We use a Strata XXe phone system in our house, and after working just
fine for many months, it suddenly went completely dead. No phones, no
lights, no power light - nothing. We have checked the power supply,
and none of the 4 breakers or 5 glass fuses seem to be blown. There
was a diode near a bank of large capacitors which appeared to be
shorted - it or something near it had gotten hot enough to blacken the
PC board a bit. Replaced said diode with no change in status. AC is
present on the primary and secondary of the line transformer, but
that's about it. Primary bridge rectifier is fine. Anyone (Sellam,
maybe?) have a schematic for the HPSU-9120 power supply (or a cheap
source for a replacement)? We purchased a downloadable PDF of the
installer's manual some time ago, but it doesn't have schematics. It
indicates that you should try swapping out power supplies and/or
checking the output voltages of the supply and replace it if they are
incorrect. So much for that... Suggestions?
-Bill Richman (bill_r(a)inetnebr.com)
Web Page: http://incolor.inetnebr.com/bill_r
Home of the COSMAC Elf Microcomputer Simulator, Fun with
Molten Metal, Orphaned Robots, and Technological Oddities.
>Will a Dayna EtherPrint-T work for connecting, say, a LocalTalk Mac into an
>EtherTalk network, or does it only work for printers? In other words, is it
>a true LocalTalk-to-EtherTalk bridge?
I think it will work as a true LocalTalk to Ethernet bridge.
However, you may need to change a dip switch on it. IIRC, the Dayna has a
couple of switches on the back that tell it what localtalk address range
to look at, one direction is low addresses (CPUs) the other is high
addresses (CPUs or Printers). If you check your AppleTalk control panel,
you can see what your current AppleTalk address is (1-255, the break in
the Dayna I think was at the 128 point, splitting the addresses in half).
Many Macs auto assign into the lower range, so you might have to flip the
switch to see it.
Of course, I could be thinking either of an older version of the box, or
of the wrong box, so you might want to double check (I think there is
still tech info on Dayna products off Intel's web site.
If you are looking to buy one, and want to know for sure, let me know...
I have a Dayna box at work that I can hook up and test. I have had it
sitting on a shelf since I got it, I have never used it since I have an
Asante one that is half the size. (Don't know if it is the
EtherPrint-T... actually, I think it is not, as I think it only has AUI
and BNC connectors on it... but I am fairly sure it carries the
EtherPrint name, so hopefully the only difference is the RJ-45 connector)
-chris
<http://www.mythtech.net>
Rainbow owners,
I did get a request for the mods to make a Rainbow run with an NEC
V20. Info below is from a reprint from the Rainbow News; unfortunately I
don't have the date or the original issue, only the reprint. The article
does carry the notation, Copyright (c) 1986 by Carl Houseman, all rights
reserved, which means I'm probably about to get myself into potential legal
trouble here. Carl, contact me if you are listening, I'll try to work out
something you are happy with.
Paraphrased heavily, the reprint says there is a 5% speed
improvement overall, with up to 33% improvement (max.) for routines using
the "fast video" firmware options. GW-Basic has a problem with displaying
characters in the medium resolution graphics screen, and a hard disk
diagnostic (test #4, seek time) doesn't work.
There is also a set of problems with booting, but these are
supposed to be fixed by the below modifications to the boot EPROM (though
the article includes the expected YMMV-and-your-machine-may-explode kind of
disclaimers). The EPROM is, for a Rainbow 100B or 100+, a 27128 PROM. If
you install a V20, that EPROM (located between the connectors for the hard
disk option) should be duplicated with the following changes:
Location Data
-------- ----
072F 64
08E6 E8
08E7 17
08E8 36
08E9 90
0B36 20
3F00 51
3F01 B9
3F02 04
3F03 00
3F04 D4
3F05 0A
3F06 E2
3F07 FC
3F08 59
3F09 C3
3FFE EC
3FFF B2
For a PC100A, the Hard disk problem is irrelevant, the EPROM is a 2764, and
the change list is:
Location Data
-------- ----
043F 64
067D 20
1FFE 2B
1FFF 70
Let me know if you try it; I have not. Good luck!
- Mark
On April 20, Sridhar the POWERful wrote:
> > > > It does so! Just the basic unit of nature they picked was not a real
> > > > basic unit - it was the earth! The meter was something like 1/10,000,000
> > > > the Earth's curumfrence going thru Paris and the North and South poles.
> > > > The Kilogram's (derived from the meter ) volume was filled with water
> > > > and thus you got a unit weight.
> > >
> > > <PEDANTIC>
> > > Ahem. Kilograms don't measure weight. Newtons measure weight.
> > > </PEDANTIC>
> >
> > Oh MAN. We could shove charcoal briquets up his butt and make
> > diamonds. ;)
>
> Let's leave your homoerotic fantasies out of this, Dave.
Freak. ;)
-Dave
--
Dave McGuire "Mmmm. Big."
St. Petersburg, FL -Den
On Apr 19, 20:36, Don Maslin wrote:
> On Sat, 20 Apr 2002, Tony Duell wrote:
>
> > > I've kludged together cables for a PDP-11/34 by using the pins
> > > out of those 4-pin Molex connectors that are normally used on
> > > disk and tape drives. We just stuck the pins in the appropriate
> > > sockets and left it at that! Being careful not to pull on the
> > > wire, of course.
