QBus termination?

From: Pete Turnbull <pete_at_dunnington.u-net.com>
Date: Mon Feb 7 20:09:33 2005

On Feb 7 2005, 20:32, Patrick Finnegan wrote:

> The RQDX3 doesn't, but an RQDX[1] does. Also, a BDV11 and an M9400
do as
> well.

An RQDX1 does not terminate the bus. It has one resistor pack, but
it's not for bus termination. Perhaps you're thinking of the fact that
an RQDX1 must be the last device on the bus (unless you don't care
about DMA or interrupts further down) but that's only becasue a bug
means it doesn't pass BIAK or BDMG. An RQDX2, however, which is a
modified RQDX1, does pass BIAK and BDMG, doesn't need to be the last
device on the bus, and often isn't.

Pete						Peter Turnbull
						Network Manager
						University of York
Received on Mon Feb 07 2005 - 20:09:33 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:37:36 BST