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#181563 - 26/09/2003 14:20 LCD pads on mainboard
Narkotic
member

Registered: 20/02/2002
Posts: 158
Hey guys... after opening the empeg and having bad luck... I noticed some little pads next to the CPU labeled LCD. I guess this is directed towards the developers of the empeg.. What do these pads do? Is this an abandoned idea for having an external LCD display? I'd take a picture of the pads but my player is on its way to Eutronix.

I tried to search for this first, on the FAQ and this board and saw nothing about it. Very surprising.. Unless my searching skills suck.

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#181564 - 26/09/2003 14:28 Re: LCD pads on mainboard [Re: Narkotic]
robricc
carpal tunnel

Registered: 30/10/2000
Posts: 4931
Loc: New Jersey, USA


This is from an Mk2 board. LCD headers visible right under where the CPU would be.
_________________________
-Rob Riccardelli
80GB 16MB MK2 090000736

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#181565 - 27/09/2003 16:07 Re: LCD pads on mainboard [Re: robricc]
Narkotic
member

Registered: 20/02/2002
Posts: 158
AH! Thanks Rob. Since I had a hard time playing wheres waldo, i'm going to attach the picture with the pads illustrated. Anyone have any ideas?


Attachments
180242-IMG_0172.sized.jpg (265 downloads)


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#181566 - 28/09/2003 19:42 Re: LCD pads on mainboard [Re: Narkotic]
pca
old hand

Registered: 20/07/1999
Posts: 1102
Loc: UK
Yes.

pca
_________________________
Experience is what you get just after it would have helped...

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#181567 - 28/09/2003 19:58 Re: LCD pads on mainboard [Re: pca]
RobotCaleb
pooh-bah

Registered: 15/01/2002
Posts: 1866
Loc: Austin
.heh.

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#181568 - 28/09/2003 22:40 Re: LCD pads on mainboard [Re: pca]
Narkotic
member

Registered: 20/02/2002
Posts: 158
aw, c'mon... something?

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#181569 - 29/09/2003 00:57 Re: LCD pads on mainboard [Re: Narkotic]
johnmcd3
enthusiast

Registered: 19/04/2001
Posts: 369
Loc: Seattle, WA (formerly Houston,...
I believe the "Yes" was in responding to "Is this an abandoned idea for having an external LCD display?".

We talked about it a tiny bit this summer in Amersfoort this summer.

John
_________________________
1998 BMW ///M3 30 GB Mk2a, Tuner, and 10 GB backup

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#181570 - 29/09/2003 10:06 Re: LCD pads on mainboard [Re: johnmcd3]
Narkotic
member

Registered: 20/02/2002
Posts: 158
oh.. ok. So these pads have been abandoned and they serve no purpose at all?

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#181571 - 30/09/2003 06:16 Re: LCD pads on mainboard [Re: Narkotic]
altman
carpal tunnel

Registered: 19/05/1999
Posts: 3457
Loc: Palo Alto, CA
They're the signals for a TFT panel; however, there are only 8 of them (the other 8 are GPIOs 2-9, which are very much in use). If you disabled the display, you could in theory drive an 8-bit active display - or even a TV out, using something like the Chrontel CH7003. ISTR there's LCD0-7, PCLK, LCLK and FCLK.

Another thing you could do is use bits 1-3 of the video data (the VFD only uses one in every 4 pixels from the video controller) and easily hook up another 3 displays that could show different things

Hugo

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#181572 - 30/09/2003 08:30 Re: LCD pads on mainboard [Re: altman]
Daria
carpal tunnel

Registered: 24/01/2002
Posts: 3937
Loc: Providence, RI
Another thing you could do is use bits 1-3 of the video data (the VFD only uses one in every 4 pixels from the video controller) and easily hook up another 3 displays that could show different things


Easily is relative, if I tried surface mount soldering I'd probably have a brick, but that would be cool. Imagine one display for gpsapp, one for whatever the next cool hack is, and one for the player visualizations. Seems like overkill to move the lyrics away from the player visualization but you could do that too.

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#181573 - 30/09/2003 17:22 Re: LCD pads on mainboard [Re: altman]
Narkotic
member

Registered: 20/02/2002
Posts: 158
COOL! Well, I guess that answers my question. Too bad I don't understand much of it. Thanks

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