Search found 2859 matches

by roland
Thu Jul 19, 2018 6:54 pm
Forum: acorn atom
Topic: Acorn Atom on Eurocard
Replies: 7
Views: 243

Re: Acorn Atom on Eurocard

Bram, You should definitively visit an ABUG meeting where you can see a rack Atom :) . Furthermore I have a board and an AVR for connecting a ps/2 keyboard to the 7447 and 8255. And as soons as my holidays start I will investigate an alternative for the godil. You may also benefit from that.... Gree...
by roland
Tue Jul 17, 2018 7:27 am
Forum: introduce yourself
Topic: Atom Owner from Smalltown, Canada
Replies: 20
Views: 238

Re: Atom Owner from Smalltown, Canada

Hello Peter,

Welcome to this forum. Enjoy your visits here and find out what a great machine this little computer can be.

Greetings from the south of the Netherlands,
Roland
by roland
Tue Jul 10, 2018 9:48 pm
Forum: acorn atom
Topic: Acorn Atom and AtoMMC
Replies: 3
Views: 142

Re: Acorn Atom and AtoMMC

As far as I know the via is not required for an AtoMMC. But I wonder if that bbc card works well without a 6522 :-k Anyway RTB if you want to use that card, there is an improved version of the original MOS ROM at http://acornatom.nl/atomarch/acl2-12/mosrom. (You might have to skip the first 16 bytes...
by roland
Wed Jun 20, 2018 9:56 pm
Forum: software: new games
Topic: Atomic AGD
Replies: 60
Views: 3404

Re: Atomic AGD

Great work!
by roland
Thu Jun 14, 2018 8:37 pm
Forum: software: other
Topic: Using BBC BASIC on a Homebrew Computer
Replies: 9
Views: 540

Re: Using BBC BASIC on a Homebrew Computer

You can start by modifying the Atom BBC MOS rom as this contains most functions (api calls)!for running BBC Basic. I was looking for the source but I could not find it. With a decent mod rom you can run BBC Bacis with no modifications at all.

That is the way Acorn implemented BBC Bacic on the Atom.
by roland
Wed Jun 13, 2018 12:48 pm
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Re: Atom 2k18 ?

If you are going to source parts like this, it may well be worth letting your 'customers' know that they are recycled parts, just incase there are any problems with them. I will test them before shipping, as I program them in an already build Atom. So I'm sure that they are working when they leave ...
by roland
Wed Jun 13, 2018 12:16 pm
Forum: stardot.org.uk
Topic: Has Stardot been purged from Google search?
Replies: 14
Views: 340

Re: Has Stardot been purged from Google search?

I think they are already indexing again: https://www.google.com/search?q=atom+2k18
by roland
Wed Jun 13, 2018 12:09 pm
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Re: Atom 2k18 ?

Thanks for your feedback. I'm seriously considering this option. After all, the Atom is not a really life-saving or life-supporting device. Although I'd probably die without it :lol:
by roland
Tue Jun 12, 2018 10:00 pm
Forum: acorn atom
Topic: What is a good PSU for a 5V modded Atom?
Replies: 4
Views: 131

Re: What is a good PSU for a 5V modded Atom?

I also use (and advice) a 5V 2A usb adapter, bought in a local store.
by roland
Tue Jun 12, 2018 9:27 pm
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Re: Atom 2k18 ?

Today I have played a bit with KiCad to make an adapter for the CPLD's but whatever I try, it's always too big. I really dislike the surface mounted devices because it's difficult to solder them and also difficult for me to program them for other people who will build an Atom but do not have access ...
by roland
Mon Jun 11, 2018 7:10 am
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Re: Atom 2k18 ?

hoglet wrote:
Mon Jun 11, 2018 5:31 am
Have you decided which board to use?
Not yet, the XC6SLX9-board is cheaper and can route the audio and video signals over the PCB which makes it a bit easier. I also have to look at the physical space that both devices need and how they fit on the PCB.
by roland
Sun Jun 10, 2018 7:31 pm
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Re: Atom 2k18 ?

There are lots of these available, e.g. https://www.ebay.co.uk/itm/Xilinx-FPGA-Spartan-6-XC6SLX9-Core-Board/111640406811 (This is the board the Duncan referred to in the post above, that we are now using with ICE-T65) Can the video and audio signals that are now routed with a separate cable from th...
by roland
Sun Jun 10, 2018 7:24 pm
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Re: Atom 2k18 ?

There are some adapters available, however IMHO they are quite expensive and you still have to solder them. The advantage of such an adapter is that you can easily swap the CPLD's: http://www.epboard.com/eproducts/parts/EPL-0044.htm The FPGA does much more than only the video, it has also SID audio,...
by roland
Tue Jun 05, 2018 2:22 pm
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Re: Atom 2k18 ?

Are you thinking then that this would be incremental changes to the current design? I was wondering if it would be worth going for a 3.3V only design. I prefer an incremental change to the current design, however I'm not unwilling to use the XC6SLX9 Core Board if we can use that. It's only about ha...
by roland
Tue Jun 05, 2018 11:08 am
Forum: acorn atom
Topic: Atom 2k18 ?
Replies: 19
Views: 681

Atom 2k18 ?

