--- "Jerome H. Fine" <jhfinepw4z_at_compsys.to> wrote:
> The DZ11 used all 16 channels...
The DZ11 I am familiar with is a single card with 8 UARTs. Could
you be thinking of a different serial card, or were there perhaps
two DZ11s?
> Until about 1982, the 11/23 was the high end in the Qbus systems.
> Is that what you meant?
What I meant was when people interested in cheaper PDP-11s switched
from buying 11/04s and the like (new) went to buying 11/03s and
11/23s without the MMU. Software Results changed from building
HASPBOXes out of PDP-11/04s to 11/23s around 1982 or so, for
example, as the cheapest box that they could use to run the Bisync
protocol engine that preceded the COMBOARD.
Received on Fri Feb 28 2003 - 09:29:00 GMT
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: Fri Oct 10 2014 - 23:35:57 BST