On Fri, Jun 16, 2000 at 08:55:29AM +0200, Tom Ivar Helbekkmo wrote:
> I've got a SCSI Yamaha CD-RW (it says "4x4x16" on the front; I don't
> know what model it actually is, but can take the machine apart to
> check if it's relevant).  It's giving me a bit of boot-time trouble:
> 
> ahc1 at pci0 dev 6 function 0
> ahc1: interrupting at irq 9
> ahc1: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs
> scsibus1 at ahc1 channel 0: 16 targets, 8 luns per target
> [...]
> ahc1: target 4 using 8bit transfers
> probe(ahc1:4:0): SCB 1d - timed out in Command phase, SEQADDR == 0x155
> SCSIRATE == 0x0
> probe(ahc1:4:0): BDR message in message buffer
> probe(ahc1:4:0): SCB 1d - timed out in Command phase, SEQADDR == 0x155
> SCSIRATE == 0x0
> probe(ahc1:4:0): no longer in timeout, status = 0
> ahc1: Issued Channel A Bus Reset. 1 SCBs aborted

As suggested by other people, you may want to set the default wide/syncrate
parameters in the SCSI BIOS setup a little more conservatively. Also,
make sure that you have an option called "termination for single-ended
devices" on in the setup.

- Frank