Search found 1851 matches

by steve3000
Thu Jul 19, 2018 10:56 pm
Forum: software
Topic: MonitorType and RISC OS 3
Replies: 12
Views: 170

Re: MonitorType and RISC OS 3

The above (*configure changing the 'live' screen mode set) is real hardware behaviour, I used it frequently in the past when developing LCDGameModes.
by steve3000
Fri Jul 13, 2018 7:16 pm
Forum: for sale / freebies
Topic: Worth Taking a Look At
Replies: 2656
Views: 218884

Re: Worth Taking a Look At

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 ...
by steve3000
Thu Jul 05, 2018 9:50 pm
Forum: software
Topic: RasterMan v0.16b demo and programmer's module available
Replies: 7
Views: 494

Re: RasterMan v0.16b demo and programmer's module available

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...
by steve3000
Thu Jul 05, 2018 9:34 pm
Forum: software
Topic: RasterMan v0.16b demo and programmer's module available
Replies: 7
Views: 494

Re: RasterMan v0.16b demo and programmer's module available

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...
by steve3000
Thu Jul 05, 2018 9:09 pm
Forum: software
Topic: RasterMan v0.16b demo and programmer's module available
Replies: 7
Views: 494

Re: RasterMan v0.16b demo and programmer's module available

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! ...
by steve3000
Tue Jul 03, 2018 5:13 pm
Forum: hardware
Topic: Help - Philips CM8833 fading in and out
Replies: 2
Views: 157

Re: Help - Philips CM8833 fading in and out

Hey, thanks Mark. I'm planning on taking a look this weekend, will have the soldering iron on standby :)
by steve3000
Tue Jul 03, 2018 5:01 pm
Forum: hardware
Topic: Acorn Archimedes A310 with VIDC monitor recommendations
Replies: 18
Views: 432

Re: Acorn Archimedes A310 with VIDC monitor recommendations

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...
by steve3000
Mon Jul 02, 2018 12:42 am
Forum: hardware
Topic: Partially Working A4000 - Help!!
Replies: 69
Views: 5538

Re: Partially Working A4000 - Help!!

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...
by steve3000
Mon Jul 02, 2018 12:20 am
Forum: hardware
Topic: A5000 intermittent fault
Replies: 22
Views: 1863

Re: A5000 intermittent fault

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...
by steve3000
Sun Jul 01, 2018 4:21 pm
Forum: software
Topic: RasterMan v0.16b demo and programmer's module available
Replies: 7
Views: 494

RasterMan v0.16b demo and programmer's module available

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...
by steve3000
Sun Jul 01, 2018 3:56 pm
Forum: projects
Topic: Twisted Brain Demo
Replies: 30
Views: 1386

Re: Twisted Brain Demo

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...
by steve3000
Fri Jun 29, 2018 10:10 pm
Forum: hardware
Topic: Help - Philips CM8833 fading in and out
Replies: 2
Views: 157

Help - Philips CM8833 fading in and out

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...
by steve3000
Wed Jun 27, 2018 11:13 pm
Forum: software
Topic: Arc hangs when I try to run an application
Replies: 14
Views: 372

Re: Arc hangs when I try to run an application

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?)
by steve3000
Sat Jun 23, 2018 11:35 pm
Forum: upcoming and recent events & exhibitions
Topic: NOVA 18 demoparty: 22nd - 24th June, Budleigh Salterton, Devon
Replies: 26
Views: 808

Re: NOVA 18 demoparty: 22nd - 24th June, Budleigh Salterton, Devon

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! =D> =D>

I must try this on real hardware, hoping it'll run on my master compact...
by steve3000
Mon Jun 18, 2018 10:47 pm
Forum: hardware
Topic: Atomwide A5000 8MB
Replies: 10
Views: 474

Re: Atomwide A5000 8MB

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...
by steve3000
Sun Jun 17, 2018 12:21 pm
Forum: hardware
Topic: Atomwide A5000 8MB
Replies: 10
Views: 474

Re: Atomwide A5000 8MB

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...
by steve3000
Sun Jun 17, 2018 7:22 am
Forum: hardware
Topic: Disc drive led: what drives it?
Replies: 10
Views: 394

Re: Disc drive led: what drives it?

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...
by steve3000
Sat Jun 09, 2018 6:20 pm
Forum: hardware
Topic: Early BBC Micro's (ICL)
Replies: 9
Views: 587

Re: Early BBC Micro's (ICL)

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 ...
by steve3000
Sat Jun 09, 2018 7:39 am
Forum: general
Topic: How far gone must a BBC be to be unfixable?
Replies: 23
Views: 911

Re: How far gone must a BBC be to be unfixable?

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...
by steve3000
Sat Jun 09, 2018 7:28 am
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 44
Views: 1532

Re: IDE interfaces - hardware details

This is brilliant, many thanks for sharing your work Ian!
by steve3000
Sat Jun 09, 2018 7:23 am
Forum: hardware
Topic: Formatting SD/CF cards for use on RISC OS 3.1
Replies: 67
Views: 18289

Re: Formatting SD/CF cards for use on RISC OS 3.1

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...
by steve3000
Sat Jun 09, 2018 7:17 am
Forum: hardware
Topic: Formatting SD/CF cards for use on RISC OS 3.1
Replies: 67
Views: 18289

Re: Formatting SD/CF cards for use on RISC OS 3.1

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 ...
by steve3000
Thu Jun 07, 2018 6:19 pm
Forum: hardware
Topic: Early BBC Micro's (ICL)
Replies: 9
Views: 587

Re: Early BBC Micro's (ICL)

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...
by steve3000
Tue Jun 05, 2018 10:31 pm
Forum: hardware
Topic: US BBC micro restoration - help (and PSU) needed
Replies: 23
Views: 1057

Re: US BBC micro restoration - help needed

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...
by steve3000
Fri Jun 01, 2018 10:49 pm
Forum: for sale / freebies
Topic: Having a clear out
Replies: 52
Views: 1864

Re: Having a clear out

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

Will PM you.
by steve3000
Fri Jun 01, 2018 7:50 am
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4548

Re: https certificates?

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...
by steve3000
Wed May 30, 2018 5:42 pm
Forum: general
Topic: Master spray job
Replies: 9
Views: 295

Re: Master spray job

tn_DSCF3753.JPG
Disc Drive
tn_DSCF3755.JPG
Label gap up close
tn_DSCF3757.JPG
Process
tn_DSCF3763.JPG
Result
by steve3000
Wed May 30, 2018 5:04 pm
Forum: general
Topic: Master spray job
Replies: 9
Views: 295

Re: Master spray job

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...
by steve3000
Wed May 30, 2018 4:48 pm
Forum: programming
Topic: 12-second Mandelbrot rendering on the BBC Master!
Replies: 107
Views: 2910

Re: 12-second Mandelbrot rendering on the BBC Master!

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...
by steve3000
Wed May 30, 2018 10:00 am
Forum: hardware
Topic: US BBC micro restoration - help (and PSU) needed
Replies: 23
Views: 1057

Re: US BBC micro restoration - help needed

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 ...