Search found 96 matches

by markdryan
Sat Feb 15, 2020 3:50 pm
Forum: upcoming and recent events & exhibitions
Topic: Big Ben Club annual club day 16 May 2020 - PHYSICAL MEETING CANCELLED
Replies: 27
Views: 1148

Re: Big Ben Club annual club day 16 May 2020

roland wrote:
Sat Feb 15, 2020 2:57 pm
@Mark: I can bring my SCART TV if that makes travelling easier for you.
That would be perfect. Thanks.
by markdryan
Fri Feb 14, 2020 8:51 pm
Forum: upcoming and recent events & exhibitions
Topic: Big Ben Club annual club day 16 May 2020 - PHYSICAL MEETING CANCELLED
Replies: 27
Views: 1148

Re: Big Ben Club annual club day 16 May 2020

Hi Timo, I'd like to attend as well, if there's still room available. I'll be coming by public transport so I won't be able to bring much. I'm thinking an electron with an AP5 and a laptop running rpcemu. I'll probably bring the omni laptop as well. It doesn't run RiscOS of course, but it is nice an...
by markdryan
Fri Jan 31, 2020 3:09 pm
Forum: off-topic
Topic: Commodore 64 s-video going grey
Replies: 22
Views: 604

Re: Commodore 64 s-video going grey

I took a quick look at The Pictorial C64 Fault Guide. The only related issue seems to be https://derbian.webs.com/c64diag/fault.htm?id=ct1_1 but this seems a little different to the symptons you describe as the reported issue seems to affect the composite signal as well. Might be worth reading throu...
by markdryan
Thu Dec 12, 2019 1:15 pm
Forum: for sale / freebies
Topic: FS: 8-bit IDE podules (A3010/A3020/A4000/A3000)
Replies: 40
Views: 3547

Re: FS: 8-bit IDE podules (A3010/A3020/A4000/A3000)

Hi Ian,

I’ll take one of the 8 bit podules with a Dom for my a3000. If it’s okay with you, I’ll pick it up and pay for it at abug in January.
by markdryan
Sat Nov 30, 2019 6:48 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 24 to 26 January 2020: NOW FULL
Replies: 175
Views: 7978

Re: ABUG SOUTH 24 to 26 January 2020 (Hampshire) BOOKING THREAD

Could you put me down for the whole weekend please? I’ll probably just be bringing a laptop. Thanks
by markdryan
Fri Nov 08, 2019 4:17 pm
Forum: software & utilities for the pc, mac or unix
Topic: Proposal for BBC BASIC 'FOR lists'
Replies: 27
Views: 1287

Re: Proposal for BBC BASIC 'FOR lists'

I've been thinking about this sort of thing a bit lately, mainly with the goal of eliminating bounds checks on arrays.

Would you also support 1d array and string variables? For example,

Code: Select all

FOR I% OF A%()
NEXT

FOR I% OF A$
NEXT
by markdryan
Mon Oct 14, 2019 7:02 pm
Forum: general
Topic: Today I received.....
Replies: 5714
Views: 492902

Re: Today I received.....

I think I'm probably good now for Commodore 8 bit machines (although having said that there's another C128 arriving next week). And here it is. IMG_1430.JPG It's a superb shade of yellow and absolutely filthy inside and out (the picture doesn't really do the filth justice). The plastic clips that h...
by markdryan
Mon Oct 14, 2019 6:52 pm
Forum: hardware
Topic: A3000 crackling (right) speaker
Replies: 20
Views: 1182

Re: A3000 crackling (right) speaker

Thanks for the update. I haven't got around to changing the caps yet (I'm still practicing on Commodores), but my impression is that the screen dimming has improved since I switched memory expansions and replaced the internal 8-bit cf card reader with an external 16-bit one. I do need to spend some ...
by markdryan
Sat Oct 05, 2019 4:58 pm
Forum: general
Topic: Today I received.....
Replies: 5714
Views: 492902

Re: Today I received.....

