National MA2000 parts.
dkelvey at hotmail.com
Mon Jan 1 13:16:10 CST 2007
I was just digging though my stuff ( actually, doing some early spring
cleaning ). I came across some of these components. I was wondering
if anyone else had heard of them before.
These are modules that stack to form systems. They are based on the
CMOS version of the NSC800 processor. This was pin compatable with
the 8085 but used the Z80 instructions ( or so I've been told ).
Here is waht I have:
MA2000 base unit ( damaged by a leaky NiCad but looks repairable )
MA2800 Processor unit ( some I/O, ROM with monitor and some RAM )
MA2232 RS232 interface
MA2301 Forth in ROM
MA2016 16K CMOS RAM's( used the bad NiCad to hold data ) I'f got 3 of these.
MA2017L 16K RAM with its own battery ( hope it isn't a NiCad ).
MA2732 Holds two 2716 or 2732 EPROMs
MA2802 Another with Real Time Clock.
Manual with data sheets for these and others. Also a lot on how to
use these, monitor listing and NSC800 instruction set are included.
I'm not thinking of getting rid of these but would like to know if anyone
else has played with these. A web search doesn't show a hold lot.
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