Paul Thompson wrote:

> My 5400 has standard MS650-BA memory boards.

What about I/O boards?  I've never seen a 5400, but a minimal
configuation for a 5500 is a CPU board, an I/O board, a memory
board and some sort of bus-termination board that is pretty bare.

Here's the boards that I know of:

	CPU             M7637 (part 50-19845-01)
	I/O board       M7638 (part 50-20145-01)
	Memory board    M7639 (part 50-20152-01)
	KZQSA           M5976 (part 50-20359-01)
	CXY08           M3119 (part 50-18096-01)
	??? board       M9715
	Chassis         220QH-D9

By the part numbers, I'd guess that the CPU, I/O and memory boards are
pecular to the 5500.  The "??? board" has a bunch of resistors and not
much else on it - I'd guess it's a discrete (!) SCSI or DSSI terminator.
The KZQSA and CXY08 should be usuable by any Qbus machines, right?  Do
any of the other board numbers mean anything to vax people?

Simon.