20 May
2026
20 May
'26
7:31 a.m.
I guess I'm open to accepting that if I must. I do have other controllers
that explicitly support Fuji 160..
But a 1985 controller, built by arguably The Controller Industry Leaders
not able to keep up with a tremendously popular 1981 disk?
And at the same time controller manual explicitly calling out support for
its newer (and presumably therefore faster) brethren disks?
On Wed, 20 May 2026 at 08:18, Tom Uban <uban(a)ubanproductions.com> wrote:
As I recall, the Fujitsu drives are a bit faster than
some of the SMD
interfaces can handle.
--tom
On 5/19/26 15:03, Jacob Ritorto via cctalk wrote:
Hi all,
I have this UD33 controller that works perfectly with another newer
SMD
disk (CDC 9720), but when I try it against my
beautiful old Fuji 160
(M2284K), It gets through format okay but has intermittent errors on
verify
/ reliability test. If I reduce the number of
cylinders / heads, I can
get
it to pass, but not every time.
I have a good thick ground and same cables that worked perfectly with the
other disk, hoping that's enough of a sanity check on those.
I have the UD33 configured thusly:
type: 1
units: 1
sectors per track: 32
physical heads: 10
physical cylinders: 823
spare sectors per track: 1
spare cylinders: 2
configuration bits: 6
LOWER RPS: 3
UPPER RPS: 7
split into one drive with 1 head and the other with 9 heads to speed
things
along :)
GAP 0: 259
GAP 1: 4112
GAP 2: 780
Spiral offset: 1
The drive's switches are set for soft sectoring and tag 4/5 enabled.
I had tried hard sector setting on the drive with 32 sectors / 640 bytes.
It's SO CLOSE to working I can taste it :).
I have another Fuji 160 that is doing basically the identical same
misbehaviour.
And as usual, I am just not quite understanding the final clincher piece.
Anyone know of better settings I should be using and most importantly
Why?
thx
jake
P.S. I was hoping that somewhere someone would have written down what
controller settings work with the UD33 or QD32, etc, but no luck finding
them. You'd think despite the 3 or so years gap in the disk vs
controller
that this would've been officially supported
at some moment in the
universe, no? I just wish I knew how to calculate it properly myself!