VSU: Video playback

por rigues en 01-11-2009, 21:28
Tema: Hardware
Idiomas:

While people are discussing new FPGA video chip implementations and other people are discussing what defines an MSX in the first place, the development of the VSU (Video and Sound Unit) continues. At the MSX Jau 2009 user meeting in Jau, Brazil, Ricardo Oazem showed a new feature of his VSU hardware expansion: it's now possible to play back full screen video (AVI files). A seven minute demo of this new feature has been uploaded to YouTube. Now, if Pixar would be so kind to create intro cut scenes for our MSX games.. but we'll get there.. some day!

Relevant link: VSU video playback

Comentarios (26)

Por iamweasel2

Paladin (685)

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02-11-2009, 06:43

It is really amazing, VSU is getting better and better. Smile

What I don't get it yet is how it is playing mp3 and avi videos with full screen. I believe Z80 can't handle those tasks by himself, right? So is there a co-processor or a special hardware in VSU that aids the z80 to handle those tasks?

Por SLotman

Paragon (1238)

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02-11-2009, 15:34

Yes, there is a decoder chip, that process the mp3s and videos Smile
And the better: you tell it to "play that file" and "forget about it". You don't need to waste precious Z80 cycles doing streaming Smile

Por wolf_

Ambassador_ (9896)

Imagen del wolf_

02-11-2009, 15:39

And where is that mp3 file located? If it's being streamed from a HD, SD, CF, CD etc. then I guess the file system still has stuff to do. If so: is the file system usage constant per int? If not, it may be tricky to use an MP3 as background music for an action game as it requires constant availability of resources.

Por RobertVroemisse

Paragon (1300)

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02-11-2009, 16:28

I haven't seen the video yet but what is the resolution, colordepth, framerate and sound quality of these videos? Maybe a stupid question, but like I said, haven't been able to watch the video.

Por iamweasel2

Paladin (685)

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02-11-2009, 16:36

That's cool, having a decoder chip opens endless possibilities to new games as well as allow us to enhance old classic games. Smile
Can this decoder chip be used to other tasks as well (as a co-processor) or it is dedicated to the video and mp3 playing?

Por SLotman

Paragon (1238)

Imagen del SLotman

02-11-2009, 19:41

the chip can only process mp3/video, afaik and cannot be used for other tasks. The mp3s were stored on a internal CF card (or SD? I don't know), which the chips reads from without needing any resource from MSX. I guess the video part (which Oazem was still finishing on MSX Rio) works the same way.

What the video doesn't show, but Oazem told me he wanted to do is to have the other chips from VSU to be able to overlap with the video chip. Don't know if he actually implemented that or not, but would be *very* nice to have. (maybe "porting" LD games?)

Por RobertVroemisse

Paragon (1300)

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02-11-2009, 19:53

DAMN! That looks good! I see endless gaming possibilities. Great work! LOL!

Por JohnHassink

Ambassador (5587)

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03-11-2009, 16:47

I'm speechless. Incredible.

Por jujuba

Supporter (15)

Imagen del jujuba

03-11-2009, 16:59

Toma, gringaiada!!!

Por spl

Paragon (1470)

Imagen del spl

03-11-2009, 22:43

Amazing!!! Running Naked in a Field of Flowers

Por muffie

Paladin (933)

Imagen del muffie

03-11-2009, 22:59

Hmmmmmm, looks appropriate to discuss that along with the Poll...
I'm really excited to see the VSU results, but, as long as does not fit into a cartridge, with a game also burned inside the cart and using MSX original video output... It's not MSX! Big smile

Por RobertVroemisse

Paragon (1300)

Imagen del RobertVroemisse

04-11-2009, 07:47

@Slotman: Have you checked your mail yet?

Por Randam

Paragon (1398)

Imagen del Randam

04-11-2009, 19:36

Now if only it had internet access too, it'd be the 'ultimate' upgrade.

