So, what I said ("there is no switch on the front panel of the 03
to control on/off") is still true :-) , but I had not thought of
using LTC (or AUX) for that!
Using that switch to turn on/off power to the 11/03 via the 861
is a nice idea. But checking the LTC/AUX wiring before 'mis'using
the switch for on/off control is indeed even more clever :-)
thanks!
- Henk.
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Pete Turnbull
> Sent: woensdag 4 januari 2006 9:13
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: DEC 874-A Power Conditioner
>
> On Jan 4 2006, 8:22, Gooijen, Henk wrote:
> > Hi Richard,
> > I have one 11/03, but AFAIK (I'm at work now) there is no switch on
> > the front panel of the 03 to control on/off.
>
> There should be, on all BA11-M, BA11-M, and BA11-S boxes
> (except some expansion boxes that have no LED/switch panel at
> all) though depending on the box, it may be labelled LTC or AUX.
>
> See, for example, http://hampage.hu/pdp-11/1103.html It's
> the rightmost of the three switches on the panel. Also
> http://www.abc80.net/pics/PDP11-23_cpu_2_big.jpg
>
> --
> Pete Peter Turnbull
> Network Manager
> University of York
This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law.
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If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message.
Thank you for your cooperation.
On Jan 3 2006, 20:40, Julian Wolfe wrote:
> AFAIK, there's only one panel for all 11/03, /23, and /23+ models,
they just
> come with different badges. You need a DEC power bus cable. Run it
from
> the connector on the CPU box to the power controller, set it to
"remote on",
> and flip the far right switch. Viola, power from the front panel.
Yes, but... on some QBus systems the switch is jumpered to control the
LTC (Line Time Clock signal) by grounding the BEVENT bus line. You
ought to check the jumpers on the little electronics board before you
wire an unknown system to the power bus. I've accidentally done it
with the wrong jumper settings and it's done no harm, but YMMV.
BTW, the connectors for the power bus are standard 3-pin AMP Commercial
Mate-N-Lock conectors, which are fairly easy to get.
--
Pete Peter Turnbull
Network Manager
University of York
> My guess is that it is not transitioning into 8088 mode correctly.
Figured it out - There is one fundamental difference between 16-bit mode of
the CPU 8085/88 and the CPU 8086/8087.
It needs RAM at FFFF0 in order to start correctly.
With the 8086/8087 the Disk-1A puts it ROM at FFC00-FFFFF which boots
the system. Since the 8086 has it's vectors at 00000, it never needs "high
RAM" again. With the 8085/8088 the system starts in 8085 mode with the
boot ROM at 00000. The loader (from disk) tries to write a JMP to FFFF0
before starting the 8088 - this was failing because I didn't have RAM there.
Putting my 64k board at Fxxxxx cured the problem and now it boots CP/M-86
reliably.
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html
Hi Richard,
I have one 11/03, but AFAIK (I'm at work now) there is no switch
on the front panel of the 03 to control on/off. However, if your
11/03 is mounted in a (small) rack you can add a simple plate
with an on/off switch. Any small switch will be fine, because
you switch approx. 20 VDC, not 230 VAC (or 115 VAC).
All the power bus connectors have 3 pins, and they are all wired
in parallel. IIRC, the middle pin is the return-GND, and when
looking at the plug-in side of the socket on the power controller,
the left one is power-on.
A simple test will confirm this. Just set the small switch to
"remote" and the short-circuit the 2 left-most pins.
If the main relay "bangs" in you got the correct 2 pins :-)
Wire the 2 pins to the small switch at the front side and you
have made the remote turn-of/off option :-)
- Henk.
> Hey! This is sounding familiar! My 11/03 has an 861 power
> controller on it and I have the three-position toggle switch
> as well. Thanks for explaining what those settings are! I
> had no idea what this meant when I first got the machine, but
> I had the switch set to "local on"
> and then the unit would power up.
>
> However, this idea that there's a way to powerup from the
> front panel on an 11/03 intrigues me! Unfortunately I see no
> obvious button that powers up the machine. Is this possible
> with an 861 and if there is not existing switch, what would
> you add to enable this feature?
> --
> "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ:
> <http://www.xmission.com/~legalize/book/>
> Pilgrimage: Utah's annual demoparty
> <http://pilgrimage.scene.org>
This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law.
