And of course my newly-tagged subject lines leak out when I reply. ;)
Sorry about that...I will either remember to trim them, or disable my inbound
subject rewriting.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Has anyone been able to successfully use SDSX.SYS under a Mapped
RT-11 Monitor? Or does it have a bug and if so, does anyone have a
fix?
For as long as I can remember, I have used SDX.SYS (= SDHX.SYS)
to debug my programs under RT-11. Unfortunately, the SDHX.SYS
variant freezes everything in RT-11 (all jobs, device drivers, monitor and
even the clock) when the program is stopped at a breakpoint.
Note that DEC supplies two variants of SDX.SYS which execute under
Mapped RT-11 Monitors:
(a) SDHX.SYS which is called HARD
(b) SDSX.SYS which is called SOFT
In both cases, the file of the chosen variant MUST be copied to SDX.SYS
before that variant can be used. Obviously, only one variant can be
used at a time.
Very recently, I had the occasion to link VDT.OBJ (the ODT variant
modified into VDT) into my program and I found that other jobs
were no longer frozen. I hoped that SDSX.SYS => SDX.SYS
might produce the same result. However, not only does SDSX.SYS
not perform in that manner, but as soon as I attempt to activate other
jobs (almost always, those other jobs are KED variants executing as
system jobs which display the listing for the potion of the program which
is being debugged) which are in an IOWAIT state (holding for keyboard
input), RT-11 usually crashes immediately, especially when the breakpoint
is in the RT-11 monitor.
Does anyone have any experience with SDSX.SYS which is different,
specifically when SDSX.SYS actually works and still allows other jobs
to execute at the same time while one job is stopped at a breakpoint
under SDSX.SYS and the other jobs are KED variants which are
displaying a listing of the program which is being debugged. While
SDHX.SYS works perfectly, since it freezes everything when the
program is stopped at a breakpoint, I had hoped that SDSX.SYS
would allow the other jobs to move to other portions of the listing
as other portions of the code were being executed, often instruction
by instruction. In case this information is helpful, the other system jobs
which are executing KED variants have opened the listing file in
READ ONLY / INSPECT mode, and no other file requests are
being executed. I had somehow hoped that if VDT could execute
correctly but still allow other jobs to continue, that SDSX.SYS might
also allow that as well.
Can anyone help or at least comment? Am I doing anything wrong?
Is there a bug in SDSX.SYS which no one else has found? While
I am using a Mapped Monitor which has Multi-Terminal support,
the same problem is present when the DEC distributed monitor,
RT11XM.SYS without Multi-Terminal support is used. While
<CTRL/X> must be used with the same terminal to re-activate
a system job, when SDSX.SYS is used, the same problem occurs.
So does SDSX.SYS have a bug and if so, does anyone have a
fix?
Jerome Fine
On 2013-04-19 19:00, dwight elvey <dkelvey at hotmail.com> wrote:
>
> For the 16 hole punches, I'm asking $35 plus postage.Dwight
I might be interested in an unpunch.
Fred Jan
On Sun, Apr 21, 2013 at 12:21 AM, Zane H. Healy <healyzh at aracnet.com> wrote:
> You might wish to include the general area you'd be able to collect one
> from.
Indeed. I have multiple terminals in central Ohio. Given enough time
to organize, I can even deliver to various classic-computer events
(since shipping is kind of a big deal with terminals).
-ethan
I am looking for a DEC VT100, or possibly VT102, to add to my computer
collection. I spent many years early on programming on VT100/102 series
connected to VAX 11/750 and VAX 4000. I've wanted to have one as my
terminal for quite some time. Does anyone know of a nice one that is
available? Thanks.
Ryan
Not to reignite a somewhat sensitive topic, but if anyone was
interested (like I was) in a publicly-accessible modern(ish)
IBM mainframe system, the FanDeZhi system at zos.efglobe.com
seems to be back up. You can acquire a free account here:
http://zos.efglobe.com/cgi-bin/mainframe/mainuser?F=APPLY
I logged in today and quickly discovered I have no idea what
to do. Time to read up...
