Gauging Interest, MV1C

tcdev · Apr 3, 2013

Craig said:
In xian xis thread?

Probably in another thread when I have something to report, but this thread was "Discuss" and I'm discussing it.

Kyuusaku · Apr 3, 2013

tcdev said:
I'd be interested to know what you've "worked out" in terms of the graphics engine. Is it something you've already prototyped, or is it all on paper? I don't see the point in duplicating our efforts for no good reason...

By worked out I mean the algorithms for VRAM control, evaluation, rendering etc and I've prototyped pretty efficient asynchronous logic to implement them. The synchronous logic I have is more of a guideline and will be revised when I can analyze the erratic behavior of the ASICs.

I think our design goals are pretty different; I'm using hard processors, a humble FPGA and one to two CPLD so there's 0 modularity or room for expansion. I'm working by myself currently but someone else might handle board production and distribution. If you'd like to join up I can't turn down help, come hang out on #neogeodev at freenode.

christoph · Apr 3, 2013

You guys are so awesome for working on this!

tcdev · Apr 3, 2013

Kyuusaku said:
By worked out I mean the algorithms for VRAM control, evaluation, rendering etc and I've prototyped pretty efficient asynchronous logic to implement them. The synchronous logic I have is more of a guideline and will be revised when I can analyze the erratic behavior of the ASICs.

I think our design goals are pretty different; I'm using hard processors, a humble FPGA and one to two CPLD so there's 0 modularity or room for expansion. I'm working by myself currently but someone else might handle board production and distribution. If you'd like to join up I can't turn down help, come hang out on #neogeodev at freenode.

Looking at your post history and what you've said above I can see that you're definitely well-versed in all things Neo Geo!

I'll stop polluting this thread and hopefully discuss more on freenode - thanks!

xsq · Apr 4, 2013

tcdev said:
How popular is the memory card support likely to be? To be honest, I was not intending on supporting that at all... or at least a removable version.

Hard to say... but if you look at NeoTurfMastas projects (like NeoSafeMasta, NeoCardMasta and SaveMastaOne), there seem to be quite a few people that are into it. I'd certainly like to save my highscores to a mem card, so....

tcdev said:
Why would you want a socketed BIOS when you can use in-system-programmable flash?

I was thinking of a new board very close to the MV1C, never thought about a flash solution... not a bad idea!

Oh and @all:

christoph said:
You guys are so awesome for working on this!

distropia · Sep 13, 2013

This thread is so interesting that don't deserve to be lost in the guts of the forum. Any advance on this? Is someone working on an LSPC or FPGA?

Besides of that, I got a bunch of mv1c's with good components but about to get broken by trace corrosion. I was thinking in making a board replacement, exact clone but with better quality, and move all the components from about-to-fail 1c's to this, or from jamma MV0 boards.

Xian Xi · Sep 13, 2013

A clone board with a nice thick solder mask would be good.

hyper · Sep 13, 2013

seconded

shadowkn55 · Sep 13, 2013

The work I did for the solderless NBM was just the prelude to terror.

distropia · Sep 13, 2013

ok. Using Eagle is easy (once you know), but it must be some way to simply clean a board of components, scan it and maybe some script can translate a picture to a eagle design (?). Then just add two inner layers for GND and VCC (that's easy). Do someone here can enlighten me if there's such eagle script?

Another limitation is that eagle don't support drop shaped vias.

Any advice is welcomed.

And you, LSPC guys, what's up?

RoadRacer12 · Jun 2, 2016

Did anyone ever come around to doing this?

I see this thread is nearly 3 years old since the last post. Has any progress been made on a replacement motherboard, this kind of thing highly interests me.
I've been working on my own board replacement for PC-Engine systems over the last few years. Doing this on a Neo-Geo board would be pretty cool too.

Apocalypse · Jun 2, 2016

Why not making a new daughter board for MV-1FZ slots to convert them from horizontal to vertical slot?
Or just replacing the 90° connectors by straight ones.

