On Fri, Dec 18, 2009 at 4:42 PM, Dave McGuire <mcguire at neurotica.com> wrote:
On Dec 18, 2009, at 12:33 AM, g-wright at
att.net
wrote:
I just did a search for pdp 8A prom images and could not find
any. I'm sure I just looked in all of the wrong places
Any help, Looking for 158a2 and 159a2
?I'm hoping to get an 8/a next week; if I do, and if they're socketed, I'll
read them in for you.
I look forward to any PROM dumps (and should probably check my own
boards to see what I have), but there are 2-3 common sets documented
in the literature that cover various device combinations (RX8E, RL8A,
RK8E, PTR, DECtape, etc) ISTR there's only 4 bootstraps per PROM set,
so if you have a complex setup, it's not unlikely you may want to boot
from two different devices that don't happen to be
in the same set.
I'd quote chapter and verse on which part numbers contain
which
bootstraps, but you'll find the definitive answers in the Small
Computer Handbook (under KM8AA) and possibly in a table in the margins
of the printset. If you don't have an RL8A, it's likely that the
older PROM set will be exactly what you need. If you do want to boot
an RL01 and you have other system devices, I'd say it's likely that
you will want two sets of PROMs on hand.
-ethan