Re: Help: PDP-11 instruction classification (again!) - TUHS

10 May 2000

...

 53     (see J11) (KDJ-11D?)  
 Yes, the 11/53 is a KDJ11-D. 
Not KDF-11B????

...
  And lots of other systems.  Some DEC peripherals (most
noticably the
 early HSC storage controllers for VAXclusters) have J11's, several Xerox 
HSC was F11, J11 or T11???  I thought T11 or f11 in the early models.

...
  laserprinters used J11's, DEC PRO380's used
J11's.  Many third-party
 CPU boards use J11's, it's not unusual to see them scrounging the used
 market for HSC's to strip the J11 from, as the HSC's generally had late-rev
 J11's.  (And Harris hasn't made the J11 chips for many years now.) 
...
  T11 = ? 

 Never sold as a "PDP-11" system, though the chip does implement the
 basic PDP-11 instruction set (and some of the add-ons.)  It was sold
 by DEC in the KXT11-CA single board computer, which had a T11, 32K RAM,
 up to 32K of EPROM, 3 serial lines, some parallel I/O, and a Q-bus
 interface.  For more information see

You forget the falcon card KXT-11A, That with two MXT11 memory IO combo
have you 32kw ram, 4 serial, boot and some parallel that would run rt-11.
...
 From a functional view that would be like using a
LSI-11/2 card and it runs the same stuff.

...
  You can find T11 chips in several Q-bus and Unibus
peripherals, most notably
 the RQDX1, 2, and 3 (the chip labeled "27-17311-01"). 
Also used in VT240/241 terminals.

My collection have some marked DEC DC311/es (T-11 engineering samples).

I's a nice chip with a straightforward interface.  Anyone that knows 8085,
nsc800 would like interfacing t-11. Instruction set is base LSI11.

Allison

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Subject: Re: Help: PDP-11 instruction classification (again!)
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...
 > Yes, the 11/53 is a KDJ11-D. 
...
 Not KDF-11B???? 
The KDF11-B (why are people putting the hyphens in all the wrong places?) is
the quad-height 11/23 with two SLU's and boot ROM.

Tim.