2 Jan
2024
2 Jan
'24
7:42 p.m.
On Tuesday, January 2, 2024 at 11:29:36 AM PST, thomasdzubin--- via cctalk
<cctalk(a)classiccmp.org> wrote:
Can I install the KFQSA card in my 4000-200,
disconnect the internal disks from the SHAC and connect the disks to the KFQSA thereby
allowing NetBSD >to run?
Ive read (here?) that he BA430 has special magic which connects the KA660's SHAC to
the internal DSSI bus, via the Q22 fingers.
The KA660 ROM has built-in machinery to configure DSSI, both the onboard SHAC and a
KFQSA.
So in theory, you could use the KA660 boot-rom to configure the KFQSA.to a different DSSI
node number (not already in use).
Connect the KFQSA to the "end" of the internal DSSI bus, via the DSSI
bulkhead.
NetBSD won't recognise the SHAC, so you shouldn't need to disconnect the internal
DSSI bus, at least for manually booting from the KFQSA rather than the SHAC. I have not
yet tried this myself, though -- my BA430 has a KN220.