Search found 153 matches

by -B-
Tue May 28, 2019 3:03 pm
Forum: acorn atom and acorn system series
Topic: YARRB [SOLD OUT]
Replies: 287
Views: 30509

Re: YARRB

hoglet wrote:
Tue May 28, 2019 1:34 pm
Or you could program the version in this zip file:
yarrb72v14.zip
That will be the easier option. Thanks Dave.
by -B-
Mon May 27, 2019 12:48 pm
Forum: acorn atom and acorn system series
Topic: Acorn Atom power connections on motherboard.
Replies: 45
Views: 3708

Re: Acorn Atom power connections on motherboard.

Garbage on screen at startup is normal. You can increase the value of the reset capacitor C11 to stop it.

How are you connecting the video? RF?
There is a composite video output on pin 9 of PL4 and pin 10 is GND.

Neil.
by -B-
Mon May 27, 2019 9:20 am
Forum: acorn atom and acorn system series
Topic: YARRB [SOLD OUT]
Replies: 287
Views: 30509

Re: YARRB

This has to be done in the VHDL source file and the a new jedec file has to be generated for programming into the CPLD. I quite like it the way it is. Just having an understanding of it makes it less complicated to me. A standard Atom has only one socket for an expansion rom at #A000 (IC24). When I...
by -B-
Sun May 26, 2019 9:03 pm
Forum: acorn atom and acorn system series
Topic: YARRB [SOLD OUT]
Replies: 287
Views: 30509

Re: YARRB

Ok, after reading the RAMROM bits document, it’s a little clearer to me how this works.

Now, how do I change the startup value of BFFE and what do the bits of BFFF relate to?

Excuse my ignorance.

Neil.

PS: BFFE=6 does invoke AtoMMC and fill the RAM hole.
by -B-
Sat May 25, 2019 11:00 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

roland wrote:
Sat May 25, 2019 10:49 pm
I hope you take this Atom with you to the TechSat in June.
I will be, I still have lots of questions and a new issue has surfaced today but I will do some testing before I throw a question to the forum.

Neil.
by -B-
Sat May 25, 2019 5:11 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

hoglet wrote:
Sat May 25, 2019 4:50 pm
I'd love one of these.... Would you be willing to post a PDF?
No problem. PDF, Word file, Avantgarde TTF and Acorn Atom Colour logo files....

Video to HDMI Adapter sticker.zip
(1.16 MiB) Downloaded 51 times

Thanks to Steve Smith (projectspeccy.com) for the "Colour" logo.

Neil.
by -B-
Sat May 25, 2019 3:39 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

Done. Quite pleased with it.
Once again, thanks Dave for an excellent design.

1F1B1C26-BE5B-4D56-9BC9-B50AE93A374C.jpeg
8F7B1E5C-891D-47EF-B146-B9DCD00E993D.jpeg
by -B-
Fri May 24, 2019 9:41 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

That'll do. Now, which box is my photo printer in?

BOXSTICKER.PNG
by -B-
Fri May 24, 2019 8:10 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

I am making a sticker for my box. I've managed to label the buttons and LEDs based on the manual and trial and error but I'm not sure about the right-hand-side LED. Is it just an indication of power/operation?

Suggestions please...

BOXSTICKER.PNG

Neil.
by -B-
Thu May 23, 2019 4:08 pm
Forum: acorn atom and acorn system series
Topic: Acorn Atom power connections on motherboard.
Replies: 45
Views: 3708

Re: Acorn Atom power connections on motherboard.

I added jumpers to LK6 and LK7 instead of a wire bridge...

267762CC-207D-424B-8BC8-35E9B6A0DE66.jpeg
Neil
by -B-
Tue May 21, 2019 12:42 pm
Forum: acorn atom and acorn system series
Topic: Acorn Atom power connections on motherboard.
Replies: 45
Views: 3708

Re: Acorn Atom power connections on motherboard.

apt-e wrote:
Tue May 21, 2019 11:56 am
Whats the preferred way of posting photos on this from links only.
I usually upload the photo into attachments (see tab below text entry box) then click [insert inline].
I use my phone mostly to keep up with forum posts and that's where most of my photos are so it makes it easy.

Neil.
by -B-
Mon May 20, 2019 5:04 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

Yes, LK2 was the culprit!

Thanks Kees.

B9C85EDC-21A4-49BB-9090-D4B16A601C7B.jpeg
by -B-
Mon May 20, 2019 1:21 pm
Forum: acorn atom and acorn system series
Topic: AtomSID
Replies: 36
Views: 5485

Re: AtomSID

I would like to add SID sound to my Atom. Has anyone had PCB's made that can sell me one or supply the gerbers? I will probably use a SID clone on the board that can be either 6581 or 8580, is there a preference for the 9v over the 12v chip from the point of view of building the board? Neil. PS: @os...
by -B-
Sun May 19, 2019 11:08 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

Hi Dave,
I have adjusted the video to HDMI board using the colour test program.
But the manic Miner start screen (moving letters see previous post) are red and yellow when Kees’ YouTube video also shows orange and blue.
I have VIA 6522 installed. Is there something else?
Can you reproduce it?

