Search found 1691 matches

by steve3000
Fri Mar 15, 2013 7:17 pm
Forum: hardware
Topic: Thanks a packet!
Replies: 20
Views: 2598

Re: Thanks a packet!

Hey now that's a great little find and looks like you've made some good progress too! Thanks for sharing - I might just have to order one :-)

Steve
by steve3000
Sat Mar 09, 2013 4:15 pm
Forum: off-topic
Topic: Since when..
Replies: 3
Views: 449

Re: Since when..

danielj wrote:Did Farnell stop having minimum orders/charging for shipping?!

d.

Good spot - just saw the same thing myself... I'd been building up a list of bits to order, but seems I didn't need to :D
by steve3000
Sat Mar 09, 2013 4:11 pm
Forum: wanted
Topic: Someone to do some SMT rework...
Replies: 14
Views: 789

Re: Someone to do some SMT rework...

RobC wrote:Thanks to Dave, my A540 is now happily running at 40MHz. =D>


Nice one Rob!

I'm really interested to know - other than the Arm3, did you just swap the oscillator over? Do you have a picture?

I'd like to look into the same swap myself at some point in the future...

Steve
by steve3000
Sat Mar 09, 2013 9:19 am
Forum: hardware
Topic: A4 not starting up - blinking floppy light...
Replies: 8
Views: 556

A4 not starting up - blinking floppy light...

Wonder if anyone can give some suggestions on things to try with a faulty A4... I picked up a semi-functioning A4 laptop this week - it had been working recently, on an external monitor and keyboard (the internal screen needed a new cable which I'd be planning to fit...). However, before I'd even ha...
by steve3000
Mon Mar 04, 2013 10:30 am
Forum: hardware
Topic: A7000+ Questions
Replies: 4
Views: 488

Re: A7000+ Questions

davidb has suggested I check the CMOS battery (thanks), is there a dummy's guide for opening it up? I can see the two 'fix' type screws on the rear panel, do I need to remove the screws that hold the VGA, RS232 & Printer cables in? Definitely a good idea to check the battery - a leaky battery c...
by steve3000
Sat Mar 02, 2013 8:26 pm
Forum: hardware
Topic: A540 PSU silent fan replacement
Replies: 1
Views: 474

Re: A540 PSU silent fan replacement

Here is the swap in pictures: tn_A540 PSU 026.jpg tn_A540 PSU 031.jpg tn_A540 PSU 039.jpg tn_A540 PSU 041.jpg tn_A540 PSU 043.jpg tn_A540 PSU 058.jpg tn_A540 PSU 061.jpg tn_A540 PSU 062.jpg tn_A540 PSU 063.jpg tn_A540 PSU 070.jpg The A540 is now totally silent - a definite success! :-) Steve
by steve3000
Sat Mar 02, 2013 8:17 pm
Forum: hardware
Topic: A540 PSU silent fan replacement
Replies: 1
Views: 474

A540 PSU silent fan replacement

The A540 PSU has two 80 mm x 25 mm fans fitted and these are very loud when running. Clearly cooling is required - the A540 originally came with a SCSI podule, a double height 100Mb SCSI drive, an Arm3 and up to 16Mb ram. With the lid off, it doesn't take a fancy thermometer to detect the hottest pa...
by steve3000
Sat Mar 02, 2013 7:39 pm
Forum: hardware
Topic: MODE 23 - hi-res mono - 1152 x 896
Replies: 8
Views: 850

Re: MODE 23 - hi-res mono - 1152 x 896

Make your mind up. The mouse: [-X chill out, you know what Tom's talking about, we know what Tom's talking about - and as Tom rightly points out, whether correct or incorrect, 'cursor' is the term used in the ARM VIDC data sheets and RISC technical data manual to describe the hardware sprite. The c...
by steve3000
Sat Mar 02, 2013 6:48 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

