29 Jun
2011
29 Jun
'11
11:10 a.m.
VAX 11/730 running VMS 3.7.... ~20min boot time? That
was upgraded to
a uVAX II which I still have in my garage.
I see...
I teally must spend some time and get my 11/730 running again. It's one
of only 2 series of VAXen that I would really consider running at home [1]
(the other being the 11/780 series, of course, but I don't have space for
that...)
[1] In that I can repair it. The 11/730 is all unprotected PALs and
standard ICs. The only custom aprts are the memory ECC gate arrays, and I
would geuss it's posible to kludge something if that foil (even if you
then don;t ahve ECC memory).
The crazy thing about the 11/730 is the CPU control store. It's DRAM.
Which means the CPU has to be pasued every so often to refresh the
control store (unlike video RAM, say, you cna't assume that enough
locations will be accessed naturally to do this). Whatever were they
thinking????!?
-tony