6 Feb
2013
6 Feb
'13
2:04 a.m.
Rich Alderson wrote:
Computer Interconnect (CI) was a 50Mbit ethernet[1]
70 Mbps.
Although it clearly was inspired by Ethernet, it is dissimilar enough
that I'm not sure I'd even call it a (lower-case "l") ethernet.
designed for the
Jupiter (follow-on to the DEC-20, to be called the DECSYSTEM-4050),
and later retrofitted to the VAX,
Perhaps you have more information about CI history than I do, but the
documents I've seen suggest that it was intended for everything from the
KL and VAX-11/780 up. The case could be made that it was "retrofitted"
to the VAX-11/750. The original CI hardware, including the PLI
interface, was clearly designed to be suitable for machines with memory
bandwidth as low as that of the VAX-11/780.
Eric