[HECnet] 2.11BSD

John Wilson wilson at dbit.com
Tue Dec 18 10:11:03 PST 2012


From: <Paul_Koning at Dell.com>

On Dec 17, 2012, at 6:01 PM, Johnny Billquist wrote:
To make it clear - the PDP-11 have a very normal MMU with pages.

Semi-normal.   It's rather unusual in that it has a paged MMU with page
address granularity different from the page size (64 bytes vs. 8k bytes).

Yes that's true, and can be annoying (fragmentation), but at least it's
optional -- if you want to you can do everything on 8 KB boundaries and
then it's just like any later MMU, except that you'll run out of core in
no time.

John Wilson
D Bit



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