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DS development > Possible Video In/Out through Power Port.

#33045 - willgonz - Thu Dec 30, 2004 10:39 am

Well, I was looking at the FCC photos from the following link:
https://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=477796&native_or_pdf=pdf

When I looked at the P9 connector. Nothing too exciting there until you flip it over and see the following indications.

VIN (Video IN)???
SW (On the reset of the board SW stands for Switch)????
VGND (Video Ground)

I strongly believe there is some video out perhaps composite.
There wouldn't be audio out, because that would be done through the headphone jack.
There are 6 connections and two of them are used for Power.


Any ideas?
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#33047 - Spaceface - Thu Dec 30, 2004 11:06 am

from what I know from about a month ago is that people would hold the TV antenna against their DS or something and would recieve a splitted image of their DS...

a new cable for Darkfader to fix? ;)

#33048 - FluBBa - Thu Dec 30, 2004 11:41 am

VIN = VoltageIn
VGND = VoltageGround
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#33049 - TJ - Thu Dec 30, 2004 12:07 pm

Ah damn, you got me all excited there for a second.

#33051 - Spaceface - Thu Dec 30, 2004 12:35 pm

Well there was a guy who HAD video leaked onto his TV, for all I know that wasn't a hoax...

#33069 - ravuya - Thu Dec 30, 2004 5:27 pm

Spaceface wrote:
Well there was a guy who HAD video leaked onto his TV, for all I know that wasn't a hoax...


Yeah, my calculator does that too.
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#33084 - Alex Atkin UK - Thu Dec 30, 2004 6:17 pm

Yes, its an accident due to interference - nothing that can be used.

Also the extra pins in the power connector are identical to the GBA SP - they are for GBA SP headphones.

I dont see how it would be good using the DS on a TV anyway. The resolution is VERY low, the 3D rendering is pretty crap and you'd have to keep glancing down at the touchscreen even if it was displayed on the TV.
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#33092 - dagamer34 - Thu Dec 30, 2004 6:45 pm

Alex Atkin UK wrote:
Yes, its an accident due to interference - nothing that can be used.

Also the extra pins in the power connector are identical to the GBA SP - they are for GBA SP headphones.

I dont see how it would be good using the DS on a TV anyway. The resolution is VERY low, the 3D rendering is pretty crap and you'd have to keep glancing down at the touchscreen even if it was displayed on the TV.


Videos on game sites. Which makes me wonder how IGN.com and GameSpot.com get direct feeds for DS games. And during the Nintendo Gamers Summit, they had a cable coming from that port. Now, I doubt it was used for power as the demonstration they showed only lasted an hour so it must have been for something else...
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#33100 - mymateo - Thu Dec 30, 2004 8:08 pm

Most likely it was a specially made unit, possibly a special edition dev unit, that allows for things like TV out. In that case, the plug would be VERY different, allowing for extra connections without crippling the original functionality.

But one thing is for certain: that little port on any consumer unit does NOT allow for TV out... only power in and audio out.

Wouldn't it have been cool if they allowed the DS to be smart enough to detect speakers plugged into both the front and the back, and allow games to use them for true surround sound (as long as the game was programmed to use the feature, obviously)?

#33109 - ravuya - Thu Dec 30, 2004 9:55 pm

mymateo wrote:
Most likely it was a specially made unit, possibly a special edition dev unit, that allows for things like TV out. In that case, the plug would be VERY different, allowing for extra connections without crippling the original functionality.


I figure they're debug/testing machines (screenshots for bug-replication process), either that or they have some sort of additional chunk of hardware added to them that dumps framebuffer to memory cards.
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#33112 - willgonz - Thu Dec 30, 2004 10:24 pm

I seriously doubt they made special units just for the Nintendo Gamers Summit. There is no extra area on the board itself to house these extras, if they were going to do a special unit. Has anyone tried hooking up the SP head phones to the DS?

And about the interference. The video is displayed on the TV but it is static. If your calculator does this the same, then when you press 2 you would see 2 on the tv screen. Here is the video of that interference. http://www.dsupdate.net/Videos/DSTV.mov
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#33122 - dagamer34 - Thu Dec 30, 2004 11:24 pm

willgonz wrote:
I seriously doubt they made special units just for the Nintendo Gamers Summit. There is no extra area on the board itself to house these extras, if they were going to do a special unit. Has anyone tried hooking up the SP head phones to the DS?

And about the interference. The video is displayed on the TV but it is static. If your calculator does this the same, then when you press 2 you would see 2 on the tv screen. Here is the video of that interference. http://www.dsupdate.net/Videos/DSTV.mov


Majesco SP headphones work exactly the same on the DS.
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#33130 - tepples - Fri Dec 31, 2004 12:59 am

Alex Atkin UK wrote:
I dont see how it would be good using the DS on a TV anyway. The resolution is VERY low, the 3D rendering is pretty crap and you'd have to keep glancing down at the touchscreen even if it was displayed on the TV.

The TV signal, as generated by a game console's video chip, has 640x480 pixels. A hypothetical DS-on-TV adapter would use two stacked 256x192 pixel windows.
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#33138 - TJ - Fri Dec 31, 2004 3:34 am

Quote:
And during the Nintendo Gamers Summit, they had a cable coming from that port. Now, I doubt it was used for power as the demonstration they showed only lasted an hour so it must have been for something else...


They weren't real DS's.

That was the "Nitro Emulator" made for the Dev Kit, which is built by "Intelligent Systems". They also made the "WideBoy Advance" as well as many popular Nintendo games.

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#33142 - Zhila - Fri Dec 31, 2004 3:58 am

mymateo wrote:
Wouldn't it have been cool if they allowed the DS to be smart enough to detect speakers plugged into both the front and the back, and allow games to use them for true surround sound (as long as the game was programmed to use the feature, obviously)?


Factor5 has been making the MusyX audio driver for every Nintendo system N64/GBC and later. On all systems, surround sound is possible, using only 2 analogue channels (left and right), and still has very good quality (a good test case for this would be to play Star Wars Rogue Squadron and do the TIE Fighter audio test). Theoretically, it would be possible for a commercial GBA game to have surround sound capability, provided there is a surround sound system that could plug into a headphone jack.
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#33182 - SimonB - Fri Dec 31, 2004 12:51 pm

TJ wrote:
They weren't real DS's.

That was the "Nitro Emulator" made for the Dev Kit, which is built by "Intelligent Systems". They also made the "WideBoy Advance" as well as many popular Nintendo games.

[Images not permitted - Click here to view it]


Sure it wasnt an IS-NITRO-VIEWER ?

Simon

#33434 - Sebbo - Mon Jan 03, 2005 10:05 am

Zhila wrote:
Theoretically, it would be possible for a commercial GBA game to have surround sound capability, provided there is a surround sound system that could plug into a headphone jack.

heard of dolby pro logic II? (used by almost every first party gamecube game) it creates virtual surround using just stereo inputs. i've got cables that go from headphone jack to 2xRCA, so it wouldn't b that hard to wire it up, except u lose ur portability

ne one want to help me develop a set of headphones with two speakers mounted on each side and a dolby pro logic II decoder chip somewhere between the headphone jack and the speakers? ;)