31 Aug
2019
31 Aug
'19
11:37 a.m.
On Fri, 30 Aug 2019, Clem cole wrote:
Btw. The issue with the 68k was Nick Tredenick’s
original Microcode did
not save enough information during some of the faults. Les Crudele once
told me, that it turns out he had tried to fix it but there were a
series of errors and some short cuts they used to fit it in the store.
They gave up trying to fix it as the part was purely skunkworks and they
could not respin it at the time. After it succeeded and were a real
project, the difference between the original and the 10 was Nick redid
the microcode but they had made a larger microstore - otherwise
basically the same Si.
Yep, that certainly rings a bell. ISTR that Sun had a board with the two
CPUs, one keeping an eye on the other.
Ah, those were the days :-) Now, we just have to put up with Intel,
although I believe the ARM is much better.
-- Dave