On May 11, 22:04, Pete Joules wrote:
> Subject: Acorn RiscPC 600 (OT - only 5 years old)
> Sorry for the post about a machine too young for the list but it is the
> first of its kind in my collection. The chips seem to be from 1994 and
the
> RiscOS (v3) splash screen also says 1994.
>
> This machine came to me as a box only having been an insurance write off
> because it jumped downstairs but there only seemms to superficial damage.
> It boots OK but the mouse which appears to be necessary in order to use
the
> OS is missing and appears to have a proprietary connector. Can anyone
tell
> me either if the mice are available?
It should be a 9-pin miniDIN, it's a proprietary mouse. The original one
for a machine of that vintage was a badged Logitech OEM mouse, but any
mouse that outputs raw quadrature signals (fours signals for X0,X1, Y0, Y1)
and three buttons (left, middle, right) will do. CPC
(http://www.cpc.co.uk/home.htm) sell Archimedes-compatible mice, as do
several Acorn dealers.
> Alternatively is it possible either to
> persuade it to work with a serial mouse or to wire in a PS/2 socket in
> place of the original one so that I can use a PS/2 mouse?
HENSA have some software packages that allow you to use a serial mouse on
the serial port (http://micros.hensa.ac.uk/platforms/riscos.html). You
can't use a PS/2 mouse directly.
> it seems to have 4M of RAM as 1 72 pin SIMM and 1 other memory board
which
> looks like a miniature DIMM. It also has a HDD with 59 Mb used and 159Mb
> free so it must be about 220Mb altogether, this make windows look a bit
> bloated as there appear to be some apps there as well - it also seems to
> boot very fast compared with modern machines.
Minimum sensible RAM is 4M, but it will hold up to 256MB, in 72-pin fast
page mode SIMMs (it doesn't need parity, but parity SIMMs will work), 70ns
or faster.
The other memory board is dual-ported VRAM for faster video access. Not
essential.
> Does anyone know what processor it has and how fast it is?
Originally, an Arm 610 on a daughter board. A 710 or 810 or StrongARM will
also work. Many people bought upgrades when they came out, so you often
see 610s or 710s for sale for ten quid or less. Or ask on one of the acorn
newsgroups; they're common enough and cheap enough that people often din't
bother to advertise them, and still have them lying around.
There's a fairly good Acorn FAQ which you can get from the usual sources,
and is posted to the Acorn newsgouops (comp.sys.acorn.*) regularly.
You really don't want this machine. I suggest you parcel it up and send it
to me :-)
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote:
After I wrote...
> > > > Hey. I've got one of those, just the IR hardware...
> > >
> Remember the entire CRT screen was visible through the hole in the middle
> of the board. So the board itself is a lot bigger than the CRT.
If what I've got is for a 9" CRT then I should be able to use it with a
PET!
-ethan
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Careful with that grease! Vaseline is likely to make some plastic alloys
soft, as it contains solvents for some of them. The clear grease most often
used in lubricating plastic gears, bushings, etc, is called "lithium grease"
and is available at most wholesale outlets which sell screws, nuts, bolts,
etc. by the box.
I have, by the way, found that a box of 100 of some of the more common
screws found in electronics is a really worthwhile investment and saves
money in the long run. This is especially true of metric sizes. Here in
Denver, it's the rule rather than the exception that hardware and car parts
stores sell both metric nuts and bolts, yet it's unusual to have bolts and
nuts of the same size as marked on the blister pack actually fit. I don't
know why this is, but it's a real pain in the gluteus maximus! I've never
had this result at Fasteners Inc. I guess that's why I'd rather buy the
small stuff by the box there rather than the handful at the hardware store.
Dick
-----Original Message-----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Sunday, May 09, 1999 2:59 PM
Subject: Re: Teac FD-55GFR 5.25" floppy drive
>>
>> Hi,
>>
>> On Fri, 7 May 1999 Tony Duell wrote:
>> > Take off the spring. I believe that you can normally take the collet
>> > apart further, but this isn't in the manual. Apply a smear of grease
>> > (either plastic grease or vaseline) to the spindle and reassemble. Put
>> > the spring on with the smaller end against the collet.
>>
>> Tried doing that, and it didn't help. It turns out that the C-clip was
>> vibrating, causing the noise; I should probably have figured that out
sooner.
>> Putting some grease in the groove that the clip fits into solved the
problem. I
>
>The C-clip should be a tight fit on the spindle. If it can move relative
>to the spindle, then it's too loose. It might be worth taking it off and
>either replacing it or squeezing it slightly.
>
>> guess using a hot-melt glue gun would do the job too. (Maybe this info
will be
>
>I am strongly of the opinion that if something is assembled with glue
>then it was designed incorrectly :-). And I would certainly never put
>glue on something that I might want to take apart later.
>
>> of use to someone in future?)
>>
>>
>> -- Mark
>>
>>
>
>-tony
>
--- Marvin <marvin(a)rain.org> wrote:
>
> I haven't heard anything about people going to Dayton except for Ethan.
I should have my 2m rig with me... I don't know what freq the show is
using for the public repeater, but I'm N8TVD.
> ...how to get in touch with anyone there, but I will be speaking at the
> ARDF forum Saturday morning...
I can keep that in mind. I _won't_ be there Friday; I have to earn the
money to buy the toys.
-ethan
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Guys:
I need someone to ID these WD devices for me.
They don't appear in any of the docs that I
have.
WD10C20A
WD2010B - This is the HDC chip, similar to the 1010. Does
anyone have the actual datasheet for the 2010?
WD1015
WD11C00
WD16C92
These chips have all appeared on AT controllers at one
time or another. I'm trying to find out if they can be
used for something a little more useful :^}
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--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote:
...long after I wrote...
> > Hey. I've got one of those, just the IR hardware...
>
> Assuming it _is_ from an HP150 machine...
Indeed.
> The original version (fits a 9" CRT) used a 10-pin 2 row connector :
>
> 1 o o 6
> 2 o o 7
> 3 o o 8
> 4 o o 9
> 5 o o 10
That's the connector, but I think it fits a larger monitor than 9", unless
there's lots of space around it for the IR hardware.
Many thanks,
-ethan
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Hi,
Please pardon the bandwidth...I'm looking for a valid email address
for "Ron Ward", possibly something @jps.net. I received email from
him, and he sounded like someone who should be on ClassicCmp...
but his "from" address (n6idlron(a)jps.net) is bad ("unknown user"),
and support at jps.net says "no one in our database with such a
name".
thanks,
Stan Sieler
sieler(a)allegro.com
Is anyone out there familar with the Motorola Power PCs? I spotted
several today. A StarMax 4000/180, several that booted a said Power PC 604
and a Data Server 4000. Can anyone tell me more about these and what kind
OS they run?
Joe
I'm going to be in LA Wed 5/12 til Sun 5/16 for E3. Don't know if I'll
have time or much in the way of transportation, but is there any
interesting places to look for classic computer stuff while I'm there?
Silly me, of course there are, question is will any of you tell me
where your secret fishing holes are? :-)
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
For those who are still curious, but not inclined to cut and paste the
collections of URLs I offered previously...
The images from the final Paxton auction have (finally) coalesced into a
web page, accessible from the 'recent events and appearances' selection on
the Computer Garage home page:
http://www.computergarage.org
-jim
---
jimw(a)computergarage.org
The Computer Garage - http://www.computergarage.org
Computer Garage Fax - (503) 646-0174
>>> Coming soon to www.computergarage.org - the CBBS/NW on-line archives
>>> Coming to VCF III (2-3 October 1999) - CBBS/NW live!
