Jupiter Ace

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Mon Jun 2 14:20:30 2003

> I'm finding all this discussion about debugging the
> Jupiter Ace Fascinating, if a bit over my head.
>
> >From what I understand, the unit is VERY similar to a
> Timex/Sinclair 1000 or Sinclair ZX-81.

I beleive the hardware is very different!. The Ace has 3K of memory. 1K
for program storage, 1K for video, 1K for a programmable character
generator. There's a real video timining chain in there too -- the
display is mostly done in hardware, unlike on the ZXs.

> Still got my eye out for a ZX-80. When they came out,

It's one of the machines I don;t have either...

> I remember going to the Trenton Computer Festival, and
> having to decide between getting a ZX-80 or a Disk
> Drive for my TRS-80 Model I (1981 I think...).

I remember seeing one at a radio rally (hamfest) towards the end of the
1980's. I think I could either have bought that or an TDMS5 teleprinter
test set (full of valves, and with service manual). You can guess what I
did :-)

-tony
Received on Mon Jun 02 2003 - 14:20:30 BST