M9312 boot roms (again)

From: Gooijen H <GOOI_at_oce.nl>
Date: Sat Dec 4 10:13:40 2004

  Sorry, I never bothered making or downloading those ROM images.
I must admit that it would be a nice addition to the M9312 page that
I have put in the PDP-11/34 folder ... if Pete gets his hard disk data
recovered (or read the PROMs again), I will gladly add that to my site
(if Pete does not object).
As proven last week: some copies of the stuff at several sites may not
be such a luxury as first thought of ...

- Henk, PA8PDP.

-----Original Message-----
From: cctalk-bounces_at_classiccmp.org
To: General Discussion: On-Topic and Off-Topic Posts
Sent: 4-12-2004 13:29
Subject: Re: M9312 boot roms (again)

On Nov 27 2004, 23:01, Wai-Sun Chia wrote:
> Hello,
> Sorry to beat this old horse again, but did anybody set up a
> repository for M9312 boot images since the last discussion?
> (I actually went to look for them in www.classiccmp.org/M9312, and
> Pete's DECROM repository doesn't seem to have the 23-xxxA9 M9312
> roms)
> I need some of them, specifically the DU, DX, and DY.

Henk may have (http://www.pdp-11.nl/index.html), but maybe not online.
 I have a few on a local disk. Ah, spit, that's the one that crashed a
few months ago, and I've not wired up the programmer again yet, so I
have some ROMs but not the images. The ones you want are:

23-753A9 RX01 DX Boot ROM
23-757A9 UDA50 DU Boot ROM } I'm not sure if both are
23-767A9 UDA50/RAxx DU Boot ROM } correct -- see below
23-811A9 RX02 DY Boot ROM

I have at least one of each of these, except the 23-767A9. I probably
have that number in the list because it's been listed somewhere with
that description, but since I have two 23-757A9 and no 23-767A9, I
wonder if the 767 is a typo? Or is the "DU" against 757 meant to be

I'll host the images if no-one already has.

> Question:
> Is the DY (supposed for RX02) able to boot RX01s too?

If you mean boot from RX01 drives, no, the bootstraps are different.
 If you mean boot from an RX01 diskette in an RX02 drive, yes, it
should work, though depending on the OS, the diskette may need a DY
boot block.

Pete						Peter Turnbull
						Network Manager
						University of York
Received on Sat Dec 04 2004 - 10:13:40 GMT

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