Reason why there was a non-spinning fan in the A540's PSU shown in picture below: tn_A540 PSU 033.jpg Poor quality control at the PSU manufacturer I suspect. I did push it back in to check, and it spins up nicely. Then I moved on to replace both fans with modern silent 1100 rpm fans. I'll post that ...
by steve3000
Thu Feb 28, 2013 6:31 pm
Forum: hardware
Topic: MODE 23 - hi-res mono - 1152 x 896
Replies: 8
Views: 850

Re: MODE 23 - hi-res mono - 1152 x 896

Is there any chance you could post a close-up of the mouse cursor? Arculator emulates mode 23, but I was never entirely sure I was getting the cursor right. Hi Tom, I'll try to get a picture of the pointer at the weekend. However, I can confirm the default RiscOS 3 pointer and hourglass look awful ...
by steve3000
Wed Feb 27, 2013 10:45 pm
Forum: hardware
Topic: MODE 23 - hi-res mono - 1152 x 896
Replies: 8
Views: 850

MODE 23 - hi-res mono - 1152 x 896

Ok, a monochrome RiscOS desktop is maybe not everyone's cup of tea, but I was fascinated by the high resolution output of Mode 23 when I first saw an A540 driving a 19" high res mono monitor at an Acorn User show back in October 1991 (or thereabouts). 21 years later, and I've owned an A540 for ...
by steve3000
Wed Feb 27, 2013 12:50 am
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

RISC OS 8192K The +4Mb card is working!!! Finally traced the problem down to a hairline fracture in a track on the back of the board (second to left of the 8 vertical tracks running up from the connector, below the letter 'FR-'): A540 PSU 004.jpg Solved with a short length of patch cable: A540 PSU 0...
by steve3000
Wed Feb 27, 2013 12:31 am
Forum: hardware
Topic: Resurrecting an A5000
Replies: 42
Views: 2678

Re: Resurrecting an A5000

That is a good sign - if the keyboard lights are coming on, the ARM has started. If you can turn them on and off by pressing the Caps/Num or Scroll lock keys, then RiscOS is running and a fully function computer is within reach. If the A4000 is having problems, try Delete-Power on, keep delete held ...
by steve3000
Sun Feb 24, 2013 2:59 pm
Forum: community projects
Topic: How many sold? German tank problem:serial nums wtd
Replies: 284
Views: 39096

Re: How many sold? German tank problem:serial nums wtd

A couple more serials:

Archimedes A410/1 (Iss 3, 1991)
Serial no.: 01-AKB40-1001151

Archimedes A420/1 (Iss 3, 1989)
Serial no.: 25-AKB46-1000594

Acorn A7000 (currently dead :( )
80-AMC03-1012512

Steve
by steve3000
Sat Feb 23, 2013 10:27 am
Forum: hardware
Topic: Resurrecting an A5000
Replies: 42
Views: 2678

Re: Resurrecting an A5000

Do any of the keyboard lights come on (on either machine)?

If they do, this is a good sign - it means the ARM processor has started up, which is a good step towards getting the computer up and running.

No keyboard lights means either the keyboard is dead, or the processor hasn't started.

Steve
by steve3000
Thu Feb 21, 2013 2:39 pm
Forum: stardot.org.uk
Topic: Why can't I send private messages?
Replies: 9
Views: 1461

Re: Why can't I send private messages?

Thanks! But I've just realised that it might be 25 posts :D
by steve3000
Thu Feb 21, 2013 2:30 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

Thanks. I'll try sending an email - think I have a contact address from when I registered :)
by steve3000
Thu Feb 21, 2013 2:29 pm
Forum: stardot.org.uk
Topic: Why can't I send private messages?
Replies: 9
Views: 1461

Re: Why can't I send private messages?

Ok, thanks, I would send them a PM but... :cry:
by steve3000
Thu Feb 21, 2013 2:27 pm
Forum: wanted
Topic: Long shot - Wanted: 4Mb card for A540 ?
Replies: 0
Views: 215

Long shot - Wanted: 4Mb card for A540 ?