A C64 breadbin, a C64 breadbin motherboard, and a C128 trickled in over the last few weeks. All sold as untested and all unsurprisingly non-functional on arrival. The C64 booted to a corrupt screen, had no cursor, no sound and two unresponsive keys. I cleaned the case, replaced both CIAs and the SID...
by markdryan
Tue Oct 01, 2019 8:14 pm
Forum: hardware
Topic: A3000 crackling (right) speaker
Replies: 20
Views: 1182

Re: A3000 crackling (right) speaker

Recapping a PSU for an Issue A A3000 is relatively straightforward, and I think well worth the effort, given the heat those ballast capacitors have endured next to heatsinks, not to mention the deleterious effect of decades of non-use on electrolytics. If you like I can post a short list of the ite...
by markdryan
Tue Oct 01, 2019 9:19 am
Forum: hardware
Topic: A3000 crackling (right) speaker
Replies: 20
Views: 1182

Re: A3000 crackling (right) speaker

Has the recapping also solved the screen dimming issue you were having? If so, was that solved by the power supply recap or the motherboard recapping?
by markdryan
Sat Sep 28, 2019 5:50 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 22 to 24 November 2019 - NOW FULL
Replies: 179
Views: 9071

Re: ABUG SOUTH 22 to 24 November 2019 (Hampshire) BOOKING THREAD

Please put me down for half a table for the whole weekend. And thanks so much for the booking code. I was being quoted 170 pounds without it.
by markdryan
Wed Sep 25, 2019 6:00 pm
Forum: hardware
Topic: A3000 PSU capacitors
Replies: 11
Views: 620

Re: A3000 PSU capacitors

IanS wrote:
Wed Sep 25, 2019 5:55 pm
a3k_psu.PNG
"New Unused but old stock"
Ah, so that is what is says. So what does that mean for the capacitors on these things?
by markdryan
Wed Sep 25, 2019 5:51 pm
Forum: hardware
Topic: A3000 PSU capacitors
Replies: 11
Views: 620

Re: A3000 PSU capacitors

markdryan wrote:
Wed Sep 25, 2019 5:47 pm
That's quite tempting. It says new old stock though.
Actually, that's not quite what it says. The description reads "A new unused 22W power supply unit originally designed for the Acorn A3000."
by markdryan
Wed Sep 25, 2019 5:47 pm
Forum: hardware
Topic: A3000 PSU capacitors
Replies: 11
Views: 620

Re: A3000 PSU capacitors

If you're feeling flush there is an alternative to DIY it would appear: https://www.ebay.co.uk/itm/New-Acorn-A3000-22W-Power-Supply-Unit-PSU-outputs-5V-/171429216454 That's quite tempting. It says new old stock though. So presumably the capcitors in these power supplies are almost as old as the cap...
by markdryan
Mon Sep 23, 2019 7:44 pm
Forum: hardware
Topic: A3000 crackling (right) speaker
Replies: 20
Views: 1182

Re: A3000 crackling (right) speaker

> I've also noticed the screen dipping in brightness intermittently, which seems to be related. That's interesting. Mine's been doing this for a few months now, although I hear no crackling from the speaker. I'd also be very interested to hear whether the re-capping solves this problem. All I've don...
by markdryan
Mon Sep 23, 2019 2:02 pm
Forum: past events & exhibitions
Topic: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019.
Replies: 249
Views: 13124

Re: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019.

I also had fish and chips but I definitely paid. I’ve just checked my bank account and the transaction is there.
by markdryan
Fri Sep 06, 2019 3:03 pm
Forum: wanted
Topic: Wanted: Atom key posts / ] key
Replies: 30
Views: 1515

Re: Wanted: Atom key posts / ] key

> I can spare another 7 - same arrangement as for the others.

Would you happen to have one more spare? The post is broken on the 5 key of my Issue 4 atom.
by markdryan
Sun Jul 07, 2019 8:19 pm
Forum: past events & exhibitions
Topic: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019.
Replies: 249
Views: 13124

Re: Acorn World and ABUG meetup, Cambridge 20-22nd September 2019

Could you put me down for a half table for all three days?
by markdryan
Mon Jul 01, 2019 7:29 pm
Forum: past events & exhibitions
Topic: ABUG Cambridge 28th - 30th June 2019 BOOKING THREAD - Now FULL
Replies: 244
Views: 14784

Re: ABUG Cambridge 28th - 30th June 2019 BOOKING THREAD - Now FULL

Another great ABUG! I had a fantastic time, which I divided between chatting, snacking, working on my project and Alien Syndrome, in equal measure. A big thanks to the Museum and the organisers of the event.
by markdryan
Sun Jun 09, 2019 4:00 pm
Forum: past events & exhibitions
Topic: Dutch Techsat 2019
Replies: 37
Views: 3349

Re: Dutch Techsat 2019

I'd just like to express my thanks to Wim and Kees for organising the event (and for fixing my Atom). I had a great time and it was really nice to meet everyone in person. I was planning to do a bit of coding but instead spent the day chatting, drinking coffee, eating biscuits and playing with Atoms...
by markdryan
Thu May 16, 2019 1:29 pm
Forum: off-topic
Topic: Making the most of the sun
Replies: 15
Views: 827

