>
>Well, scratch the idea of OS/2; my CD has a big scratch in it and is
>unreadable.
>--
>Eric Dittman
In some cases it's possible to remove the scratch by polishing the CD. I've
taken badly scratched CD's and removed the scratches with a buffing wheel,
jewelers rouge, and a little patience. Just be careful not too overheat the
CD or it may warp.
The ones that I've done came out paper thin but, were readable.
SteveRob
_________________________________________________________________
Send and receive Hotmail on your mobile device: http://mobile.msn.com
> On 04-Jan-02, Gordon C. Zaft wrote:
> > At 10:04 PM 1/3/2002 -0800, Ron Hudson wrote:
> >
> >> A true navy story from my Navy days.
> >
> > When I was a Navy civil servant, every engineer who went out on
> > his first ship qualification trial would get hazed. Usually it was being
> > sent to get batteries for the sound-powered phones....
>
> My favorite was always sending someone for a bucket of
> steam....that or a snipe punch.
Stud stretchers are popular with the contruction crowd...
New pages to Congress are given important messages to
give to Senator Cornpone...
And to get this back on-topic, at IBM, new hires were
sent to see Dr. Herman Hollerith to get the final answers
on important questions.
-dq
> ps -- i am not a warez dood - dont own a cell phone - and have never
> instant messaged anyone
I confess to having used TALK/NTALK/YTALK under Solaris once
or twice... and in the old days, using SEND TTY under TOPS-10
seemed really cool... now I see it a bit differently.
-old fogey
Hi all geeks!
I have two Compaq 286 machines that I am trying to put back together.
Unfortunately, I'm having some issues reattaching the harddrives and floppy
drives to the drive controller cards.
I seem (stupidly) to have forgotten how they go when I unplugged them. I
know, I know, it's dumb, but help a guy out anyway? :) I promise to be good
the next time, honest.
Anywho, if any of you have documentation that you can email to me, I would
appreciate, or if you can explain how to reattach the cables from the
harddrives and floppy drives to the card, I would most grateful.
Configuration appears below.
Personal email: tarsi(a)binhost.com
Thanks,
Tarsi
---------------
Configuration:
Compaq Deskpro286 Model 2550
Harddrive controller: WDC WD1002-WAH
J1 is a 33 pin
J2 is a 19 pin
J3 is a 19 pin
Floppy drive/Printer board, has one 33 pin floppy connector
Standard(?) 5.25" floppy drive, 33 (34) pin cable.
Seagate hard drive, one 19 pin cable, one 33 pin cable.
My confusion is mostly whether J2 or J3 should be used with the harddrive,
and what the difference is.
Also, can I put dual harddrive in there? If so, how?
Thanks a mil!
--
----------------------------------------------
Homepage: http://tarsi.binhost.combinHOST.com: http://www.binhost.com
Forever Beyond: http://www.foreverbeyond.org
----------------------------------------------
well glenn the statement was not meant to be confined to computers.
most people prabably including you have a richer life that just
working with computers.
sure i program.
i know when to be precise, and when i dont need to be.
i'm sure you do to.
i look at the mail and see an ad for something and i know
im not interested , so i dont worry about which store
is sending this junk to me. [trash can time]
when i program i concentrate on being precise.
whats so hard to understand about that.
being a programmer you must be pretty good
concepts. this is a simple one
Joe
Just got myself a Toshiba T3200SX laptop. Reformatted the hard drive and
put DOS 6.22 onto it. However, the CMOS backup battery has gone flat.
Anybody know where the battery lives, and is it PCB mounted ?
Best Regards
Chris Leyson
> From: Golemancd(a)aol.com
> This is becoming a pretty silly thread because there can be
> understanding
> without proper grammer ; if we are being technical here.
Every computer I ever met would gag on the above statement ;>)
> Sure there is
> meaning,
> u just dont understand it.
Well, I've seen lots of COBOL and BASIC programs which fit this
description, but that
doesn't mean it's okay.
