[BBC-Micro] Acorn SCSI board arbitration

[Phil Blundell]

On Tue, 2007-04-17 at 15:17 +0100, Richard Gellman wrote:
> > In the Master AIV version? In the Winchester flavour there seems to be no
> > way
> > for a host to just assert just one of the 8 data lines (corresponding to
> > the
> > ID of that host) and leave the other lines in a high-impedance state where
> > another host on the bus is free to assert them.
> 
> Hmm. Certainly writing to the data bus is possible, but two hosts arguing
> over zero-state bits might cause a "heated" discussion....

I thought SCSI used open-collector signals thoughout for that reason.
Am I mixing it up with something else?

p.