Hi, I just repaired the powersupply of my pdp 11/44 and cleaned the box.
When powering up, the console terminal only shows:
(Console V3.40C)
(Program)
(Console)
?CP didn't start
>>>
I guess this is bad news....
Does it mean Central Processor didn't start? (just guessing, but the RUN-
light stays dark, DC-LED is on and the key works)
Since i don't have a manual for the 11/44 i really don't know where to
start. I searched the web for a scanned KD-11-Z manual, but found nothing.
The actual configuraton is minimal, I insterted the processor, cache, ram,
CIM and bus terminator like this:
A - B - C - D - E - F
M7090 X X X X CIM / CIS (option)
X X X X X X CIS (option)
--------M7093-------- FP11-F FPU
--------M7094-------- KD11-Z data path
--------M7095-------- KD11-Z control module
--------M7096-------- KD11-Z multifuncion module
--------M7097-------- KK11-B cache
--------M7098-------- KD11-Z UNIBUS interface
--------M8743-------- MS11-PB 1 Meg Ram
X X X X X X MEM (option)
X X X X X X MEM (option)
X X X X X X MEM (option)
X X X G X X UNIBUS
M9302 X G X X UNIBUS
G=Grant card.
I do have the "processor handbook pdp11/04/24/34a/44/70" (printed in 1981,
EB-19402-20) and tried some of the console commands. HELP works fine and
gives a lot of HELP-text, but doesn't help much: all other commands tell
me ?CP didn't start. I tried using the processor without FPU and disabled
cache, but nothing changes. All DIP switches and 'Jumpers' (soldered) are
still in default position.
What can i do now ?
Any idea is very welcome....
Regards, Lothar
PS: Would it be usefull to anybody to scan the (entire?) processor
handbook? I don't know how usefull this book can be to someone else...
At a surplus store today I saw a couple of rtVAX 4000-300 boxes. I don't
know anything about these types of systems. Are they interesting to people
on the list? What is their value without any disk drives? They were marked
$75 each.
They had KA670-BA cpus, which I guess is standard for that box according to
some info I just found googling around. They both had TK70 drives and at
least one had a TQK70 board installed, which I guess is the controller for
the drive. I'm not sure how much memory they had.
-Glen
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At 02:22 AM 7/20/02 -0500, you wrote:
>
>This system uses a Vertex V170 (60MB?) ST-506 drive. Is anyone familiar
>with them? I'm guessing I may just end up having to replace the drive with
>something else. Does anyone have any brands/models they'd suggest trying
>in this system?
I once attempted to repair one of HP's HP-IB hard drives used a Vertex drive internally. I THINK it was a V160 but I'm not sure now. I never did find a replacement that would work. IIRC I tried other brand drives but I couldn't LL format the new drive with the normal user stuff from HP so I don't know if the replacement drives were incompatible or ?? or if the replacements failed due to my inability to LL format them. I suspect you'll run into a similar problem. In addition, you'll lose all your SW if you replace the drive. If I were you I'd do my best to get that drive working again. The fact that it spins up initailly is a promising sign. I did look through my HP disk drive notes but I couldn't find anything that told what model HP used the Vertex drive.
If you find a useable replacement or manage to resurrect that drive I'd be interested in hearing what you learn.
Joe
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You may need to remove some bugs first.
Hi Ethan.
Yes, the RX11 (M7846) is programmed I/O only.
I checked the RX board yesterday for my NPR problem in the 11/70.
Indeed, the pins CA1 and CB1 are *not* wired on the board ...
back to the 11/70 thread with this result.
- Henk.
> -----Original Message-----
> From: Megan [mailto:mbg@TheWorld.com]
> Sent: dinsdag 16 juli 2002 6:19
> To: cctalk(a)classiccmp.org
> Subject: Re: NPR and the RX11 (was Re: help needed: problem
> with UNIBUS
> access on my PDP-11/70)
>
>
> The RX11 isn't DMA... when you give a command, it reads to a
> silo which
> the driver has to dump, a character at a time, or writes the
> silo which
> has been written, a character at a time...
>
> I just checked the RT-11 RX01 driver source to confirm it...
>
> Megan Gentry
> Former RT-11 Developer
John Boffemmyer IV <john_boffemmyer_iv(a)boff-net.dhs.org> wrote:
> As I imitate James Hetfield of Metallica... ATi Good. ATi GOOD! (instead of
> beer).
Or maybe Bobby 'Boris' Picket saying.... Mash Good
Or the Toyes parody of Bobby's song saying.... Hash Good
> Can't say anything good about the Compaq,
I hear that!
> I've repaired too many and worked with too many to go delving into my
> personal opinion...
Probably not too far from mine.
Since I already had a Portable III, hard to turn down another one.
The 5 1/4 went out on my first one and I replaced it with 3 1/2, so at
least this one is still 'original' equipment.
As far as later Compaq gear, give it to someone else, or gut it out for
useful items.
Mike
John Boffemmyer IV <john_boffemmyer_iv(a)boff-net.dhs.org> wrote:
> Damn you Mike. You always get the fun toys.
Now, now, John, be nice.
Actually I get my share of duds. I was testing a hard disk last night
and the software finally gave up saying 'You gotta be kidding'. Sounded
like the drive would spin down, then spin back up, 'chew' on the platters
a while, then spin down again.
The secret, John, is knowing what you will drool over. ;^)
Mike
Didn't we discuss a while back that HP82167 data carthridges were the
equivalent of some other type that is still on the market? These would
be for the HP 82161A drive.
Sellam Ismail Vintage Computer Festival
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* Old computing resources for business and academia at www.VintageTech.com *
Anyone have any docs for this beastie? trying to get it up and running,
need to know what sort of KB it uses, it looks like a funky RJ-45 ish KB
connection :( also, what OS' are supported on this machine? biggest Hard
Drive, etc..... and where can I find an OS for this machine???
