Have you tried disabing sync on the esp?
	(Its done by the 'flags' option in the config file)

                   David/abs             (david@mono.org)

.---- I've been too drunk to love ----.--- I've been too drunk to remember -.
|          Too drunk to care          |     The hell of the night before    |
|  Looked like death, felt like Hell  |    I've been drinking myself blind  |
`------ Been the worse for wear ------'--- And still I'll drink some more --'

On Thu, 22 Aug 1996, Jon Buller wrote:

> I have a SPARCStation ELC with a pair of DEC RZ55 disks that are
> causing my kernel to have problems when they are probed.  I moved
> one of them over to my pc532, and had the same problem.  However
> the mini-root (with disklabel and kernel) I got to get my ELC up
> and running, (Thanks again David!) boots OK.
> 
> I got his kernel config, and there's nothing special in there,
> however if I build a kernel with the same config file, I get
> wonderful things like:
> 
> sbus0 at mainbus0 ioaddr 0xf8000000: clock = 20 MHz
> dma0 at sbus0 slot 0 offset 0x400000: rev 1+
> esp0 at sbus0 slot 0 offset 0x800000 pri 3: ESP100A 20Mhz, target 7
> scsibus0 at esp0
> probe(esp0:0:0): max sync rate 3.90Mb/s
> probe(esp0:0:0): target put in SYNC mode
> probe(esp0:0:0): esp0: timed out [ecb 0xf85a58a0 (flags 0x8, dleft 20, stat 2)],
>  <state 5, nexus 0xf85a58a0, phase(c 1, p 1), resid 20, msg(q 0,o 0) DMA active>
> esp0: timed out [ecb 0xf85a58a0 (flags 0x18, dleft 20, stat 2)], <state 5, nexus
>   0xf85a58a0, phase(c 1, p 1), resid 20, msg(q 4,o 0) DMA active> AGAIN
> esp: message queue not empty: 4!
> probe(esp0:0:0): max sync rate 3.90Mb/s
> probe(esp0:0:0): target put in SYNC mode
> probe(esp0:0:0): esp0: timed out [ecb 0xf85a58a0 (flags 0x8, dleft 20, stat 2)],
>  <state 5, nexus 0xf85a58a0, phase(c 1, p 1), resid 20, msg(q 0,o 0) DMA active>
> esp0: timed out [ecb 0xf85a58a0 (flags 0x18, dleft 20, stat 2)], <state 5, nexus
>  0xf85a58a0, phase(c 1, p 1), resid 20, msg(q 4,o 0) DMA active> AGAIN
> esp: message queue not empty: 4!
> probe(esp0:0:0): max sync rate 3.90Mb/s
> probe(esp0:0:0): target put in SYNC mode
> 
> This is from a kernel SUP on July 8, 1996.  David's kernel was build April 2
> if that makes any difference.  Any suggestions?
> 
> Many thanks in advance,
> Jon Buller
>