Since I still receive request for an updated Atom 2k15 board I'm starting to think about an updated design. With the current we have some issue, regarding to components: The XC95xxXL in PLCC44 package are not available any more The used Godil is also discontinued There's a small mistake in the seria...
by roland
Mon Jun 04, 2018 10:05 pm
Forum: upcoming and recent events & exhibitions
Topic: Dutch Atomic Techsat on Saturday June 2nd
Replies: 23
Views: 1353

Re: Dutch Atomic Techsat on Saturday June 2nd

I had a very goood time as well. Thank you Kees for organizing this meeting again. And yes, I'm thinking about an update of the atom board. Atom 2k18 sounds good, doesn't it? Maybe our next Christmas present [-o<

I'll start a new topic soon....
by roland
Sat Jun 02, 2018 9:52 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD
Replies: 125
Views: 7337

Re: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD

Robert, can you pm me your FaceTime contact data? We’re ready to connect.
by roland
Sat Jun 02, 2018 5:13 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD
Replies: 125
Views: 7337

Re: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD

Have fun guys! Looking forward to see you today by a video connection.
by roland
Fri Jun 01, 2018 10:04 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4535

Re: https certificates?

I was at the monthly Atom User Group meeting this evening, so I didn't notice your post earlier. But the certificate looks fine to me, I don't think there's any improvement possible. Other actions could involve implementing automatic redirection from http to https and implementing HTST. But imho thi...
by roland
Fri Jun 01, 2018 2:58 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD
Replies: 125
Views: 7337

Re: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD

lazarusr wrote:
Fri Jun 01, 2018 10:08 am
Roland - what system do you want to use for the video link? I prefer FaceTime if you have a Mac your end. Otherwise I can try to set up Skype, but it isn't something I have used before.
I'll bring a MacBook, so we can use FaceTime.
by roland
Fri Jun 01, 2018 2:54 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4535

Re: https certificates?

'your connection to this site is not secure' Does it also tell you why? I have no problems on my computer (FF and Chrome), nor on my iPad. However, a quick check on https://www.xolphin.com/sslcheck/stardot.org.uk says: The certificate could be verified and is installed properly. The root and interm...
by roland
Thu May 31, 2018 10:32 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD
Replies: 125
Views: 7337

Re: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD

Robert,

Are you bringing a laptop with beamer for a video connection to the TechSat meeting in Wijbosch - NL?
by roland
Sat May 26, 2018 9:52 pm
Forum: stardot.org.uk
Topic: https certificates?
Replies: 86
Views: 4535

Re: https certificates?

Seems to work fine on my iPad =D>
by roland
Fri May 25, 2018 9:16 pm
Forum: off-topic
Topic: Forum GDPR compliance?
Replies: 58
Views: 898

Re: Forum GDPR compliance?

Two other gdpr things: - SSL is required - data portability: please send me all my posts so that I can move my account to forum.acornatom.nl :lol: I tried to make use of my right to be forgotten at our national "belastingdienst" (tax authorities) but my request was denied :cry: Thank you Daniel for ...
by roland
Sun May 06, 2018 8:07 am
Forum: acorn atom
Topic: New Atom owner - trying to determine mods
Replies: 10
Views: 552

Re: New Atom owner - trying to determine mods

The display looks great =D>
If you zoom into the picture it looks like the vga connector is plugged into the wall :lol:
by roland
Sun Apr 29, 2018 9:31 pm
Forum: upcoming and recent events & exhibitions
Topic: Dutch Atomic Techsat on Saturday June 2nd
Replies: 23
Views: 1353

Re: Dutch Atomic Techsat on Saturday June 2nd

Looking forward to meet you Neil. Just bring something you're working on. Or just a good mood :lol:
by roland
Sun Apr 22, 2018 8:35 pm
Forum: general
Topic: Electron Forever E-Magazine Issue 1
Replies: 16
Views: 570

Re: Electron Forever E-Magazine Issue 1

That magazine looks very profesional. I hope that the Electron community provides a lot of input for it. Well done =D>
by roland
Wed Apr 18, 2018 9:17 pm
Forum: acorn atom
Topic: Atom 16 bit RISC
Replies: 6
Views: 440

Re: Atom 16 bit RISC

I didn't know you were working of this. Looking forward to see it on a techsat.

Btw, shouldn't it be COLOUR 3 :lol:
by roland
Thu Apr 12, 2018 10:49 am
Forum: acorn atom
Topic: Quantum Atom Challenge
Replies: 6
Views: 479

Re: Quantum Atom Challenge

Just a speculation, without any investigation of the datasheets: can it be caused by #B002 changing during the execution of the ADC #B002 instruction?
by roland
Wed Apr 11, 2018 9:00 pm
Forum: acorn atom
Topic: Quantum Atom Challenge
Replies: 6
Views: 479

Re: Quantum Atom Challenge

The first thing that pops into my mind is a glitch in the cpu or hardware. Perhaps a memory read error (bpl opcode 0x10 instead of bpl opcode 0x30 which has only one diiferent bit). I didn't run the routine yet, but is there any difference on what type of real Atom you run this? Original, Atom2k15, ...