> I get your point. I do use a lot of shorthand and because this is
a
> hobby
> i dont focus very much on my grammer. If u see me post then dont read it.
> That is all that i have to say about this matter.
>
> joee
>
> P.S i hope the grammer helps you understand this.
I have no idea what your involvement with computers is, but I'm certain it
doesn't
involve programming . . .
Glen
0/0
Gooijen H wrote:
>The 11/53 has an H9278-A backplane. According to
>Megan's fieldguide the first 3 slots are Q22/CD
>and the last 5 slots are Q22.
>What does that mean?
The slots each allow for four "fingers"
on each card - a quad card uses all four
and a dual card uses only two (there are some
single cards too, but not many).
The holes on the backplane slot for the
fingers are labelled A,B,C,D from left
to right from the side the cards plug into.
Q22/CD slots have A/B wired as Q22 bus, C&D
are just wired straight through. C/D are not used
for Q-bus comms and are just for card-card
communication.
Q22/Q22 slots have Qbus on A&B and Qbus on C&D.
It sounds like in your machine, the path
followed by the Qbus is:
slot-1: A/B
slot-2: A/B
slot-3: A/B
slot-4: A/B
slot-4: C/D
slot-5: C/D
slot-5: A/B
slot-6: A/B
etc.
i.e. Qbus goes down A/B in slots 1,2,3,4
and then hops over to C/D on slot 4, drops
vertically down to slot-5 C/D, moves back
to slot-5 A/B ... repeat until you run out
of slots. The manuals refer to this as a
serpentine pattern. There is a diagram in
some of the MicroVAX manuals on
http://208.190.133.201/decimages/moremanuals.htm
(I cannot remember exactly which ones but if you pick up
the 630Z Owner's and Technical manuals, I'm 90% certain
one of them has the diagram ... note that BA23 has 3
Q22/CD slots and BA123 has four Q22/CD slots ... the
principle is the same though).
The Q22/CD distinction matters in two cases that
spring to mind.
The first is that some Qbus signals need to
be passed on to the next card correctly
(interrupt and grant signals). An empty slot
breaks the chain here. So if your first three
slots have processor + memory and you put a
TQK50 controller in slot 4 (A/B) and an RQDX3
in slot 5 (A/B), the chain is broken because
slot 4 C/D and slot 5 C/D are empty - you
need grant cards (or other Qbus cards) in there
to let the RQDX3 work. Just to make this more fun,
the RQDX3 will show up on the bus (it's CSRs
are visible) it just won't work :-)
The other reason it matters is that quad wide
cards need to do the right thing depending on
the kind of slot they are in. Most seem to arrive
defaulted for a Q22/Q22 slot (which means they can go
straight into a BA23/BA123 chassis with no
additional jumpering etc). Putting one of these in
a Q22/CD slot is usually no problem except that the
card is passing on the C/D signals to the next
card. This may or may not matter. For those cases
where it does matter, cards provide a means of
preventing this from happening. On the KDA50
there is a zero-ohm link (looks liek a resistor)
that you remove. Of course, if you move a modified
KDA50 from a Q22/CD slot to a Q22/Q22 slot you
are in for some fun :-)
Later series chassis (certainly the BA200 series,
probably the BA400 series) were wired Q22/CD
throughout.
>At this moment, this is the configuration:
>slot 1 rows 1-4: M7554-02 - 11/53-PLUS CPU
>slot 2 rows 1-2: M3106 - 4-line async EIA MUX
>slot 3 rows 1-2: M7546 - controller for TK50
>slot 4 rows 1-2: M7555 - RQDX3
> rows 3-4: ???
>All other slots and not mentioned row positions are empty.
>In slot 4 rows 3-4 is a card with just one 8-pos DIP switch
>three 16-pin DIL resistor chips and some decoupling caps.
>At the top are two BERG connectors, one 40 pin and one 50 pin.
>These two flatcables connected to an external unit, brandname
>Dynafive. Inside that box are several "Dynafive" boards and
>one board of "VGScientific". The rear of the box has several
>BNC connectors with markings that pops 'video' stuff to mind.
