Help with RT-11 V02B

From: Jerome H. Fine <jhfinexgs2_at_compsys.to>
Date: Sun Feb 15 09:48:30 2004

>Paul Koning wrote:

> > "Jerome" == Jerome H Fine <jhfinexgs2_at_compsys.to> writes:
> > HOWEVER!!!!!!!!!!!!! After I "BOOT DX0" and:
> > .R PIP *RK0:*=RK0:RKMNSJ.SYS/U
> > Then back to E11 and "BOOT RK0" It does not work!
> > But if I "BOOT DX0" again and:
> > .R PIP *RK0:*=RK0:MONITR.SYS/U
> > and repeat, then I am able to "BOOT RK0", but I end up on
> > DX0, which is what I would expect since under V02B, the file
> > MONITR.SYS is really DXMNSJ.SYS and has all the stuff to boot
> > DX0 which it does do!
> > So what might be wrong? Any Ideas?
> No, the problem is that the monitor you want to boot MUST be called
> MONITR.SYS.
> So the correct commands are:
> .r pip
> *rk0:monitr.sys=rk0:rkmnsj.sys
> *rk0:a=rk0:monitr.sys/u
> Ditto if you want to switch monitors on the floppy boot medium.
> You copied the floppy system, so the monitr.sys you have is the one
> that is intended for a floppy disk as the system disk. When you
> hooked that (with /u) indeed it will boot the DX0 system. Not because
> "under V02B, MONITR.SYS is really DXMNSJ.SYS" but rather because you
> started from a floppy system so on THAT system, MONITR.SYS is a
> monitor built for a floppy system device.
> See also page 4-34 in the RT11 SYSGEN manual, which you can find at
> http://www.bitsavers.org/pdf/dec/pdp11/rt11/DEC-11-ORGMA-A-D_RT11v2Sysg.pdf
> That describes the procedure for switching between SJ and FB monitors,
> which clearly shows that the key issue is that the monitor you want to
> boot is always MONITR.SYS.

Jerome Fine replies:

I also posted the problem on alt.sys.pdp11 and vmsnet.pdp-11.

Megan Gentry answered with exactly the same information,
although her explanation was only 4 lines since she is aware
that I already understand what the RT-11 commands are. I just
did not realize that the file being booted had to have the exact
name "MONITR.SYS"

BUT, your expanded explanation is appreciated since I am
sure that most everyone else reading it would not have
understood.

One point that is interesting is that the command:

.R PIP
*RK0:*=RK0:RKMNSJ.SYS/U

is also accepted so long as the file MONITR.SYS is present
and is identical to RKMNSJ.SYS; also MONITR.SYS can
be placed on the media before or after the "/U" command.

Naturally, the real point to be careful of is that MONITR.SYS
is an exact copy of the correct file with the proper resident
device driver present within. With so many different monitor files,
I imagine that it might have been a bit difficult to keep track
if the user was switching back and forth.

While I started out with V02 of RT-11, I almost never bothered
with V03 of RT-11. So it would have been extremely rare, if
ever, that changing monitors was required. By V4.00 of
RT-11, the command had become:

COPY/BOOT RK0:RT11FB.SYS RK0:

and the file RT11FB.SYS was used with ALL devices.
MONITR.SYS was no longer in use, although it would
certainly have been allowed to have that name if the user
had some reason

I want to set up a CD with as many RT-11 distributions
as possible, but I would STRONGLY prefer to provide
RK05 image files rather than multiple RX01 image files.
For RT-11 distributions prior to V05.00, I probably have:

V01-15 / 1 * DT
V02B / 2 * RX01
V02C / 2 * RX01
V03 / 9 * RX01
V03B / 9 * RX01
V4.00 / 1 * RK05
V4.00C / 1 * RK05

but I doubt that I have the correct Volume ID / Owner
for V4.00C of RT-11. In addition, I can now provide
RK05 file images, but again the Volume ID / Owner will
probably be incorrect along with the order of the files.

After the CD is prepared and distributed, I want to
work on a Y10K compliant V05.03 for hobby users.

Sincerely yours,

Jerome Fine
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Received on Sun Feb 15 2004 - 09:48:30 GMT

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