CompuServe Thread

#WordSync Problems

5 messages in this thread
#99158From: Harry CallesisApr 20, 1990 8:00 PM
What I mean is, the drives connected to the WordSync supply the SCSI IDs. The card itself is not a device, just a controller. My 296N is set to device 0, and my external 4070 is set to device 2, and there are no conflicts with the card.
#99215From: Don Curtis/SYSOPApr 21, 1990 1:07 AM
All devices on a SCSI bus (except perhaps that 'single initiator bus mentioned by Craig from ICD) have to have a SCSI ID. It's part of the spec. Else it couldn't "grab" the bus for a request…since it couldn't identify itself to the other devices on the bus. However, there's nothing in the spec that says the Host Adapter (which is what the WordSync is) has to have it's ID user selectable. It can easily be permanently set at any ID number the manufacturer prefers, probably 7.
#99241From: ICD, Inc.Apr 21, 1990 7:28 AM
I do like the fact that you keep using "host adapter" instead of "controller". Maybe if we do it enough everyone will change? 😉
#99273From: John DraperApr 21, 1990 2:59 PM
Heh heh.. I try to use the terms properly, but I fear it's a losing battle at times. I remember very well how disappointed I was when IBM's mainframe disk subsystems started using the term 'controller' to refer to something other than 'the thing that attcahed to the channel', and started using it to refer to 'the thing that connected the drives to the channel adapter'.
#99240From: ICD, Inc.Apr 21, 1990 7:28 AM
It probably does have a SCSI ID, since most host adapters do. And, as Don said, it is probably 7, since bus arbitration priority is determined by highest ID number.