If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message.
Thank you for your cooperation.
The Tektronix 4052 and 4054 series table top graphics computers were
also 2901 based.
Bob
Message: 14 Date: Fri, 30 Dec 2005 18:20:30 -0700 From: Richard
<legalize at xmission.com> Subject: AMD bit-slice machines To:
cctalk at classiccmp.org Message-ID:
<E1EsVQ6-0004lt-00 at xmission.xmission.com> Besides the Lilith Modula-2
workstation, what other computers were made from the AMD 29xx bit-slice
architecture?
--
Re: my PDP-11 (KDF11-BA QBus CPU) with RL02 and RLV12 controller:
Although I can read from my RL02 fine, and run the various XXDP
diagnostics, any attempt to *write* to the disk instantly causes
the heads to retract, the LOAD light to go out, and the FAULT lamp
to stay on. The write protect lamp works with the button and was
not on.
Running the diagnostics VRLB?? (Diskless Controller Test) & ZRLG??
(Controller Test 1) pass with no errors.
However, ZRLH?? (Controller Test 2, the first test that writes to
the disk) fails as follows:
CZRLH DVC FTL ERR 00300 ON UNIT 00 TST 002 SUB 000 PC:015044
RLCS HAD FOLLOWING ERR(S):
COMP DRV
WRT OP-INTR MODE
BEFORE COMMAND CS: 000313 BA: 003426 DA: 000000 MP: 000000
TIME OF ERROR: CS: 140312 BA: 004026 DA: 000001 MP: 000667 003400
174000
followed immediately by another fatal error "COMP OPI RD HDR
OPR'TN-FLAG MODE".
While the RL02 was still in Fault mode, I also entered the
"Toggle-In Program" from the RL02 Disk Subsystem User's Guide,
Appendix C and it returned 102210 which is WGE (Write Gate Error)
i.e. either Write Protect was set, or a sector pulse occurred
during the write operation.
I think I should be looking inside the RL02 on the logic board but
can someone with more diagnostic-pack experience tell me if this
is actually a controller problem?
thanks
Charles
Hi Philip,
thanks for your comments!
> > Can the code be modified (e.g. is it possible to implement
> > an other CPU?)?
> The Inverse Assembler toolkit was on Agilent's FTP site a few
> years ago. I'm not sure where you could get a copy now, though.
> The assembler works fine on pretty much any machine, but IALDOWN
> is very fussy.
I did some search and was not able to get hands on a
copy of the "Inverse Assembler toolkit". :-( But still I
think, that the source code of IALDOWN might be interesting
fo lot of people using 1600 analyzers. Since you used the NI
library it should be easy to port it to other libraries:
the NI library is somthing like standard for GPIB. Maybe
I will be able to locate the "Inverse Assembler toolkit" in
the future and than I'd be interested, too!
Maybe the linux-gpib-project's people are interested as
well (search for "hp1630 logic analyzer sourceforge" within
google groups).
Last but not least I consider the HP1600 analyzers very
well suited for debugging and maintaining classic comps
and I am happy to have one ;-)
Best regards,
Erik.
> Why isn't there a hint on bitsavers - like a cgi which calls "du
> -h"....?
The issue hasn't come up before. Generally people have asked before
mirroring the site. It is around 43gb right now.
Also, I'd prefer that people use ftp rather than things like Wget
for mirror maintenance.
Wget's of the whole tree sets off a bunch of red flags which
normally results in your IP being blocked at the firewall
(This happened twice today..)
Does anyone have one?
They apparently were crappy designs and tended to die fairly readily,
making them hard to find. They were manufactured in Salt Lake, but I
haven't seen one since I used them in Delaware around 1980!
--
"The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ:
<http://www.xmission.com/~legalize/book/>
Pilgrimage: Utah's annual demoparty
<http://pilgrimage.scene.org>
From: "Roy J. Tellason" <rtellason at blazenet.net>
Subject: Re: Speaking of 6502s, was Re: 70's micros still available -
was 1802 problems
<snip>
>Big question for either of these, though, is source available?
<snip>
KIM and AIM65 data sheets, schematics & monitor source listings
can be found on R. Cini's excellent site:
http://highgate.comm.sfu.ca/~rcini/classiccmp/
m
