NeoVGA: Lagless, pixel-perfect line doubler for Neo-Geo MVS and AES

mikejmoffitt · Feb 17, 2016

My luck is not so great recently... with a careless slip of the hand, it looks like I've damaged my MV-1C. I'll have to see if I can borrow the MV-4F or fix up this MV-2F, or get yet another PCB...

buaku · Feb 17, 2016

Well, that's just horrifying! Good luck!

mikejmoffitt · Feb 18, 2016

I sourced a replacement NEO-GRZ chip off eBay for $40 (from a single-board KoF 2003 PCB). I might play with trying to get an MVS game running on that thing too, it'll be fun to play with for parts.

tacoguy · Feb 18, 2016

DaytimeDreamer said:
I guess when this is finalised there will be instructions on how to solder it to different revisions of AES and MVS.

Agree on the "pay more, worry less" approach. Take your time with this.

Xian Xi said:
For what you are making, for me, I have no problem with the cost going up. I'd rather pay $200 for a good, reliable product than $100 for an iffy one. Wiring schematics to the video DAC on each board should be simple as most are already documented.

buaku said:
Yeah, I'd be willing to pay more for a better product.
How much are just RGB to component encoders going for these days? I thought I paid around 100 for those years ago.
I would expect something like this to cost a bit more. This seems way more complicated and needs more smarts on the boards.

I share the same sentiment as everyone here.

mikejmoffitt · Feb 18, 2016

I worked very hard and fixed up my MV-2! It's annoying though - every Neo-Geo I've tried has slightly different video timings! I might have to have different firmware loaded for different Neo systems, or groups of neo systems.

The image in the picture isn't quite perfect - there's some oddness on the left because I basically did a hack to get this running without more work:

mikejmoffitt · Feb 18, 2016

Just placed an order for Rev. 2:

1

mikejmoffitt · Feb 19, 2016

Trying another board house for this order. Can you guess who?

Xian Xi · Feb 19, 2016

Is it the one in Jersey?

SNKBossKilla · Feb 22, 2016

So excited for this! Following Closely! Awesome work!

mikejmoffitt · Feb 23, 2016

Xian Xi said:
Is it the one in Jersey?

It's coming from DirtyPCBs. In the past, they've been great, so we'll see how it is.

AES club · Feb 23, 2016

Hope all is going well with development and please add me to your list!

Cheers!

Xian Xi · Feb 23, 2016

Forgot to ask and I can't remember if I read it anywhere in the thread but does the NeoVGA also support scanlines?

mikejmoffitt · Feb 23, 2016

Yep, right now it has 100% scanlines and ~40% scanlines. Of course, you may also have zero.

All features I'm describing include ones available for CPS2, or any other system I add support for.

Xian Xi · Feb 24, 2016

Noice.

buaku · Feb 24, 2016

mikejmoffitt said:
Yep, right now it has 100% scanlines and ~40% scanlines. Of course, you may also have zero.

All features I'm describing include ones available for CPS2, or any other system I add support for.

Soo other systems.... has it been asked if this could ever work for the Dreamcast?
Already got HDMI for the N64, all I'd ever want after that is the NeoGeo, SNES and DC!
I thought I read in other places HDMI for the SNES would be painful.

xsq · Feb 25, 2016

awesome stuff is happening in here...

Xian Xi · Feb 25, 2016

buaku said:
Soo other systems.... has it been asked if this could ever work for the Dreamcast?
Already got HDMI for the N64, all I'd ever want after that is the NeoGeo, SNES and DC!
I thought I read in other places HDMI for the SNES would be painful.

The dreamcast already supports VGA output. If you want HDMI, you could just use a VGA to HDMI converter.

buaku · Feb 25, 2016

Xian Xi said:
The dreamcast already supports VGA output. If you want HDMI, you could just use a VGA to HDMI converter.

Yeah, but I didn't think all games worked with VGA output.

TheBurgerKing · Feb 26, 2016

You are correct. Not all games work with the VGA adapter. Here is a link to a list of Dreamcast games that work with the VGA adapter.

http://www.epforums.org/showthread.php?56169-Dreamcast-VGA-Compatability-list-amp-Guide

Xian Xi · Feb 26, 2016

You'd have to modify some code on the game disc for those games to work via VGA. I guess the best work around would be to convert RGBS to VGA so it works with all games.

mikejmoffitt · Feb 29, 2016

Can't wait to try the new board out a little later today:

I haven't figured out the best way to keep this cheap and also facilitate installs, but the inputs are now 0.05" pads, spaced nicely for the common ribbon cables you can get for cheap. I'd just include four short ribbon cables to easily attach to the pads as needed, which lets the connections be organized without much difficulty.

GadgetUK · Feb 29, 2016

Sweet board!

buaku · Feb 29, 2016

Nifty!

XeD · Mar 1, 2016

Man I can't wait for this. Looking good Mike

fluxcore · Mar 1, 2016

Very nice looking indeed!

NeoVGA: Lagless, pixel-perfect line doubler for Neo-Geo MVS and AES

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