex (using TMS9995)

To that list you can add

ZX80 - Pretty much all of it is currently in production (except maybe the modulator ??)
ZX81 - Can be made from a ZX80 with a few extra parts.

Nascom 1/2

Acorn Atom - The 6847 VDG would have to be NOS or a pull

All of course were available in kit form in the early days of the home computer.

Err... Where have you guys been?

Jupiter ACE Kit (some info here)

2015 version of a Acon Atom - http://diy.acornatom.nl and http://www.stardot.org.uk/forums/viewto ... f=8&t=9083

Modern version of a ZX80/ZX81, the ZX80CORE
And there is a follow up in development ZXmore

Mark

I'd forgot the Sinclair QL.. I think some clones where made of this in the 90s using 6040 & 68060 CPUs .. but they never caught on ? There where clones of the original made in the 80s under licence but they sold in limited numbers or were designed for a specific purpose (Telecoms). All in all the Sinclair QL never reached it's expected potential !

http://www.q40.de/