[vcf-midatlantic] jade z80 cpu card

systems_glitch systems.glitch at gmail.com
Tue Sep 26 13:09:08 EDT 2017

I've had two or three of their Big Z Z80 CPU boards pass through my shop,
they're fine boards, pretty reliable, onboard console UART, boot ROM, etc.
I'd say it's worth having. I believe it also provides Phi1 (phase 1) clock
which is not always available with Z80 boards -- helps with compatibility
with older boards designed for 8080 systems.


On Tue, Sep 26, 2017 at 1:05 PM, william degnan via vcf-midatlantic <
vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:

> Quick show of hands....anyone have a working Jade Z80 CPU card that they
> use?  Are these nice worth working to restore?  I got one that came with a
> California Computer Systems S-100 computer.  8 years ago I tested it with
> an in-circuit emulator that seemed to indicate it was at least able to
> initiaize but I have not gotten it to talk nicely to an I/O card, garbles
> characters.  I dropped the project to move onto something else.  Thinking
> of returning to it to see if I could make more progress.
> BIll

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