Por iamweasel2

Paladin (685)

Imagen del iamweasel2

04-11-2009, 21:07

Well, to me it is already the ultimate upgrade. You must remember that it started as a video display unit with 9958 and 9990 mixed, and now it has an OPL4 chip and a mp3/avi decoder chip. Oazem made it far better than I could imagine it. I can only imagine all the classic games that can now be enhanced with mp3 music and new backgrounds and sprites with this hardware when it is available. Smile

Por iamweasel2

Paladin (685)

Imagen del iamweasel2

05-11-2009, 11:25

btw, is there any hardware modification that we need to do in our computers to install VSU? What about the original msx video out, is it connected to the VSU? In the video we couldn't see that...

Por muffie

Paladin (933)

Imagen del muffie

06-11-2009, 14:01

AFAIK, it's a huge external case with a cable that you connect to a cartridge slot.
It have its own power and video output.
www.gagagames.com.br/wp-content/uploads/2009/09/msxrio-VSU.jpg
Somehow reminds me one of my old wishes: Use my old (and dead) Sharp Hotbit as a PC keyboard.

Por iamweasel2

Paladin (685)

Imagen del iamweasel2

08-11-2009, 03:13

Yes, it has its own video output since the msx slot doesn't have a video signal... But I wonder if it is wired directly to the msx motherboard or if it is getting the vdp signal from the video (or rgb) output...

Por Sd-Snatcher

Hero (582)

Imagen del Sd-Snatcher

08-11-2009, 12:00

Why connect it to the internal vdp?, the vsu owns 2xv9958.

Por iamweasel2

Paladin (685)

Imagen del iamweasel2

08-11-2009, 12:44

Well, AFAIK to new apps/games in fact there's no need. But if the idea is to improve old games, by adding new backgrounds and enhancing graphics, it would be nice to have the internal vdp signal mixed with the new ones, this way you wouldn't have to patch each old game you want to improve to use the new vdp instead of the original (internal one). You could leave the original game as it is and only change the code to add the new features.

Por syn

Prophet (2065)

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22-07-2015, 19:38

I am really curious about what happened to this marvelous project. I assume its cancelled, what were the reasons? technical problems? costs? lack of interest?

Por tvalenca

Paladin (747)

Imagen del tvalenca

23-07-2015, 17:12

We simply know it was cancelled, but there wasn't an official note about that. Maybe you should ask @tecnobytes.

One thing is clear: they're using VSU parts to make Shockwave and Powergraph carts.

Por darkschneider666

Supporter (8)

Imagen del darkschneider666

31-07-2015, 13:46

syn
As you can check here: http://www.msx.org/forum/msx-talk/trading-and-collecting/new...
They are working in this new project and they're having money issues

In my humble opinion VSU is an amazing project, a new MSX is even better, But remember theses IC (V9990, V9958 and OPL4) aren't so easy to find, they are expensive, so 4x V9990, 2x V9958, 1xOPL4. I guess a new MSX it's more easier to achieve.

tvalenca
Shockwave and Powergraph they are carts that only uses OPL4 and V9990 isn't nothing like VSU

Por syn

Prophet (2065)

Imagen del syn

31-07-2015, 14:22

Yeah I read that about the new msx, I just assumed this VSU was cancelled BEFORE that so I wonder what the reasons behind that.

But what you are saying makes perfectly sense.

Por tvalenca

Paladin (747)

Imagen del tvalenca

31-07-2015, 17:53

darkschneider666 wrote:

tvalenca
Shockwave and Powergraph they are carts that only uses OPL4 and V9990 isn't nothing like VSU

I only said they may be using all the YMF278B (OPL4) and V9990 chips they bought to the VSU assembly line to assemble Shockwave and Powergraph carts instead. I'm not comparing anything! I can tell the difference!

And those chips may be hard to find nowadays, but we're talking about an almost 10-year old project. They had those chips back in the day, be sure of it. I wasn't paying attention to the scene back then, but what I heard about is they were very close to release the VSU. And they are talking about a new MSX, with embedded V9990 and OPL4... so I'm convinced they still have plenty of chips.

Por NYYRIKKI

Enlighted (5876)

Imagen del NYYRIKKI

12-08-2015, 11:05

What I *think* was the case with VSU is that you had to disconnect or disable the original VDP and plug in VSU to cartridge port instead... At least I would start from this kind of approach on this kind of project.

Por iamweasel2

Paladin (685)

Imagen del iamweasel2

15-08-2015, 04:29

I remember some modification to the original machine was needed (with the VDP).