Search found 555 matches

by Smonson
Mon May 22, 2023 2:02 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

Haha, just messing around, but it's technically possible to fit the FPGA under the shifter. The real problem would be what would I do when it turns out one of the pins isn't quite soldered. Hot air isn't very good for IC sockets...

Screenshot from 2023-05-22 22-57-25.png
Screenshot from 2023-05-22 22-57-25.png (631.92 KiB) Viewed 1010 times
by Smonson
Sun May 07, 2023 2:42 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

I've got the dev board and played around with it a bit over the weekend. From testing it seems that each LC can hold somewhere around 4 bits of data in the form of registers, so with more than 800 excess LCs on the chip, I could easily put a little startup message in there, which would be cool. (add...
by Smonson
Tue May 02, 2023 4:40 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

I'm not sure this has anything to do with Intel specifically. Xilinx parts availability is not much better. Probably the only reason that Lattice parts are more available to the general public is because Lattice doesn't have so many big customers as Intel/Altera and Xilinx/Amd. Probably true. I jus...
by Smonson
Tue May 02, 2023 4:21 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

Has anyone looked at Trion from a company called Efinix? I saw some retro project using one of their boards and it seems they are available and not _too_ expensive. They are a bit overpowered for a project like this, though. Might be useful for other designs? I'd never even heard of them until now.
by Smonson
Mon May 01, 2023 2:47 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

It's ... ... ALIVE!!! * no guarantees I feel your frustration. Most of my FPGA work has faltered. I have been lucky to grab some QMTech Cyclone V boards to continue developing in some guise for a while. However building boards is impossible due to chip availability. It's been a rough three years fo...
by Smonson
Mon May 01, 2023 2:43 am
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

STILL no MAX-Vs available. Intel is obviously not prioritising these parts and I've got to move on. It has been three years! I have ordered a Lattice FPGA dev board and have started looking into how the open-source tools work. Being FPGAs, they cost more and have more pins to solder, but that is of...
by Smonson
Fri Dec 30, 2022 1:35 pm
Forum: FPGA DEVELOPMENT
Topic: New shifter implementation 'THOUGHTS'
Replies: 30
Views: 14810

Re: New shifter implementation 'THOUGHTS'

It’s a pity that the replacement shifter won’t be able to access memory as 64-bit width to allow better bandwidth. There's no technical reason why the RAM --> SHIFTER bus couldn't be wider than 16 bits. Is that how they do it on the TT to get the higher resolutions? I guess it would be possible to ...
by Smonson
Fri Jul 08, 2022 11:44 am
Forum: SOFTWARE
Topic: The Atari Logo
Replies: 4
Views: 1327

The Atari Logo

I was looking into the Atari logo last night, because I wanted to transfer it to the back of an old laptop that I've recently acquired to run my vinyl cutter. I used the one from Wikipedia's article on Atari Inc. After I applied it, I realised that it's not right. On close inspection, the sides of t...
by Smonson
Tue May 31, 2022 5:10 am
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

Ah. I missed that you wanted to use the original ST video connector. I thought you were still working on using a separate VGA output. My first prototypes used a new connector, but it's difficult to physically mount a VGA socket on the ST case without cutting, so I changed plans. Many people use an ...
by Smonson
Mon May 30, 2022 11:28 am
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 222
Views: 93243

Re: Sidequest: VGA scan doubler

Hi Smonson, Cool project. How are you doing? Hi ijor , long time no see. Thank you! I'm doing quite well, just a few health concerns these days. My warranty ran out in 2020 it seems. How are you? Don't despair, it is very likely that these chips will be available next year, but almost certainly not...

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