I have two backplanes and a diablo drive if anyone is interested.
Paul
On Mon, Feb 8, 2021 at 11:38 PM Ethan Dicks via cctalk <
cctalk at classiccmp.org> wrote:
On Mon, Feb 8, 2021 at 10:22 PM Fritz Mueller via
cctalk
<cctalk at classiccmp.org> wrote:
Yup, RK11-C, and it seems complete (modulo drive
cables and
terminators.) I have
one debugged and running in my '11/45, so I
know it well.
I've had one for years but I haven't tried working on it yet.
> On Feb 8, 2021, at 3:16 PM, Ethan Dicks via
cctalk <
cctalk at classiccmp.org> wrote:
The
ribbon cables are a bit out of place... perhaps they were just
stuffed into empty slots to keep them from being damaged.
The cables are actually in the correct slots -- they connect A30 and B30
to the
pass-through connectors to support plugging in a
pair of KM11s from the
outside of the rack for debug.
Ah... handy. I don't recall if mine has those or not. I do have a
replica KM-11 set that I need to construct. It will definitely come
in handy.
On nice thing about this controller is that it
supports "Read/Write All"
mode, which
lets you read or write the raw bitstream
including block headers. This
can be useful
for disk recovery if you have a corrupted block
header, or for
reading/writing "foreign"
disks (within limits). This is controlled by bit
9 in the CSR, which is
unimplemented on
the later controllers.
Interesting. Did not know that. I don't know that I've ever had a
corrupt disk that I needed to read, but it's good to know that feature
exists.
-ethan