6 Aug
2006
6 Aug
'06
10:19 p.m.
Chuck Guzis wrote:
I never did benchmark the 68881. IIRC, the 68K was a
big deal in the fab
business. I think it used the then-very-new 3 micron technology. My
biggest disappointment was that the CPU instructions weren't resumable
after a fault--i.e. with those 24 bits of address, there was no possibility
of virtual memory implementation. I did hear of a scheme for using two
Fixed in the '010
68Ks, one running a half-clock ahead of the other to
get around this, but
that was prohibitively expensive. 16 MB sounded like a huge amount of
memory back then.