1 Jan
2006
1 Jan
'06
10:44 p.m.
woodelf wrote:
I have planned to do a Bitslice design but I have
never come up with a
simple to
decode instruction set.
For easy-to-decode, I can't think of anything that gives you as much
power for as little work as the DG Nova. The Nova encoding, however, is
very closely tied to a model datapath, as the arithmetic, logical, and
shift instructions are encoded like the so-called "microinstructions" of
the PDP-8. Most bits in the instruction correspond directly to control
signals without any encoding at all. On the other hand, the Nova
datapath is relatively straightforward to implement in TTL.
--Bill