🚀 go-pugleaf

Just to pick a nit or two, and ask a question:

Yes, SCSI-2 is 10 Mtransfers/sec, meaning 10 MB/s @ 8 bits, 20 MB/s @
16 bits.  NCR claims their 53C710 is good to 12.5 Mt, but points
out that it violates the standard that way.

The first sentenc of the foreword of standard says, "...bus
with up to 8 devices". Because of the way every device determines
whether or not it has won arbitration, IDs above 7 are
impossible on SCSI.  Theoretically it would work if all devcies
on the bus were 16 bits, but nobody's building the logic
to handle that since the spec forbids it, and they share the
bus with 8-0bit devices anyway.

Does anybody have a feel for how fast you can really make
Asynchronous transfer run?

I think VMS has an extent-based file system.

			--Rod