[rescue] RS/6000 board ID

[dave at cca.org]

vance at ikickass.org writes:

>Have you ever seen DASD connectors?  They're bigger than that entire card.
>That card is not ESCON, nor FICON, no Parallel Channel.  BTW, there are
>fiber-based channels.  They're called FICON.  Anyway, RS/6000's don't have
>the I/O to talk straight to channels without the help of coprocessed
>channel cards.  That card doesn't have an i960 on it anywhere I could see.
>DASD isn't a disk-connection standard, DASD disks are just SCSI.  DASD is
>a method of connecting direct-access disk to channelized I/O on a
>mainframe.

I have been told that SCSI is primarily based on "bus and tag".

a. Do you think that's true?

b. What machines/period was bus-and-tag used on?

------ David Fischer ------- dave at cca.org ------- http://www.cca.org ------
----------------- Live each day like the Triffids are coming. -------------