Path: utzoo!mnetor!uunet!husc6!bloom-beacon!tut.cis.ohio-state.edu!im4u!ut-sally!bcm!svedberg!rick
From: rick@svedberg.bcm.tmc.edu (Richard H. Miller)
Newsgroups: comp.arch
Subject: Re: Survey of architectures was (Re: Proposed architecture characterization)
Message-ID: <1072@gazette.bcm.tmc.edu>
Date: 28 Apr 88 17:48:34 GMT
References: <2048@gumby.mips.COM> <10504@steinmetz.ge.com> <7657@ames.arpa>, <1988Apr26.024011.6516@utzoo.uucp>
Sender: usenet@bcm.tmc.edu
Lines: 21
Summary: PDP-10/8/11

In article <1988Apr26.024011.6516@utzoo.uucp>, henry@utzoo.uucp (Henry Spencer) writes:
> While considering the contributions of the PDP-8 and PDP-11, don't forget
> something that was a prominent feature of the 11 but really started on the
> late-model 8s:  a standard I/O bus running across the whole family, so that
> new models could use the same peripherals as old ones.

This was also a feature of the Decsystem-10 processors. All models used a
standard I/O bus and peripherals could be used. This may have been a feature of
the old PDP-6 as well, but I am not sure. 

As a side note, the I/O bus specs changed between the KA-10 and the KI-10. With
the KA-10, the processor had to terminate one end of the bus. With the KI-10,
the processor could occupy any position on the bus.




Richard H. Miller                 Email: rick@svedberg.bcm.tmc.edu
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