RD54 and RT-11 5.4D

From: Eric Dittman <dittman_at_dittman.net>
Date: Sat Oct 27 19:22:18 2001

> Do you use RT-11 very much? Which monitor and what programs
> do you run? Also, how did you boot RT-11?

I haven't used RT-11 for several years. I booted from an RX50
(and now I've tried an RX33) drive.

> Is it possible that the WRITE PROTECT button on the front panel
> is pressed? You can determine that by sending the command:
> If the DUMP works, then you are at least able to read the drive.

The WRITE PROTECT is off, and I can read the drive with DUMP. I
can even see the ODS-2 boot blocks.

> In addition, also try the command:
> which will also show the map between the logical MSCP units and the
> physical hardware. Perhaps the ODS-2 mapping was different.

Here's the output:

.show dev:du

Device Status CSR Vector(s)
------ ------ --- ---------
  DU Resident 172150 154

          DU0: is set UNIT=0, PART=0, PORT= 0
          DU1: is set UNIT=1, PART=0, PORT= 0
          DU2: is set UNIT=2, PART=0, PORT= 0
          DU3: is set UNIT=3, PART=0, PORT= 0
          DU4: is set UNIT=4, PART=0, PORT= 0
          DU5: is set UNIT=5, PART=0, PORT= 0
          DU6: is set UNIT=6, PART=0, PORT= 0
          DU7: is set UNIT=7, PART=0, PORT= 0

> I presume you are using an RQDX3 (M7555) and DS3 is used on
> the drive. Also, which monitor are you using? A DEC distributed
> monitor will not have any strange aspects, but a SYSGEN might.
> RT11SJ and RT11FB use DU.SYS while RT11XM uses DUX.SYS
> as the device driver. And check the cables on the drive a second time.
> Finally, does the RX50 work? If not, begin to suspect hardware
> problems?

The RX50 (and RX33, if I swap it for the RX50) works. I'm using the
DEC distribution. There's been no SYSGEN at this point.
Eric Dittman
Check out the DEC Enthusiasts Club at http://www.dittman.net/
Received on Sat Oct 27 2001 - 19:22:18 BST

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