I know this is a strange place to ask, but it's as good a place as any.
Anyone on here used IBM's XLC in very old versions?
Anyone know what the argument -qdebug=austlib does?
I can't seem to find any documentation that says... It would have been an argument for the compiler shipping with AIX 3.2.5, I believe.
Thanks in advance!
> From: Jerry Weiss
> I always wondered why the RKV11-D was only 16 bit addressable.
The manual (EK-RKV11-OP-001) says: "Since the 11/03 BUS structure has no
provision for extended addressing, no connection is made to the bus from
these [XM] bits on the RKVII-D." (pg. 3-5).
> The DEC RK05 disk subsystem cost $10K list circa 1978 (drive, RKV-11D
> controller and cabinet), so this wasn't a trivial purchase.
Interesting. Where did you see that listed, just out of curiosity? (I looked
in the Jan '84 PDP-11 Systems and Options, my copy of which just showed up,but
that's too late; I could probably find it if I pawed through all my DEC sales
literature, but I'm too lazy... :-).
Noel
I believe the original Amiga file system also used a linked-list approach. That way you could, theoretically, reconstruct a file from any one of it?s data blocks.
Richard
Sent from Mail for Windows 10
Hi All,
Back after a long time away from this list... I happen to have a small herd
of Apollo DN3500/4500 boxen which i pulled out the other day to see if they
still run. Sure enough they still boot up (one has a flaky PS but i have a
few spares). Anyway, the last time i fired one of them up (runs SR 10.4.1)
was around 2015 and it still was able to deal with the current date back
then. This last time the other day I did an EX CALENDAR to reset the date
to the current date and it defaulted to some date in 2015 again and i
wasn't even able to log on using my known login. I figured it was due to
the well known date bug so i reset the date back to 2013 (of course it
warned me about possible duplicate file IDs, etc) but I was able to log in
again.
My question, has there been any progress in fixing the date bug by anyone
(who still has some of these machines) (I'm thinking guys like R.
Stricklin..). Or is this pretty much a dead end? I know HP put out a
"patch" which according to Jim Rees's page was never really an effective
patch to begin with...Any insight would be appreciated.
-Kurt
On 4/8/21 8:40 AM, Eric Smith wrote:
> On Thu, Apr 8, 2021, 09:34 Chuck Guzis <cclist at sydex.com
> <mailto:cclist at sydex.com>> wrote:
>
> There's a big difference--in a WORM, unwritten sectors *mean* something.
>
>
> For archival purposes, in what way does an unwritten sector on a WORM
> mean more than an unwritten sector (with no data field present) of a
> floppy? Neither can be accurately archived without representing the fact
> that it is unwritten.
Simple--a WORM contains the entire history of information on the disc;
nothing is ever lost. A floppy can have data overwritten--and probably
does (e.g. directories and allocation maps) The only way to update a
WORM is to add to it.
--Chuck
> From: Ethan Dicks
> One of these?
> ..
> Looks neat.
Wow; that's pretty impressive! Not only will it talk to an RK05, it also
works with drives from Ampex, Control Data, Diable, Pertec, etc, etc. I
didn't realize they were all similar enough (in terms to the controller
interface) to be interchanged like that.
For the RK05, it must have used a flat cable from the Berg header on the card
to a custom dual card that plugged into the mini-backplane in the RK05
(similar to the RKV11-D).
> From: Chris Zach
> I have wondered if the Plessy can do 22 bit DMA
Depends on whether or not it's program compatible with the RK11. That's
because on almost alll UNIBUS controllers, DEC was in the habit of putting
the A16/A17 bits of the buffer address in the CSR (usually in the 060 bits).
So they could only handle 18-bit DMA addresses.
Early QBUS contollers just copied that, so that they were then 100% software
compatible. That's why the RLV11 and RLV12 differ a bit: the RLV11 is 18-bit
address only; to add 22-bit capability to the RLV12, they had to add an extra
register (the RLBAE).
(Interestingly, the Dilog card above claims to the RKV11 compatible; but also
says it has "memory addressing capability" to 256KB. They can't both be true,
though; although the RKV11-D has the A16/A18 bits in the CSR, they aren't
connected to anything! See EK-RKV11-OP-001, pg. 3-5.)
Noel
This item:
https://www.ebay.com/itm/383837694443
(described as just an "EIA distribution panel" in the listing) turns out to be
a DZ11 distribution panel, if anyone needs/wants one. The price is vaguely
reasonable, but maybe the seller would accept a lower offer.
Noel
> From: Al Kossow
> I have to find my qbus rk11 card.
The RKV11-D is a set of 4 quad cards (3 of them the same as the RK11-D) and a
custom 4-slot backplane (different from the RK11-D's), along with another
dual QBUS card, connected via flat cables. It was apparently usually supplied
by DEC in a mounting box of its own.
Noel
> From: Al Kossow
> it's a single-card controller made by Xylogics.
Ah; never heard of that. If you don't mind indulging my curiousity, how did it
connect to the drive (if it used RK05's, and not a Diablo, or something)?
Normal flat cables to a dual card (like the RKV11-D), or a connector on the
back edge (like a UNIVERTER; so it could use a BC11A cable)?
Noel
