Search found 485 matches

by Smonson
Sat Aug 08, 2020 3:08 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

Thanks @sandord! Graphing it like that makes it a lot easier to see the progression of colour, and it's not as bad as it could be :)

I think that's the last thing I was going to add to the FPGA code... I guess that makes it a final prototype.
by Smonson
Sat Aug 08, 2020 11:49 am
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

I wanted to add a scanline effect to the 'doubler, since a lot of people want to recreate the authentic mid-80s feel when they look at their Atari screens. Having anticipated doing this, I put 2 jumpers on the board, with one being for the scanline effect, and one spare one. For the HDMI mod, it's a...
by Smonson
Wed Aug 05, 2020 1:00 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

exxos called it yet again - it was a bad connection somewhere (in one of the RAMs, I'm fairly sure) Found when I set up monochrome mode again and discovered the problem solved. vidout14.jpg Now it's looking great again (albeit with only 2 bits for green until I fix that joint): vidout15.jpg My phon...
by Smonson
Wed Aug 05, 2020 9:13 am
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

I spent a fair chunk of last year working in Canberra's ANU at the NCI facility rolling out the new Gadi super computer and de/recomissioning the old Raijin one. Six months slog in the NCI data centre still gives me nightmares. I'm constantly amazed at the projects you roll out, mate. Its like magi...
by Smonson
Wed Aug 05, 2020 9:10 am
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

So the background of TransACT, for anyone who wasn't around, was that it was going to be this awesome, amazing city-wide LAN all running on fibre-optic cables and connection everyone to businesses and to each other on a high-speed link. Local traffic was going to be unmetered and thus free! This was...
by Smonson
Tue Aug 04, 2020 12:50 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

PaulJ wrote:
Mon Aug 03, 2020 5:21 pm
...building and deploying a STB we had a contract with a telecom in Camberra AU.
That was TransACT, wasn't it. Such a tragic waste of potential.
by Smonson
Tue Aug 04, 2020 12:49 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

Small world, Canberra is where I am! OK, so I put my previous hand-wired prototype back in the ST and it does not exhibit this gradient problem, which is good news. The difference between the boards is that the old prototype has the FPGA driving the RGB lines directly at 3.3v instead of going throug...
by Smonson
Tue Aug 04, 2020 11:06 am
Forum: HARDWARE DISCUSSIONS
Topic: Smonson's untitled simple harddisk project
Replies: 33
Views: 3923

Re: Smonson's untitled simple harddisk project

Right - I've got it working enough to install the ICD boot loader, and start using it. It's pretty cool to have it running. I had a couple of occurrences of a write error on sector 34 while copying files in the GEM desktop, but it didn't seem to corrupt the drive or the files... not sure what's so s...
by Smonson
Sun Aug 02, 2020 1:22 pm
Forum: HARDWARE DISCUSSIONS
Topic: Smonson's untitled simple harddisk project
Replies: 33
Views: 3923

Re: Smonson's untitled simple harddisk project

Aha, I actually just fixed another bug (typical, right after posting) and now ICD Pro detects the size OK and begins the format process. Finally I can tick that off the list. Next, I have to implement some of the 10-byte SCSI commands that ICD needs.
by Smonson
Sun Aug 02, 2020 12:04 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 157
Views: 26903

Re: Sidequest: VGA scan doubler

Have you done the usual , just touch various places on the pins on every chip to see if anything changes. Fingers make great diagnostic tools :lol: Sure did! But no change in the picture. I'm 90% of the way through building a second one, so if the problem is bad solder joints, hopefully the second ...

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