Re: Making the most of the sun

chinnyhill10 wrote:
Thu May 16, 2019 1:04 pm
There are people currently experimenting without peroxide just using sunlight. The process is slower but they are getting results.
You can see some of those results further up the thread. viewtopic.php?f=11&t=17131#p237217
by markdryan
Wed May 15, 2019 1:38 pm
Forum: off-topic
Topic: Making the most of the sun
Replies: 15
Views: 827

Re: Making the most of the sun

I've been trying to Lightbright (just leave it in the sunshine without chemicals) my riscpc keyboard in the Dutch sun over the last couple of days. There does seem to be a slight improvement.
lightbright.jpg
Edit: I should add that the image on the left is the lightbrighted keyboard.
by markdryan
Sun May 12, 2019 7:27 am
Forum: past events & exhibitions
Topic: RISC OS eXperience may 2019 ( The Netherlands)
Replies: 18
Views: 1240

Re: RISC OS eXperience may 2019 ( The Netherlands)

So nice to have you on the day. And it was a great addition to all the machines there ( BBC, Master, Archimedes and A5000 ). Hope to see you next year. Thanks so much for the invite and the lend of the monitor. It was great to meet everyone and to see so many Archimedes in one place. I also had lot...
by markdryan
Sat May 11, 2019 2:01 pm
Forum: past events & exhibitions
Topic: RISC OS eXperience may 2019 ( The Netherlands)
Replies: 18
Views: 1240

Re: RISC OS eXperience may 2019 ( The Netherlands)

Oddly enough the ARM native mode doesn't seem much faster than the 269Mhz 6502 processor when running BASIC programs. Maybe this is because the programs I tried were doing a lot of floating point calculations. The bottleneck seems to have been the large amounts of graphics commands, GCOL and PLOT 6...
by markdryan
Fri May 10, 2019 9:26 pm
Forum: past events & exhibitions
Topic: RISC OS eXperience may 2019 ( The Netherlands)
Replies: 18
Views: 1240

Re: RISC OS eXperience may 2019 ( The Netherlands)

I'd also like to get them running on the ARM native processor but am currently struggling to get BASIC working on this. Hopefully, I'll be able to fix this tonight. And it's fixed. I just needed to update my version of PiTubeDirect. Oddly enough the ARM native mode doesn't seem much faster than the...
by markdryan
Fri May 10, 2019 9:22 am
Forum: past events & exhibitions
Topic: RISC OS eXperience may 2019 ( The Netherlands)
Replies: 18
Views: 1240

Re: RISC OS eXperience may 2019 ( The Netherlands)

roland wrote:
Fri May 10, 2019 9:11 am
If you want to bring your Electron to the TechSat I can also arrange a monitor or TV with scart for you. You have some nice goodies to show (besides the MGC that I already have).
Good idea. I'll bring it along.
by markdryan
Fri May 10, 2019 8:08 am
Forum: past events & exhibitions
Topic: RISC OS eXperience may 2019 ( The Netherlands)
Replies: 18
Views: 1240

Re: RISC OS eXperience may 2019 ( The Netherlands)

I have prepared a nice Sony CRT for you ;-) Brilliant. I've prepared a few nice demos (mandelbrot and mexican hat), which I can show running on the standard electron, in turbo mode, on a 3Mhz 6502 second processor and on a 250Mhz 6502 second processor. I'd also like to get them running on the ARM n...
by markdryan
Wed May 08, 2019 1:08 pm
Forum: past events & exhibitions
Topic: RISC OS eXperience may 2019 ( The Netherlands)
Replies: 18
Views: 1240

Re: RISC OS eXperience may 2019 ( The Netherlands)

I presume it is composite video I can bring a nice Philips Mono chrome CRT with me. Fantastic. I have an RGB to scart cable for the electron. However, I also have small upscaler I can bring that can be used to connect the electron to a HDMI display. So something with HDMI or scart input should be f...
by markdryan
Tue May 07, 2019 5:55 pm
Forum: past events & exhibitions
Topic: RISC OS eXperience may 2019 ( The Netherlands)
Replies: 18
Views: 1240

Re: RISC OS eXperience may 2019 ( The Netherlands)

I'll be travelling by public transport so won't be able to bring any of my RISC OS machines, which are all a little large. I do have a rather nice electron that I could bring. However, I won't be able to bring a display, so this would only be worthwhile if there was a monitor available.