27 Apr
2018
27 Apr
'18
11:01 p.m.
From: Johnny Billquist
> Well, the 1972 edition of the -11/45 processor
handbook
^^
It would be nice if you actually could point out where
this is the
case. I just went through that 1973 PDP-11/45 handbook
^^
Yes, the '73 one (red/purple cover) had switched. It's only the '72 one
(red/white cover) that says 'segments'.
Noel
27 Apr
27 Apr
11:10 p.m.
New subject: /dev/drum
On 2018-04-28 01:01, Noel Chiappa wrote:
Yes, I know you said 1972, and I said 1973.
For 1972 I only found the 11/40 handbook. But, as I said, that handbook
also says "page". If you have some link to the version you refer to, it
would be interesting.
Told you I searched around in different handbooks from that era, and
found none who said segments.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
From: Johnny
Billquist
> Well, the 1972 edition of the -11/45
processor handbook
^^
It would be nice if you actually could point out
where this is the
case. I just went through that 1973 PDP-11/45 handbook
^^
Yes, the '73 one (red/purple cover) had switched. It's only the '72 one
(red/white cover) that says 'segments'. 
11:39 p.m.
New subject: /dev/drum
On Fri, Apr 27, 2018 at 5:10 PM, Johnny Billquist <bqt(a)update.uu.se> wrote:
On 2018-04-28 01:01, Noel Chiappa wrote:
Yes, I know you said 1972, and I said 1973.
For 1972 I only found the 11/40 handbook. But, as I said, that handbook
also says "page". If you have some link to the version you refer to, it
would be interesting.
Told you I searched around in different handbooks from that era, and found
none who said segments.
The OS Book I used in college in the late 80's said 'segments' to describe
the PDP-11 MMU. At least that's my memory, I can't even recall the name of
the OS book, and my cache of college textbooks has gone to good will years
ago. IIRC, it was because they were so large relative to the VAX and made
'page demand' difficult to implement.
Warner
From:
Johnny Billquist
> Well, the 1972 edition of the -11/45
processor handbook
^^
It would be nice if you actually could point out
where this is the
case. I just went through that 1973 PDP-11/45 handbook
^^
Yes, the '73 one (red/purple cover) had switched. It's only the '72 one
(red/white cover) that says 'segments'.
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Warner Losh