2 Feb
2013
2 Feb
'13
1:59 p.m.
any clues or hints?
Serious memory test here...
All SCSI devices have an address including the host and the maximum was 8
total (0-7). Also the bus assumed only one controller so all other
units were
slaves that could do no more than assert ATN
I am also pretty sure you could share disk between Ataris on the same
BUS. These days with reserve/release we do it all the time...
Early (that era) SCSI disks did not know who issued
command as they were
slaves. Further they were FIFO serial command structure with minimal if
any command silo and the assumptuion that the command executed
produced results that went back to the only host controller.
Are you sure the bus was SCSI and not GPIB? GPIB was a multi talker,
multi controller, multi-listener bus that allowed for up to 31 devices
and was also a parallel 8bit bus.
Allison
thanks
-- jeff jonas