Thanks alot for your advices and the links, Ethan.
> No. There are 1MB boards for the 11/24, but they are somewhat odd,
> IIRC. I have an 11/24 at home with a KT24 (M7134?) Physical Address
> eXtension (PAX) board that lets you put more than 256K of memory in
> the 11/24, giving it a slight edge over the 11/34, at least in terms
> of max memory (the 11/34C might be able to crunch numbers a bit
> faster).
> I reasonably confident that the 11/24 and 11/44 used the same memory.
> For 256K boards, it should be the M8722 (MS11-MB). Grubbing around on
> http://www.pdp11.co.uk/search/modules.ehtml?name=ms11&submit=Search
> seems to suggest that the 1MB version is the M8743 (MS11-PB), but I
> don't have my hardware close at hand to check my own machines. Max is
> 4MB (as with any 22-bit address bus).
My 11/24 _uses_ the KT24 Mapping Module with the suggested MS11-PB, giving it 1MB of ECC Memory.
I can guarantee, that this combination works :^)
There's another board, I own: a MS11-LB (M7891-BB) with 128kb.
But I suppose that it doesn't make much sense to put this one together with the MS11-PB. The Ms11-PB is certainly
much faster than the MS11-LB.
Unfortuantely, the National Semiconductor boards can't be used, they were built for a VAX 11/750...
Currently, I have some problems to get this baby work.
There is a strange malfunction: When typing in some letters or digits on the keyboard (VT420), the screen turns
out some sort of random characters at the @-pormpt.
It's very weird !
Sometimes, when I turn it off and on to give it another try, it becomes impossible to type something.
The prompt is waiting, the cursor's blinking and the machine try to bootstrap, when pushing the boot-button,
but I simply can't type in anything !
The grant und bus connections are closed. The terminal works perfectly on local mode.
The "Clock" LED is on, in fact, never turns off, while the 1-LED (the one next to the Clock-LED) turns on when the PROM
for the CPU diagnostic is loaded (@165004g).
After that, both LEDs remain on.
The Maintenance Card for the 11/24 isn't on the internet (at least, I didn't find it), and there, the LEDs functions are described.
Could anybody give me some help on this ?
Pierre
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Hi,
To re-iterate a CCTalk thread I found that was two years old, anyone got
any documentation on one of these things?
(I picked up one off of EPay cheap, in a vague attempt to get some
networking into a IIgs)
I've found this page here:
http://www.walshcomptech.com/fastpath5/
That site had a little software for the FastPath 5, however, I've not
had the opportunity try it out. (None of the Apple boxes I have access
to have any sort of network in them. Powerbook 540c, and of course the
IIgs.)
So, anyone seen any other documentation on the things, on the web?
Thanks!
/me goes back to googling for doc's...
David
> Al, are you indicating that a) your copy of the book has been scanned
correct. I'm not sure I'm comfortable with putting it on line, however.
also, it is a VERY strange book. I pulled it out again just to refresh
my memory about just exactly what they were trying to do with this project
while you could consider it a 'computer', it is not an 'automatic computer'
every switch (all those little things made from paper clips) are operated
manually.
Hi folks,
Happy festive stuff :)
Does anyone have pinouts of the aforementioned chip? I can do the 8500 but
not the 8600 which allowed horizontal movement amongst other things......
Thanks!
--
Adrian/Witchy
Creator/Curator of Binary Dinosaurs, quite probably the UK's biggest private
home computer collection.
www.binarydinosaurs.co.uk - the online museum
www.aaghverts.co.uk - *the* site for letting you moan about adverts!
www.snakebiteandblack.co.uk - former gothic shenanigans :(
Hi list,
I have here a DEC documentation set for the VT220 (its outer cardboard
cover says VT200, though).
It contains:
VT220 Owner's Manual (EK-VT220-UG-003)
VT220 Installation Guide (EK-VT220-IN-002)
VT220 Programmer Pocket Guide (EK-VT220-HR-002)
It also contains the following:
VAX Language-Sensitive Editor VAX Fortran Pocket Guide (AA-EV45A-TE)
MicroVMS User's Pocket Reference (AA-Z211C-TE)
MicroVMS Programming Pocket Reference (AA-Z214B-TE)
These are all free to whoever wants them (unless any of the Bitsavers
guys need them for scanning, in which case they get first refusal).
You pay shipping.
Usual 21 days before they get recycled, so move fast. Replies by
private mail please.
Ed.
Hi,
Does anyone know where I can get TMS9980 and TMS9901 chips from?
They're never on eBay. I tried a chip broker who had a large stash, but he wanted
200USD per chip!
I'm trying to get my old TM99/U89 system going and the 9980 and 9901 chips have
corroded badly and lost a leg or two.
