18 Apr
2014
18 Apr
'14
1:38 p.m.
On Thu, 17 Apr 2014 16:45:47 +0200, Michael Stollenmaier wrote:
as a teacher at a vocational school in Germany I would
like to teach
students some hardware basics based on the 6809. I and a friend at a
hardware company developped a 6809 board with three serial I/O chips,
RTC etc. We want to run it under Cubix and we would like to make it
compatible to your N8VEM bus.
The "N8VEM bus" is ECB, which should be well-known in Germany. :)
Think Kontron, Janich&Klaas, c't Prof80 / Prof180 / Prof86, MC Z80, ...
Can you provide me with the N8VEM bus
backplane pinout, please? We think we should use your N.C. pins for
the special 6809 pins like AVME, FIR etc. since we do not want to
rely on the mezzanine board.
Tricky... the ECB is pretty close to he Z80 bus both in functionality
and timing. So your best bet is to make the 6809 card look like a Z80
to the bus. And you'll probably want to make sure you don't use lines
that are already in use by one or more manufacturers of ECB hardware.
Cheerio,
hauke
--
Hauke Fath <hauke at Espresso.Rhein-Neckar.DE>
Ernst-Ludwig-Stra?e 15
64625 Bensheim
Germany