> >
> > Couldn't you get a strip of plastic and drill some suitable (stepped)
> > holes in it to hold the pins? OK, it wouldn't lock to the socket, and
it
> > would probably fit either way up, but at least the pins would be kept
in
> > the right sequence.
> Another possibility, depending on the shape of the receptacle recess,
> might be to encapsulate the pins(?) with RTV. Same caveats as Tony
> cited above.
Yet another revolutionary idea might be to buy a few of the correct
housings :-) They're made by AMP, by the way, not Molex. They're readily
avaialble from any AMP supplier, and very cheap.
--
Pete Peter Turnbull
Network Manager
University of York
On April 20, Sridhar the POWERful wrote:
> > It does so! Just the basic unit of nature they picked was not a real
> > basic unit - it was the earth! The meter was something like 1/10,000,000
> > the Earth's curumfrence going thru Paris and the North and South poles.
> > The Kilogram's (derived from the meter ) volume was filled with water
> > and thus you got a unit weight.
>
> <PEDANTIC>
> Ahem. Kilograms don't measure weight. Newtons measure weight.
> </PEDANTIC>
Oh MAN. We could shove charcoal briquets up his butt and make
diamonds. ;)
-Dave
--
Dave McGuire "Mmmm. Big."
St. Petersburg, FL -Den
I would like to identify the book that was my first book on computers, with
which I learned BASIC on a diskless TRS-80 Model II in the fifth grade. The
book was small, about the same size as a TV Guide but maybe twice as thick.
It had a blue cover, I think, with maybe a drawing of a TRS-80 on the front.
Does this ring any bells?
--
Jeffrey Sharp
jss(a)subatomix.com
>
> On April 18, Sridhar the POWERful wrote:
> > > > Except that a real PDP-11 will probably be a good deal more stable than a
> > > > PC. And how are PC's running windows at things like realtime data
> > > > acquisition?
> > >
> > > My computer ( 600 Mhz ?? ) states not to use the seriel port faster than
> > > 9600 because the internal modem uses the irq line. sigh!
> >
> > *shakes head*
> >
> > Pathetic.
>
> Pathetic indeed. The pdp-11/34a that I had when I was in high
> school...I think I babbled about that machine at one point. I had a
> DH11-AD mux in there (16 lines, modem control, DMA...a 9-slot
> backplane full of boards), it had my terminal and another terminal in
> the house, both running at 9600 baud, and a 1200 baud modem for
> dialin...It would keep up with me and two friends using kermit to move
> stuff back & forth, or hacking code (yay Swedish Pascal and DECUS C!)
> with no problems at all...three sessions, two at 9600 baud and one at
> 1200 baud...simultaneously. Without even feeling the bump.
>
> Why do people use PeeCees, again? Pathetic, indeed.
In this case a better question might be, why is he using an Internal modem?
OTOH, it sounds as if he might only have one Serial Port and an internal
modem, now that's pathetic!
Still, I use ethernet a lot more than I do serial ports, though I did toss a
8-port DHV-11 (I think that's the right model) in the PDP-11/23+ I put
together last week, along with the ethernet adapter.
Still PC's aren't all bad, I've got a 1Ghz Pentium III that makes a very
nice PDP-10 and PDP-11, I've had TOPS-10, TOPS-20, RT-11, and RSTS/E all
running on it at the same time.
Zane
Will a Dayna EtherPrint-T work for connecting, say, a LocalTalk Mac into an
EtherTalk network, or does it only work for printers? In other words, is it
a true LocalTalk-to-EtherTalk bridge?
--
----------------------------- personal page: http://www.armory.com/~spectre/ --
Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu
-- Burglar alarms: For the man who has everything! ----------------------------
i'm now in search of anything pertaining to the Bay Networks 16/4 BayStack
Token Ring Hub with Fiber MDA RO/RI, 24port RJ45. Documentation, manuals,
software (it does seem to have a DB9 "console" port on the back)? it is
currently working well on my little network of 3 token ring machines (one
P-III 850, one Athlon 750 and one P-II 350), where i get link, 16M, FRM,
Mgt, etc. steady Green. One thing that bothers me though: WTF is NNM and
DCM and why are they flashing Green? also, is there a way to disable the
MDA module and why is it showing Snpx lit steady Green? there is no
connection to it currently. the hub does, however, link up nicely to the
3Com LinkBuilder FMS TR 12 that i also have through cascade port 1 on the
Bay unit and the internetworking port on the back of the 3com unit. main
goal: to make the P-350 my main linux netowrk server with my own web
hosting at some point and email hosting with dual or possibly quad token
ring going out to the network and having a singular ethernet AMD PC-Net II
(IBM badged) PCI for Ethernet going out to the router and out to the
broadband cable modem. i even went out and found the nifty yellow ethernet
cables (CAT5) that have soft rubber strain relief boots on them (really
nice and professional looking and obtained free). =)
-John
Note: next goal is to toss narrow SCSI into the linux box (it is still
partially built) and maybe have dual 9 gb or quad 4.x gb drives in it.
----------------------------------------
Founder, Lead Writer, Tech Analyst
and Web Designer Boff-Net Technologies
http://boff-net.dhs.org/index.html
---------------------------------------
