BUG? ide1 working in 1.2.8 broken in 1.3.73

[zun at foop.mit.edu (Sean Chen)]

I have a third hard disk on ide1 in my 1.2.8 kernel that shares IRQ 14 with
ide0... I boot with "hdc=989,15,56,99,14". 
Here are the relevant parts of dmesg:

ide1: hdc: cyls=989,heads=15,sects=56,wpcom=99,irq=14
hda: ST3290A, 249MB w/64KB Cache, CHS=1001/15/34, MaxMult=32
hdb: Conner Peripherals 120MB - CP3H104, 116MB w/32KB Cache, CHS=762/8/39, MaxMult=64
hdc: WDC AC2420F, 405MB w/64KB Cache, CHS=989/15/56, MaxMult=16
ide1: secondary interface on irq 14 (shared with ide0)
ide0: primary interface on irq 14

Now I've switched to 1.3.73 and I can't get the new ide code to recognize it.
Using various combinations of the ide0= and ide1= options haven't worked.
They usually result in the kernel recognizing hdc but then it goes:

hdc: IRQ probe failed (0)
 ...
Partition check:
 ...
hdc: hdc: irq timeout: status = 0x50 { DriveReady SeekComplete }
 hdc: irq timeout: status = 0x50 { DriveReady SeekComplete }
 hdc: irq timeout: status = 0x50 { DriveReady SeekComplete }
 hdc: irq timeout: status = 0x58 { DriveReady SeekComplete DataRequest }
 ide1: reset: success
 ...
and so on.

I've tried booting with "ide0=serialize ide1=0x170,0x376,14" to get the
kernel to share IRQ 14 with ide1 but it's still the same.

Anyone have any idea what's going on here?

. . . Sean.