<An FPF11 can be used with a KDF11-B (11/23+), which is a Qbus
<machine. It can also be used in an 11/24, it derives only
<power from the bus (if I remember correctly).
Correct, I have one.
<I would suspect that it might also work with an 11/23 (KDF11-A),
<since it has the same chip location for Floating point as the
<11/23+, but I've never confirmed this.
It works with all of the 11/23 series (Q and U,). Jumpers configure power
for either U or Q and much be checked before inserting.
What it is is a faster version on a quad board for the FPU chip. If you
crunch numbers on 11/23s or 11/24s it's a must have.
FYI, It's a raft of 2901s and some microcode to emulate the FPU chip.
It's faster as all the data paths internally (to the board) are wider.
Allison
Received on Fri Sep 03 1999 - 17:53:36 BST