stardot.org.uk

Why not ask the vendor for the part number? I have an identical looking disc which came with my Brother's Archimedes A310 (I think he got it for Christmas in 1987). The part number on it is 0277,020. Well... I did. They're 0277,020 and 0276,020. The seller also agreed to ship to me in the US. So I ...

Nice work! It's another thing to add to my list of "things I need to fix ArcEm to work with". Thanks Jeffrey! I'd love to see this working under emulation one day :) Let me know if you get round to tweaking ArcEm and need any specific test cases. The Symposium '96 intro also does "interesting" thin...

With a few minor tweaks such as branching to the IRQ/FIQ code in the Module, instead of copying it into the FIQ area, I think it might run on a Pi under ADFFS - I've not figured a way to handle code in Page Zero yet. Admittedly there's no reason to run RasterMan on a Pi, other than the technical ch...

I've just tried this on my A3000. It's very impressive to watch!! Amazing to see this machine display palettes like this on screen for the first time (as far as I know!). I look forward to trying (and failing) to understand some of the source code when you release it. Hey thanks, glad you like it! ...

Hey, thanks Mark. I'm planning on taking a look this weekend, will have the soldering iron on standby

Yes, just behind the RGB socket, Paulv's website shows how his modern VIDC fits in an A310, here: https://www.retro-kit.co.uk/Ultra-VIDC-Enhancer/ Enhancers from back in the day plug in the same location, but look older ;) But even without an enhancer you can usual get some sort of picture, providin...

Yikes, sorry to hear about your A4000 PSU. Glad the main PCB is ok though. I don't recall seeing the schematic for the A4000 PSU in the TRM (the A3010/A3020 on-PCB PSUs are shown, but not sure these would be useful) although it's been a while since I looked so could be wrong. I never got round to fu...

Well there's a blast from the past! Not much to report I'm afraid. I ordered the replacement CMOS RAM chip, but it took a few weeks to arrive, then my wife gave birth and this computer got rapidly packed away into the loft. I later picked up a fully functional A5000 from a friend so had no urgent ne...

Just a quick note that my 'RasterMan' v0.16b technical demo and RISC OS programmer's interface (Raster Manager Module) for the Archimedes are available to download at the link below, and to view on YouTube. Some of you many recall the technical demo was first shown at the Wakefield Acorn show in May...

This is great - enjoyed the demo and equally enjoying reading your write up so far, can't wait for the rest :D ! Some really great techniques there and I love the dithering approach - which looks amazing on my slightly blurry CRT. The use of vertical rupture combined with ordered dithering is awesom...

My trusty Philips CM8833 has developed an intermittent fault - the picture, which is pretty much perfect, randomly fades to black after using for a while (usually between about 20 minutes and an hour's use). When the screen fades out, if I peak through the back grill of the monitor, I can see the or...

Another possibility, I wonder if you have one of ye olde RISC OS viruses, as these would affect disc based programmes and not ROM apps, and I recall often lead to crashes once they'd overwritten themselves a few times.

Do you have VProtect module loaded at boot (assuming you have a hard disc?)

Well done, that is awesome! Just watched via emulation so far and I couldn't believe the colours, my first thought was this must be using a VideoNuLA... Amazing!

I must try this on real hardware, hoping it'll run on my master compact...

As above, the upgrade needed the original A5000 pcb to be modified. I once owned an original A5000 that had been modified to take a simtech 4-8mb upgrade, the pcb modifications were probably similar to what the Atomwide board needs: the obvious socket fitted for the MEMC, then the two large axial ca...

I have one identical to that in my A5000 :) It's provides an additional 2mb to the A5000, bringing it up to 4mb, the extra tracking would provide a further 4mb and dual MEMC sockets - and would plug into the MEMC socket on the A5000's pcb. From my own investigations a few years back, I was confident...

Well done on identifying IC42, I've had to replace this on a battery damaged A5000 in the past too. Other two ICs I've had problems with are the buffers for the IDE HDD data lines, so keep an eye on these if you HDD doesn't function in future. For the HDD LED, there's a track which runs across the w...

Here's my issue 2 model A, Cleartone manufactured, serial 100403 and all chips socketted which is very nice :) It's in great condition, so I don't want to modify (other than easily reversible) but it is rather limited without any ports...! I'm currently working up a reliable and reversible fitment ...

All depends on time/effort you are willing to put into repairs and if you are treating it as a hobby/learning exercise. With Commodore people, it seems to be when the board tracks have utterly perished. That's probably my personal limit as well. I'm game for repairing a small number of traces, but i...

This is brilliant, many thanks for sharing your work Ian!

Also I suspect this thread will be very useful to others who are wanting to backup old HDDs onto SD cards, but it has strayed off topic from the original title "Formatting SD/CF cards for use on RISC OS 3.1" - so I wonder if one of the forum mods could maybe move the backing up HDD topics into a thr...

Well done, what an excellent result to have safely backed up your HDD! =D> I tried running every single application from my hard drive on my Pi and only one program ran, and then crashed :( Pi is definitely not a solution for running programs, at least in my case. Almost everything complained about ...

Here's my issue 2 model A, Cleartone manufactured, serial 100403 and all chips socketted which is very nice :) It's in great condition, so I don't want to modify (other than easily reversible) but it is rather limited without any ports...! I'm currently working up a reliable and reversible fitment o...

I'm assuming the circuit itself is pretty similar, if not identical, given that it runs normal Beeb software...(at least I'm hoping it will, when it is working!?). I know for a fact the ROMSEL circuitry is different to a regular beeb as I found when repairing my German Beeb (same as a US Beeb). I w...

Oh, I'd be interested in the C64 if still available?

Will PM you.

Interesting, just noticed the green padlock myself. Most pages seem to have it, but a few such as Page 154 of "Today I recieved" don't have the padlock, although page 153 does...

I picked up a couple of empty Master 128 cases last year. Both are very yellowed. One of them has obviously had something with a straight edge put on top such that half the case is yellow and the other cream. I suspect that such a two-tone case will not respond well to RetroBrite treatment, even mu...

I've just tried the latest version and it is truly amazing work! I remember waiting with eager anticipation for 20+ minutes for one of these to draw back in the day. One recommendation - can you clear the keyboard buffer at the end of a frame? The current version (well the one at the top of the thre...

Also, does anyone know of any fault-finding information for the US Beeb? The PCB layout is completely different, along with the IC numbering and link numbers, and very few chips are socketed - similar to issue 7 beebs. So if there's a list somewhere of US Beeb IC numbers or link numbers, that would ...

Might it have had its ULA swapped at some time? Does it even have/need the invention mod? Good question. Fitted a ULA to get it running. No idea if it has or needs the mod - pcb is a different layout which might make it difficult to tell, and dates from 1983, if that helps? What do I need to look f...