- Dave
----- Original Message -----
Date: Sat, 20 Apr 2013 03:46:50 -0400 (EDT)
From: Mouse <mouse at Rodents-Montreal.ORG>
["MikeS" <dm561 at torfree.net>]
>> I happen to think that I not only have a legal right to choose what to do
>> with what most people would consider worthless junk, but that it's really
>> none of your business.
> Indeed. Until and unless you make it our business, such as by posting on
> the list about it.
Like I said, I've learned my lesson; since offering something for sale here
before it is scrapped is not appreciated and instead earns the censure of
folks like you who on principle won't buy it from me anyway, I'll avoid
offending you and simply offer it elsewhere and/or scrap it *without*
offering it first.
> Unless you are also Steven Landon (and maybe even then - see below), or
> unless you've pulled such a stunt in the past and I've lost track of it, I
> don't see why _you_ are getting bent out of shape over this.
I have no love or respect for Landon whatsoever but I can see myself saying
exactly the same thing, i.e. "I've got to get rid of some stuff and if I
can't sell it by YY/MM/DD then I'm going to give it to Goodwill" (where you
could presumably pick it up anyway if you're in a position to pick up in the
first place); thus, the critical replies and comments could just as well be
directed at me, which is why I stuck my nose in.
If I give it to Goodwill or scrap it I never have to think about it again;
no waiting for folks to show up who never do, no endless email exchanges, no
listening to their complaints, no seeing it on eBay for $100 the next day,
etc. etc. and I think I'm entitled to choose whether to put up with those
hassles without any compensation. If you think that making my choice clear
is emotional blackmail, then so be it.
> ...the response from someone who actually cares about the hobby instead of
> about yanking others' emotional chains would have been more along the
> lines of "oh $#!+, is that what they do? Then...", or perhaps "actually,
> I asked them and the real policy here is...".
I guess I accepted a long time ago that millions of tons of useful and
valuable stuff gets buried, crushed or melted down every day and I don't get
as emotional about it as you think I should; if I think it should be saved
and am in a position to do so, I will; what other people choose to do is up
to them.
Sorry if I'm not caring enough about the fate of old computers, or sensitive
and considerate enough of your feelings...
As I just replied to someone off-list, I find it sad and a little depressing
to see the animosity, *judgements* and personal attacks so prevalent on this
list, which is after all intended to bring fellow members of a community
together to share knowledge, experience etc. and in general help each
other...
I won an old 486 EISA motherboard on ebay missing a few chips most importantly is the BIOS.
Mylex MAE486-33 Rev P2, anyone have the BIOS file for it?
Manual says:
l Verify that the BIOS chip is a 28-pin, 27512
chip, with a 200 ns access time.
W For the MAE486 - verify that the BIOS chip
is marked "EISA BIOS 486 MAE rev xx"
I found the bios for the MBE486 online but that's a different board. And I did find the EISA config files.
I think it is missing the keyboard controller, and 2 Dallas RTC chips as well (have one of them at least). Working EISA 486 are getting hard to find.
Thanks
TZ
Hi all,
I'm going to get rid of my PDP11/45. The processor is complete, and has
solid state memory (non-DEC), and has power supplies. There is also an RK11
backplane in the processor box (may have some spare cards somewhere). The
machine has not been powered for 5 years, and will need the power supplies
looking at.
There is also a unibus expansion box, with power supply (no cards / options
fitted), and an untested RK05 drive.
This is all in an original DEC cabinet with side panels and rear door.
The machine is to be collected from Southampton, UK.
I am open to reasonable offers (I know roughly what I want, but I'll see if
I have the value about right!).
Thanks
Jim.
I was emailing with someone recently -- as in the last few weeks --
who was interested in one for the cost of postage from the UK.
However, foolishly, I have lost the email thread. (I have 22,512
threads in my inbox.)
If you're interested, do please drop me an email. I've dug the machine
out to check it boots, and I have found a suitable (well, slightly
overlarge) box.
--
Liam Proven ? Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 ? Cell: +44 7939-087884