>Like H-sync, Green-in, Red-in, Green-out, etc.
>This box and the 11/53 were connected to eachother. On the
>disk in the 11/53 I found .RNO files that describe the VGS5000
>and how to use the application (something with spectral analysis).
>So far for the system description.
Many years agon, on a PDP-11/23, we had an external box
(about the same size as the 11/23 cab - including RL02 and
RX01) which was just a frame buffer (i.e. video card).
Your peripheral may well be similar (but this is just
a guess based on the fact that it seems to have
video connectors!)
>1) Can I remove that ??? card
I guess yes. Obviously you loose a really
cool peripheral!
>2) Put a DELQA or DECNA at the same position?
You can put a DELQA there. You can put a DEQNA
there (which is what I guess you meant). But a
DECNA is (IIRC) the really *rare* ethernet card
for the Pro 300 series of machines. It won't
fit and you'd destroy a cool card if you
put that there :-)
>I seem to remember that the RQDX3 must be the last device in
>the backplane for some reason.
It doesn't *have* to be. The reasons for putting
cards in a particular order is described in
one (or more?) of the Micronotes that you can find
on the web
(e.g.
http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/hardware
/micronotes/numerical/ )
Basically, the RQDX3 will hog the bus given half
a chance, but has enough buffering not to mind
yielding the bus to other peripherals (within
reason). The nearer (electrically) you are
to the CPU, the higher your priority. So the
RQDX3 (and KDA50) traditionally go furthest
>from the CPU.
>So, should the Ethernet card go in slot 4 rows 1-2 and should I
>move the RQDX3 to slot 4 rows 3-4?
That would be normal. It will probably work even if
you don't move the RQDX3 though.
It's worth mentioning that the RQDX*2*/RQDX*1*
are brain-dead and do not pass on one of the
signals (GRANT I think). This means that they
*must* go at the end of the bus (nothing after
them will ever be able to interrupt!)
Antonio
I got in the 11/53 running Micro/RSX.
The 11/53 has an H9278-A backplane. According to
Megan's fieldguide the first 3 slots are Q22/CD
and the last 5 slots are Q22.
What does that mean?
At this moment, this is the configuration:
slot 1 rows 1-4: M7554-02 - 11/53-PLUS CPU
slot 2 rows 1-2: M3106 - 4-line async EIA MUX
slot 3 rows 1-2: M7546 - controller for TK50
slot 4 rows 1-2: M7555 - RQDX3
rows 3-4: ???
All other slots and not mentioned row positions are empty.
In slot 4 rows 3-4 is a card with just one 8-pos DIP switch
three 16-pin DIL resistor chips and some decoupling caps.
At the top are two BERG connectors, one 40 pin and one 50 pin.
These two flatcables connected to an external unit, brandname
Dynafive. Inside that box are several "Dynafive" boards and
one board of "VGScientific". The rear of the box has several
BNC connectors with markings that pops 'video' stuff to mind.
Like H-sync, Green-in, Red-in, Green-out, etc.
This box and the 11/53 were connected to eachother. On the
disk in the 11/53 I found .RNO files that describe the VGS5000
and how to use the application (something with spectral analysis).
So far for the system description.
Now my question.
1) Can I remove that ??? card
2) Put a DELQA or DECNA at the same position?
I seem to remember that the RQDX3 must be the last device in
the backplane for some reason.
So, should the Ethernet card go in slot 4 rows 1-2 and should I
move the RQDX3 to slot 4 rows 3-4?
TIA,
- Henk
> > sometimes i forget that computer folks r technical people.
> > i come from the arts where the only thing that is needed is
> > understanding.
> > i am on stage sometimes and all the musicians do is
> > just nod or look at each other and everyone understands them.
>
> Yes, but they try to use established conventions for note pitches,
> time signatures, keys, chord structures and all the other syntax of
> musical language...you'd have to in my band anyway ;-)
So, Stan, give us a nice twelve-BARR ClassicCmp Blues standard...
;)
-dq