Hi Adrian ,
I'm certain I have a couple 8085s you can have for the shipping . Let me go
through my storage unit this week end and find them . I'm in San Diego , CA
USA , there has to be some slick way to ship to the UK to avoid all the
unpleasantness .... Do you have PayPal or .... ? We can figure something
out . You do know the 8085 has a MINIMUM frequency of 500 KHz due to
internal dynamic logic ? It gets real pissy if you go below that . CDP1802s
you can clock down to 0 Hz . Let me know if this will work for you . Happy
Turkey Day !
Best regards, Steven C KJ6STF
On Mon, Nov 7, 2016 at 3:32 PM, Adrian Graham <witchy at binarydinosaurs.co.uk>
wrote:
Hi folks,
Still working on this STC Executel and it looks like the CPU isn't too good
given how hot it gets within a minute or so. The display is the same
whether
there's a CPU physically present or not. I built this circuit to test it:
http://saundby.com/electronics/8085/freerun.shtml
Using a 4mhz crystal the address lines are all over the place - I'm using a
logic analyser rather than LEDs.
Has anyone got a spare they'd like to sell me? I'm struggling to think of
something I've got that may have a socketed 8085...
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?