🚀 go-pugleaf

In article <1991Jun16.004606.10658@uokmax.ecn.uoknor.edu>, sspatter@uokmax.ecn.uoknor.edu (Samuel S Patterson) writes:

> P/N1210711	This card has 44 chips on it and room for another 132...
> 		can't figure out what it does though...  Here's the stuff off
> 		the front of the chips too if it helps any: TMS 4532-20
> 		ZA1033-A3 P8044-P

  I think you're reading the 12-class part number off the handle - look for
a 54-class part on the printed circuit card. Probably a memory board of some
sort. Hoefully, since I see no other memory in this system 8-).

> M9312		This one has a 3-wire cable running to the console...

  Bootstrap/terminator. Should live at one end of the bus or the other. Has
device boot ROMs on it.

> Rev D11 0066	I am totally !cxlue to what this one does.  Not even sure that
> 		is the card number.  It's just the closest thing I found...
> 		it has 4 26 pin connecters and 1 64 pin connect or in.

  No idea. Look at the circuit board for a 54-xxxxx part number.

> M7762		This one is connected to my drive cable so I figure it's some
> 		controller but I can';t find it in any of my books..

  RL11, RL01/02 controller.

> M8267		This one is plugged in next to the M8265 and M8266 cards and 
> 		has jumpers, connecting it to them.  I suspected it was some
> 		kind of coprocessor but the chips on it look more like 
> 		RAMchips...

  Floating point processor (FP11A). The M8265 and M8266 are the 11/34A CPU
set (KD11E-A)

> --------------------------The Rest-------------------
> M9302

  The other terminator. Should be at the other end of the bus from the M9312.
  
> M9202

  These connect seperate backplanes together.

> M7856 (2 of them)

  DL11W serial port + clock.

> M7859

  11/34 programmer's console interface

> M8265 & M8266

  CPU, again.

> And 2 serial connection cards...

> ----------------------------------------------------
> Also I was wondering if I really need to have flip chips in every slot that
> has a blank place in the 3rd slot from the back...
> -----------------------------------------------------

  If an entire Unibus hex slot is empty, you need a grant card in there. That's
the G727 cards you're talking about. However, there are 2 catches: 1) this only
applied to normal unibus peripheral slots. CPU backplanes may have dedicated
slots that should be left open. The same is true for options like the RK611.
2) There is a 5th jumper needed, the NPG jumper, which is usually wired on the
backplane with wire-wrap wire. I'd suggest finding a local PDP-11 hacker who
can look at this for you.

	Terry Kennedy		Operations Manager, Academic Computing
	terry@spcvxa.bitnet	St. Peter's College, US
	terry@spcvxa.spc.edu	(201) 915-9381