A long shot I'm sure, but if anyone has a spare 4Mb card for an A540, and is thinking of selling it, please drop me a line.

Steve
by steve3000
Thu Feb 21, 2013 2:22 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

...Even so, I must be close to the number required...
by steve3000
Thu Feb 21, 2013 2:22 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

Not sure why - is there a minimum number of posts required before I can use PMs?
by steve3000
Thu Feb 21, 2013 2:21 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

Thanks Dave - I can't actually reply to your PM though...
by steve3000
Thu Feb 21, 2013 2:20 pm
Forum: stardot.org.uk
Topic: Why can't I send private messages?
Replies: 9
Views: 1461

Re: Why can't I send private messages?

Yikes, I have the same problem. I thought I'd had a fair few posts, but no access to reply to messages... Anyone know what the magic number of required posts is?

Steve
by steve3000
Wed Feb 20, 2013 11:38 pm
Forum: hardware
Topic: What would be the A5000 Alpha top ROM upgrade?
Replies: 3
Views: 394

Re: What would be the A5000 Alpha top ROM upgrade?

Actually RiscOS 3.19 will work if you can get it - it is the German version of RiscOS 3.11. Other than the German conversion, there a few newer versions of various modules present (CLib, FPE, I think?), but nothing ground breaking - and nothing which wouldn't immediately be replaced with newer versi...
by steve3000
Tue Feb 19, 2013 6:45 pm
Forum: hardware
Topic: Dead A440
Replies: 17
Views: 1021

Re: Dead A440

Glad to hear your a440 is running again. It's a good feeling to resurrect an old piece of technology! And it's nice to see a Watford enhancer again - been a while since I saw one of those, and Paul's right - it can take two crystals - the one I once had looked very similar but also had a 25.175MHz c...
by steve3000
Sun Feb 17, 2013 12:29 pm
Forum: community projects
Topic: How many sold? German tank problem:serial nums wtd
Replies: 284
Views: 39096

Re: How many sold? German tank problem:serial nums wtd

This is a great idea! Here are mine, the issue numbers are taken directly from the motherboards: BBC B (Issue 4, AB Electronic Systems) Serial no.: 183724 Archimedes A310 (Iss. 1+) Serial no.: 27-AKB15-1022931 Archimedes A540 (Issue 2) 01-AKB50-0001501 Acorn A4000 (Issue 1) 01-AGC20-1010505 I have a...
by steve3000
Sat Feb 16, 2013 8:42 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

I may still have some filter material left. If I find it tomorrow, it's yours. Bought the material based on its thickness! Yup, both fans still working :D Dave H :D Thank you Dave! Please do drop me a line if you find some. :) I'm thinking that if I do need to replace that fan, I might just go all ...
by steve3000
Sat Feb 16, 2013 8:07 pm
Forum: software: other
Topic: Imaging ADFS 'L' floppies
Replies: 25
Views: 1411

Re: Imaging ADFS 'L' floppies

I assume these are 5.25" discs? I have a lot of my old Arc software and programmes on 5.25" ADFS discs (both L and D format) so am facing a similar issue. When I moved from the BBC to my first Arc in the 90's, I bought a Beebug 5.25" drive adapter/buffer to allow me to plug in the 5.2...
by steve3000
Sat Feb 16, 2013 7:36 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

Dumb question. Which socket are you using for the RAM. It should be the one closest to the processor moving away for every 4Mb. Paul Yes - good point, but I have tried them all (well you would, wouldn't you ;) ) interestingly the start up actually gets further when plugged into the two furthest awa...
by steve3000
Sat Feb 16, 2013 7:32 pm
Forum: hardware
Topic: Restoring A540
Replies: 23
Views: 1634

Re: Restoring A540

4) Fan filter has disintegrated - need to find something appropriate as a replacement. Steve, I had the same problem . . . See my 'cure' here: http://stardot.org.uk/forums/viewtopic.php?f=9&t=5413&hilit=a540 That should take that issue off your list :D Dave H :D Hi Dave, That's a brilliant ...

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