Search found 504 matches

by kevtris
Thu May 07, 2015 12:57 am
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 238306

Re: Hi-Def NES HDMI Adapter for the NES

Here's update #7. This time I totally redo the board layout, and I took a time lapse video of me doing this. You can watch the board "grow" from nothing to completion! CopyNES USB was added, a 5V buck regulator on-board, and a form-factor re-do so it will properly fit the toploader. https://www.yout...
by kevtris
Wed Apr 22, 2015 3:45 pm
Forum: General Stuff
Topic: Retro VGS console
Replies: 48
Views: 7294

Re: Retro VGS console

What kind of Mhz rating do FPGA's come in, or do FPGA's somehow generate their own clock signal? You feed a clock into the FPGA (or multiple clocks- most can accept 8 or more clocks, even cheap/small ones) and then it has several PLLs that can convert the clock into other frequencies you need. 150M...
by kevtris
Wed Apr 22, 2015 12:28 am
Forum: General Stuff
Topic: Retro VGS console
Replies: 48
Views: 7294

Re: Retro VGS console

tokumaru pretty much nailed what an FPGA is. It's a 'blank chip' that you can load up with your own custom logic hardware to perform a specific task. They exist in the realm between ASICs which are totally custom chips such as the NES CPU/PPU and standard products like logic chips and TTL chips and ...
by kevtris
Tue Apr 21, 2015 9:00 pm
Forum: General Stuff
Topic: Retro VGS console
Replies: 48
Views: 7294

Re: Retro VGS console

Too bad there's no one around with a complete retro FPGA videogame console design out there.... oh wait. I think I have one hiding in the closet somewhere. My FPGA console supports currently 17 fully/mostly debugged classic videogame systems. I dunno if they are looking for classic stuff or somethin...
by kevtris
Fri Apr 17, 2015 1:20 am
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 238306

Re: Hi-Def NES HDMI Adapter for the NES

One request on the CopyNES: the Everdrive is incompatible with it and won't boot because the BIOS reading fails. Would it be possible to have some sort of disable switch so that the CopyNES would be completely disabled instead of having to disable itself via BIOS code on boot? I was going to have i...
by kevtris
Thu Apr 09, 2015 10:40 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 238306

Re: Hi-Def NES HDMI Adapter for the NES

Update #6 is now posted.

https://www.youtube.com/watch?v=5fwdTdg ... e=youtu.be


Looks like I'm about done on the software side. The things left:

* copynes
* updating via cart
* audio register viewer
* PCB redesign to fit in the toploader under the main PCB
by kevtris
Sun Mar 15, 2015 6:02 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 238306

Re: Hi-Def NES HDMI Adapter for the NES

Update #5 has been posted. The brightness on the HDMI output is a bit blown out but this is because of the capture card. I didn't spot it until it was rendered and posted. bleh. Every time I capture something it seems to screw it up in a different way. Anyways, I show a couple games (Duck Maze, Orb ...
by kevtris
Tue Jan 13, 2015 12:31 am
Forum: NES Hardware and Flash Equipment
Topic: Arcade Famiclone board
Replies: 19
Views: 5367

Re: Arcade Famiclone board

Final installation of the board RE series is now up.

https://www.youtube.com/watch?v=re9O388mtJU

Link's on the description for the file with all my info about this board in it. I set it to mapper #124 and it is an NES 2.0 file due to the size of the CHR ROM (2Mbytes).
by kevtris
Sun Jan 11, 2015 6:34 pm
Forum: NES Hardware and Flash Equipment
Topic: Arcade Famiclone board
Replies: 19
Views: 5367

Re: Arcade Famiclone board

I think I remember reading that the 2A03C and lower (including letterless) don't have the tonal noise mode, and that the 2A03E and higher do. I can confirm the no-rev 2A03's I have do not support looped noise. On the die, the LFSR for noise is directly connected for white noise, so the switching fo...
by kevtris
Sat Jan 10, 2015 2:24 pm
Forum: NES Hardware and Flash Equipment
Topic: Everdrive N8 vs CopyNES
Replies: 3
Views: 2284

Re: Everdrive N8 vs CopyNES

I discovered very recently that the Everdrive N8 does not boot if you have a CopyNES installed. I didn't have much luck at Krikzz's forum; I get the impression that he doesn't have a CopyNES that he could test against, and isn't really interested in supporting this fairly rare device. I was wonderi...
by kevtris
Sat Jan 10, 2015 1:34 pm
Forum: NES Hardware and Flash Equipment
Topic: Arcade Famiclone board
Replies: 19
Views: 5367

Re: Arcade Famiclone board

Where you got those PAL-M (Brazil) CPU/PPU (UM6547/UM6548) combo from Kev ? Jason (gametech.us) let me borrow them along with the following: RP2A03 (no rev) RP2A03E RP2A03G RP2A03H RP2A07A RP2C02B RP2C02D RP2C02E RP2C02G RP2C02H RP2C07A-0 for testing on the HDMI NES doodad. I was thinking of runnin...
by kevtris
Fri Jan 09, 2015 3:51 pm
Forum: NES Hardware and Flash Equipment
Topic: Arcade Famiclone board
Replies: 19
Views: 5367

Re: Arcade Famiclone board

The second installment has been posted. In this video I finish up the hardware reverse engineering and describe and show how I designed a small UART board to aid in reverse engineering the board. Hopefully in a few days I will finish up the document and post that and get it running on the FPGA. http...
by kevtris
Sun Jan 04, 2015 11:28 pm
Forum: NES Hardware and Flash Equipment
Topic: Arcade Famiclone board
Replies: 19
Views: 5367

Re: Arcade Famiclone board

As promised, I received the board and started reverse engineering it. Memblers was indeed right; the 24 pin chip is an MMC1 clone. the 40 pinner is an MMC3 clone as suspected also. Here's the first video installment of me reverse engineering it. https://www.youtube.com/watch?v=ocjxfSn2DYk&feature=yo...
by kevtris
Wed Dec 31, 2014 8:56 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 238306

Re: Hi-Def NES HDMI Adapter for the NES

Here's the 4th update! Things added since last time: * DVI Mode * Screen is centered * Pixel masking fixed * Set the relative audio volumes * Fixed extraneous pixels * Hot keys were added * Overclocking * Palettes! * Menu info is now correct * Fixed the powerpak NSF player https://www.youtube.com/wa...
by kevtris
Thu Dec 25, 2014 2:33 pm
Forum: NES Hardware and Flash Equipment
Topic: Arcade Famiclone board
Replies: 19
Views: 5367

Re: Arcade Famiclone board

Neat, I look forward to the analysis. It's a shame it is the NTSC PPU clone, I was hoping we'd find some yet unseen 2C03 or other RGB PPU clone. I don't think they exist. these boards I think tended to be low production numbers, so they used available parts. There's nothing custom on here other tha...