DUP Problem with RT-11

From: Jerome H. Fine <jhfinepw4z_at_compsys.to>
Date: Sat Mar 15 21:23:00 2003

>"Jerome H. Fine" wrote:

> I have been attempting for some to to write ALL 65536 blocks
> from one RT-11 partition to a second RT-11 partition. Does
> anyone know of what is wrong with what I am doing? I am
> using V5.03 of RT-11 under the Supnik emulator and I do the
> command:
> COPY/DEVICE/NOQU DU0:/START:0./END:65535. DU1:/START:0.
> However, ONLY 65535 blocks are transferred. On the other hand,
> If I do the command:
> COPY/DEVICE/NOQU DU0:/START:65524./END:65535. DU1:/START:0.
> then TWO blocks are transferred.
>
> Can anyone help? Any suggestions other than going into the DUP.SAV
> program and fixing this bug?

Jerome Fine replies:

After 10 years, I finally (by accident) just tried the correct combination.
But it
still takes TWO commands to do what should be done with just ONE command:

COPY/DEVICE/NOQU DU0: DU1:
which results in the following command:
COPY/DEVICE/NOQU DU0:/START:0./END:65534. DU1:/START:0.

I then followed with this EXPLICIT command (just thought I should try it
today
and found that it works):
COPY/DEVICE DU0:/START:65535./END:65535. DU1:/START:65535.

After that I checked the result (actually before and after the previous
command):
DIFF/BINARY DU0:/START:0./END:65535. DU1:/START:0.

and found that the last ONE block COPY command had indeed worked. If
you actually read this far and you would like a copy of an enhanced BINCOM,
let me know via an e-mail and after I have fixed a few bugs, I will release
it
for hobby use. The DEC distributed version of BINCOM does NOT have the
ability to read block 65535.

Sincerely yours,

Jerome Fine
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Received on Sat Mar 15 2003 - 21:23:00 GMT

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