I've been told the 9980 was in some old pin-ball machines, so I'm currently hunting
down these sites to verify this.
seeyuzz
river
A while ago I asked if anyone on the list could help me get AutoCAD 12 for DOS.
Several people came through and I now have a copy. Thanks, everyone!
As expected though, it doesn't work and play nicely with Windows XP. I was
hoping that just running it through a command prompt window and giving that
giving the Win 95 compatibility attribute to the acad.exe file would make it
work. It didn't and I got a strange error message:
"Phar Lap err 74: Can't use -REALBREAK under this version of DPMI"
So I Google that and found a few threads like this one:
http://discussion.autodesk.com/thread.jspa?threadID=314
Apparently it's just not possible to run Acad 12 in 'real' DOS in XP. I
already knew XP's prompt is nothing close to real DOS, but I was hoping to find
a way to trick the program, or a way to emulate DOS perhaps. Anyone have a
clever solution to this? (I do have a suitable second PC to install real DOS
on, but I'd rather not have to dedicate a whole system just to use one program.)
=====
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Hey HP fans... Check out item # 5154313481 on ebay.
I have a stash of these, but none I want to get rid of yet. Evenso, I was
tempted by this one.
It's a 2100A, looks to be very good condition, and stuffed with a lot of
really nice cards. The seller put up some really nice photos of the all over
the unit and you can enlarge all of them to read the fine print on all the
card handles.
That system is pretty decked out... 32KW core, several 8-bit dup reg boards,
several CRT interfaces (I'd like one of those). 7970 Mag tape, 13210 (7900A)
disc controller set. Very nice.
If you're not an HP fan, you really should check out the front panel
pictures. Gorgeous - but then I'm biased :>
Jay West
Hi
It is true that capacitors can have nonlinear effects.
In most cases, the design is such that these effects are
vary small and only in cases where the capacitor is used
as a filter parameter that has a sharp cut off, does
this have measurable effects. This means that blindly
replacing all the capacitors is just plain silly.
Speaker wire is another interesting one. All wire
has impedance ( DC and AC effects ). No wire will ever
be the right impedance for an 8 Ohm speaker. Different
speakers are effected differently by the speaker wire.
I've done some AB test with wire and for at least two
speakers, I looked at. I could hear no difference between
6 feet of 12 ga. appliance cord and woven special speaker
wire. I doubt my hearing is good enough today to repeat
such test but at the time my heard was better than average,
being able to clearly hear TV horizontal outputs from any
TV across the room.
Dwight
>From: "Geoffrey Thomas" <geoffreythomas(a)onetel.com>
>
>Electronics World ran a series of articles called " capacitor sound " from
>July 2002.
>-Discussing how capacitor construction can affect the sound of a hi-fi amp.
>The author , Cyril Bateman , also did a few articles on loudspeaker cable
>sound , but I can't find those at the moment.
>
>Geoff.
>
>----- Original Message -----
>From: "Vintage Computer Festival" <vcf(a)siconic.com>
>To: "General Discussion: On-Topic and Off-Topic Posts"
><cctalk(a)classiccmp.org>
>Sent: Wednesday, December 29, 2004 10:31 PM
>Subject: RE: Speaking of eBay
>
>
>> On Wed, 29 Dec 2004, Tom Jennings wrote:
>>
>> > I'll believe anything with sufficient evidence, but solder alloys
>> > in a solder joint sounds like total crap to me -- unless I had
>> > a lot of rolls to offload on fools with more money than I ... :-)
>>
>> That's the thing mainly with these crazy audiophiles. Except for the two
>> examples you bring up, which seems like they have a technical basis to the
>> theory, most of it is just voodoo hocum that doesn't have any underlying
>> technical or scientific basis. One loon comes up with a wacko theory and
>> then it propagates until everyone is demanding special-alloy solder. Why?
>> They don't know, and they don't care. Some guy said it makes the
>> electrons happy so they have to get some too. It's completely naive.
>>
>> I want to see technical treatises explaining WHY, with scientifically
>> executed experiments backed up with empirical data, before I believe any
>> of this nonsense. I think these audio guys ought to demand the same.
>> They might save a few bucks.
>>
>> --
>>
>> Sellam Ismail Vintage Computer
>Festival
>> --------------------------------------------------------------------------
>----
>> International Man of Intrigue and Danger
>http://www.vintage.org
>>
>> [ Old computing resources for business || Buy/Sell/Trade Vintage
>mputers ]
>> [ and academia at www.VintageTech.com || at
>http://marketplace.vintage.org ]
>>
>>
>>
>>
>> --
>> No virus found in this incoming message.
>> Checked by AVG Anti-Virus.
>> Version: 7.0.298 / Virus Database: 265.6.6 - Release Date: 28/12/04
>>
>>
>
>
>
>--
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>Checked by AVG Anti-Virus.
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>
>