Xian Xi · Jun 2, 2016

Apocalypse said:
Why not making a new daughter board for MV-1FZ slots to convert them from horizontal to vertical slot?
Or just replacing the 90° connectors by straight ones.

FZ in my experience has been one of the most unreliable MVS boards.

Apocalypse · Jun 2, 2016

Xian Xi said:
FZ in my experience has been one of the most unreliable MVS boards.

Ok but they are inexpensive and easy to find.
What about MV-1A, MV-1AX or MV-1B ?

GoodTofuFriday · Jun 2, 2016

Youd have my money for sure.

Xian Xi · Jun 2, 2016

Apocalypse said:
Ok but they are inexpensive and easy to find.
What about MV-1A, MV-1AX or MV-1B ?

MV1B I would agree with. The 1A, 1AX, FZ, FZS are the worst ones.

NeoTurfMasta · Jun 2, 2016

Apocalypse said:
Ok but they are inexpensive and easy to find.
What about MV-1A, MV-1AX or MV-1B ?

I made one for the 1B several years ago but never did anything with it.

I made them where you could just place them on top of the existing pins and solder down. So you dont have to remove the sockets.

Apocalypse · Jun 2, 2016

NeoTurfMasta said:
I made one for the 1B several years ago but never did anything with it.

I made them where you could just place them on top of the existing pins and solder down. So you dont have to remove the sockets.

That's a really good solution to me.
Inexpensive and straight forward.

NeoTurfMasta · Jun 3, 2016

Apocalypse said:
Inexpensive and straight forward.

That was the idea. I did find the connectors as well, but they aren't cheap. This seemed like a quick and easy solution.

BerryTogart · Jun 3, 2016

Depending on the price I'd be interested in one, what I'd look for is something that delivers Stereo, Memorycard, Unibios socket, etc. out of the box. (My current MV-1B conversion is a result of great people building parts and/or helping me out with custom boards, but if that ever fails to work that's a lot of parts to get (working) again)

Apocalypse · Jun 3, 2016

NeoTurfMasta said:
That was the idea. I did find the connectors as well, but they aren't cheap. This seemed like a quick and easy solution.

Yeah I've managed to find the ones used in MV-1AX and MV-1FZ/FZS:
http://www.neo-geo.com/forums/showt...d-connectors&p=3993111&highlight=#post3993111

RoadRacer12 · Jun 3, 2016

NeoTurfMasta said:
I made one for the 1B several years ago but never did anything with it.

I made them where you could just place them on top of the existing pins and solder down. So you dont have to remove the sockets.

That's a pretty cool and straightforward way to do that.

GTRetro87 · Jun 3, 2016

Xian Xi said:
How would the community feel about a newly designed MV1C?

They are becoming very scarce compared to 3 years ago and a lot of the ones floating around have some major issues and a lot of them are corroded and are ticking time bombs.

The Neo-YSA2 IC is a big problem, it handles audio as well as joystick inputs. It's happening more and more with this IC. All the other ones I've never had problems with or heard of problems with them either. Instead of trying to create a replacement IC, why not just build a better mobo? The new mobo would support a memory card, trackball, mahjong controller blah blah, maybe even have a better solder mask to help prevent corrosion even better than the original and last but not least as MKL said gold contacts for the connector.

Would the community back a newly designed MV1C that would support a memory card and meet or exceed the previous model? It would have the same footprint most likely.

Discuss.

I would absolutely LOVE a new repro'd MV1C!!!

I'd back a new design if it would be better than the original, whatever works to make it last longer and be more reliable.

However, I would prefer that the new design (whether close to original or not) would have the same components *needed* to install the NeoVGA; though I'm sure mikejmoffitt will figure out a way to install it regardless.

GoodTofuFriday · Jun 5, 2016

NeoTurfMasta said:
I made one for the 1B several years ago but never did anything with it.

I made them where you could just place them on top of the existing pins and solder down. So you dont have to remove the sockets.

Thats something i sure lots of people are interested in.

bochi · Jun 11, 2016

Wow I would love to buy one of those&#55357;&#56835;

Gauging Interest, MV1C

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