24 Jul
2006
24 Jul
'06
2:26 p.m.
Are you doing this to explore old 4-bit bipolar slice
logic or to design
your own instruction set? The later 29Cxxx logic seems to be easier to
work with--e.g. the 29C116 is a 16-bit slice that in addition to being
CMOS, reduces the package count considerably.
Now, I've not really used the 29116, I've only come across it in the PERQ
AGW3300 graphics processor, but it strikes me from the limited data that
I have on it, that if you use this chip you're limited to a 16 bit data
path. It's not really a bitslice chip in that you can't stick <n> of them
togehter (like you can with the 2901).
There were, IIRC, CMOS versions of the 2901 which would cut the power
consumption, although not the package count.
-tony