TRS-80 Model II Hard Disk Controller

[ball.o...@gmail.com]

I found a Type 4 hard disk controller separate from my Model II last year and I never really knew how to use it until I got a copy of TRS-xenix 1.03 (and the two piece M68K board). I keep a small stockpile of known good ST-412 interface hard drives and I attached one of my 20mb ST-225's to the system as according to reports it was compatible with this controller. The problem I am running into is that formatting under DISKUTIL cannot be done as it constantly insists that the whole disk is bad.
Again, I can rule out a bad drive and through testing I also ruled out the cabling. What I can't rule out if something is wrong on either the controller or with the version of Xenix I am using. I also noticed that with the controller attached to the drive the BUSY light stays on, unless you set the drive ID to anyhting but 0. At which point the BUSY light stays off until you tell DISKUTIL that the drive is on another channel, at which point it comes on and you can't put it out unless you reset the computer.
The controller has two jumper blocks. I've touched neither because I ahve no clue what they do and I can't find any documentation for the controller.
I'm having a lot of trouble finding people online who know much about the Model II's. I'm wondering is anyone here knows anything about these controllers.

Related Photographs:

Drive controller
http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/CRW_7791.jpg

ST-225
http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/100_2769.jpg

Diskutil (error map was not present on drive)
http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/CRW_7789.jpg

Format error
http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/CRW_7790.jpg

[turnkit]

Is the drive known good?

You might try a low-level format on a PC just to test it.

Also, I've no experience w/ the Model II, but a 20MB drive seems rather large (-!). If you have a five you might try it. 8)

[ball.o...@gmail.com]

I could of sworn it passed a format last I tried but I guess I can try again if I can throw a quick system together. I originally formatted and tested it on an AT&T PC6300 and it for some reason died when I moved last month.
20mb is the smallest capacity I have for an ST-412 interface right now but I got a pile of other 3.5" MFM drives in 20 and 40mb capacities from WD, Kalok and kyocera.
They all behave the same when attached which is making me suspicious.

I'm taking my hard drive compatibility from here:

http://nemesis.lonestar.org/computers/tandy/hardware/storage/mfm.html

A Seagate ST-225 is listed as one particular drive that has been known to work with the controller so I'm fairly certain it should work.

[ball.o...@gmail.com]

I again tested the drive and cabling by attaching it to a WDXT-GEN hard disk controller and under MS-DOS used DEBUG G=C800:5 to run the XT-GEN low-level format utility. Drive formatted with no problem.
Tried formatting again with DISKUTIL. Same error.

Everything I read so far says the drive WILL work but the utility keeps telling me it's no good.