27 Oct
2001
27 Oct
'01
12:22 p.m.
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:
DUMP/TERM DU0:
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:
SHOW DEV:DU
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
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/