On Fri, 2 Mar 2012, Al Kossow wrote:
Providing detailed information on this would be
helpful in the future if
someone needed to build a non-mechanical replacement for the drum.
What else do you need besides the service manual that contains all details
and schematics? There are timing diagrams of the timing tracks along with
all logic equations that are used to derive the individual parts from the
read signals (e.g. sign bit, address part, opcode part).
I know of at least one Bendix G-15 that could probably
be checked out if a
replacement for the drum could be put together.
What exactly is the problem? From a first look at the G-15 docs, there
seem to be all required details of the drum and timing tracks.
Christian