6 May
2019
6 May
'19
5:21 p.m.
Thanks... I have an RT-11XM pack with version 5.04, booted the system from
that - and it does recognize the floppy!
Except that whoever built it didn't bother to include DU.SYS, just DUX.SYS.
Grrr.
Now I just have to figure out how to update the old RT11SJ 5.01 that my TSX+
runs on top of, to a later version, without clobbering all my work building
it :)
Guess I get to learn how to make an RT-11 bootable disk!
-----Original Message-----
From: John Forecast
Sent: Monday, May 06, 2019 5:38 PM
To: Charles ; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: RT-11 doesn't recognize my 3.5" floppy
The release notes on bitsavers indicate that the RX33 was not supported
until RT-11 V5.04.
John.
On May 6, 2019, at 6:20 PM, Charles via cctalk
<cctalk at classiccmp.org>
wrote:
I have installed an RQDX3 and the M9058 distribution board in my 11/23+.
Since I don't have a 5.25" drive yet, I hooked up a 3.5" HD (1.44 MB)
drive from an old PC.
After a struggle (which I documented on VCFED's DEC forum), I managed to
get all the jumpers and cables set correctly, and now my XXDP diagnostics
(ZRQA?? ... ZRQF??) recognize the drive as an RX33 (DU0:, logical drive 0
since no hard disks are attached). It passes all the tests, and I can
INIT, DIR, and copy files to it using the limited OS with the XXDP suite.
The LED on the RQDX3 blinks once when the drive is accessed. So far so
good.
But, when I boot the system (with RT-11SJ V5.01), it can't see the drive
at all. Attempts to access it result in the command hanging indefinitely,
the drive does not select, and the RQDX3 lamp flashes rapidly. SHOW DEV:DU
does say that the handler is installed for the correct 172150, 154
location. However, SHOW DEV:DUn where n=[0..3] displays two blank lines
then back to the dot prompt.
Is my version of RT-11 just too old to recognize an RX-33? If so, what do
I need to fix this? Presumably a later DU.SYS?
Thanks for any help. Most of my experience is with PDP-8's so this is slow
going...
-Charles