Neil.
by -B-
Sun May 19, 2019 4:42 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

So, after uninstalling the version of the Xilinx ISE software that came with the programmer, signing up to Xilinx and downloading the latest VM version, I could not get the USB devices working. So I uninstalled that, looked at some youtube videos on the subject and decided to install the Windows 7/X...
by -B-
Sun May 19, 2019 2:35 am
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

8K video RAM and noise killer board received today, built and working...

1791B5ED-4820-4F3F-909A-8849937417B2.jpeg
FB852D8D-F1DB-400F-98AE-44DB1056C5EA.jpeg
Many thanks to @hoglet.
by -B-
Wed May 15, 2019 10:56 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

I’ve given up for tonight, I have an early flight in the morning. It’s Windows 10 64 bit. I think it’s 14.7 of the ISE design suite with v13.1 of iMPACT. I installed it from the disc that came with the programmer as the Xilinx web site were asking a lot of questions before letting me download. Bound...
by -B-
Wed May 15, 2019 9:11 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

My programmer finally arrived :D But, I have a problem with the programmimng... Everything goes as per the instructions until I get to... An "Auto Assign Configuration Files" dialog box will come up, click [Yes]. I click yes and the egg timer comes up for a few seconds then Impact closes. ...
by -B-
Wed May 15, 2019 4:02 pm
Forum: acorn atom and acorn system series
Topic: Acorn Atom power connections on motherboard.
Replies: 45
Views: 3708

Re: Acorn Atom power connections on motherboard.

Do you have a multimeter?
Check for continuity between the large exposed area where the regulators used to be (this is GND) and the wires.
The pad furthest from the edge of the board should be +ve
by -B-
Fri May 10, 2019 11:13 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

I am happy to send you three resistors of 4.7k Its OK Roland, I'll wait until Reichelt sort out my order. Like I said before, I can't program the CPLD just yet anyway. Here's the progress so far, just the HDMI hole to make, add 5 resistors, insert the comparators and get the right spacers for the P...
by -B-
Fri May 10, 2019 8:41 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

It gets worse!
They have also sent me 10Mohm instead of 10K.

I've complained to Reichelt and asked for the correct parts.
That'll take them a few working days to sort out but I don't have my programmer yet so I can potentially wait.
That's dulled my excitement somewhat.

Neil.
by -B-
Fri May 10, 2019 7:32 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

How important is is that R2 and R4 are 1K1 1% and metal film?

Reichelt have sent me 7K5 in a bag marked up as 1K1.
I have some carbon film ones that I can put in series to get 1K1 until I reorder the proper ones.

Neil.
by -B-
Fri May 10, 2019 5:24 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

I think I have everything now except the programmer.

906F1CB2-7012-46EA-A1A9-D3C43FC96E5C.jpeg

Neil.
by -B-
Fri May 10, 2019 3:16 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

No, not built yet, still waiting for a few parts.
I just want to be prepared, and a recent incident has shown me that I need to read everything thoroughly before I start firing messages off to people :wink:
by -B-
Fri May 10, 2019 2:56 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

Thank you - I want to make sure my oranges are right!
by -B-
Fri May 10, 2019 2:36 pm
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

@Hoglet,
Can you share the programme for the test card that shows both colour sets. Is it in the Archive?

Many thanks,

Neil.
by -B-
Fri May 10, 2019 8:45 am
Forum: acorn atom and acorn system series
Topic: Atom Video to HDMI Adapter
Replies: 269
Views: 25937

Re: Atom Video to HDMI Adapter

Mine came too - just waiting for the rest of the parts to arrive. I tried a few on for size.

07D553DE-8D5A-4C5A-ACA6-AF4863B5E4E8.jpeg
Neil.
by -B-
Thu May 09, 2019 9:02 am
Forum: acorn atom and acorn system series
Topic: YARRB [SOLD OUT]
Replies: 287
Views: 30509

Re: YARRB

I notice you still have the zero page ram in your Atom (IC51 and 52). You can remove these as well. I wasn't sure about those, but when your instructions said " All 2114 at the left side of the 6502" I should have tried it. My worry is that I break something but the Atom is proving to be ...
by -B-
Tue May 07, 2019 11:23 pm
Forum: acorn atom and acorn system series
Topic: YARRB [SOLD OUT]
Replies: 287
Views: 30509

Re: YARRB

This board is excellent!

Many thanks Roland.

Now, the 12k games that would not run before, are all working. Could I have had a dodgy text RAM chip?

Neil.
by -B-
Tue May 07, 2019 10:20 pm
Forum: acorn atom and acorn system series
Topic: YARRB [SOLD OUT]
Replies: 287
Views: 30509

Re: YARRB

YARRB kit was in my post box when I got home tonight.
Now built and installed and trying to work out how to use it.
D173DC8E-CCD0-43D2-86AA-84AC0F42E819.jpeg
Neil.

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