16 Apr
1998
16 Apr
'98
9:50 p.m.
Yes it is in octal. If you noticed the keypad has numbers from 0 to 7 so the
whole system works in base 8.
The R key is a hardwired reset.
and the A, B, and C keys are not used by the KEX program.
By the way this kit was also called the Mini Micro Designer (MMD-1) and was
distributed by Circuit Design, inc. for $125 in kit form.
Francois
-------------------------------------------------------------
Visit the Sanctuary at: http://www.pclink.com/fauradon
-----Original Message-----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Thursday, April 16, 1998 6:17 PM
Subject: Re: 8080 Trainer - more info
This Trainer was called the Dyna-Micro
Here is the Memory allocation:
Thanks for this info (and thanks to Glenn for posting the ROM listing).
It looks like I'll be able to get it working...
Hi Lo
000 000 \
I now have to work out which socket is which. Shouldn't take long - I
recognise all the chips, have data one them, and it's quite simple. Don't
spoil it for me by posting the answer just yet ;-)
Key Prom
000 377 /
001 000 \
Optional ROM
002 377 / 002 000 \
002 377 ? I think. I assume you're using an octal representation of each
byte of the address here - something 8080 people often did. I think I
have the option RAM on my machine. At least, there are no spare sockets
in that area (4 RAM chips fitted).
Optional R/W Memory
003 377 /
003 000 \
Well, if I get my machine working, I'll probably have to program a 1702
on the old Intellec. In which case I'd be able to make a few for other
people if they send me blanks.
But it might just be easier to put it into a 2716 or 2764 and make up a
kludge board (or if you're building a machine from scratch, just design
the board to take one).
R/W Memory
003 377 /
004 000 \
Available for user expansion
377 377
/
Will post more later
Does anyone knows where I can find a 1702 programmed with KEX? Francois
-tony