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ALIBE
10-10-2006, 09:25 PM
I convinced my son to hand me his non-functional Gameboy (I owe him a new one of course). I was wondering if anyone has in the past or know or is looking to interface the LCD w prop. Any pointers, guidance will be greatly appreciated.

I have attached the pin layout for the LCD from my GOOGs

Looking for:
1. what pins are applicable for such an interface
2. if one can use the TV or Terminal object

thanks in advance




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ALIBE - Artificial LIfe BEing. In search of building autonoumous land robot

http://fstop.crosscity.com/
http://icar.crosscity.com/

Lord Vader
10-10-2006, 11:28 PM
I don't really know if I can help you at all,
but I am really interested in know how to use
the LCD from a game boy color since I have
two just collecting dust. I was going to use
the BS2 or a Z8 encore!, and I asked about it
on the basic stamp forum but didn't get any thing.
maybe we can figure some thing out.

Lord Vader

Gadgetman
10-11-2006, 04:37 AM
I'm sorry, but it looks like nintendo is using a custom chip, and that the specs aren't publicly available...

If you REALLY want to find out how it works, find a GameBoy which is complete, hack it open and watch how it is wired .
Then remove the ROM, read it in a programmer and disassemble it to find the initialisation and other commands.
(you need to decode the HW I/O addresses used to be able to do it, though.)

I could probably do it... IF I happened to have a month or two of free time...
and was bored out of my skull...

Anyway, the most complete information on the GB can be found at http://www.devrs.com/ but as that is where the schematic you uploaded came from, you've probably already checked out that site...
(There may be some helpful information about RAM videomaps and such there, to aid in the disassembly work, but still... )

The only thing I can tell you is that it will want a stream of bitmap data at least 60 times/second, probably in a line-by-line scanning routine. But how that data is formatted is anyones' guess.

In other words; it's probably too much of a bother.
Get yourself a properly documented LCD instead, or if you want to be fancy, get an older Palm with serial port and load it up with a Basic interpreter which can then work as both display, graphics co-processor and input device.

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Desy2820
10-25-2006, 08:01 AM
Gadgetman,

I have an older Palm VIIx that I'd like to use as display output (serial LCD) /keypad input for a Basic Stamp, but I haven't had any luck in my web searching. Would you be able to post a link or point me in the right direction?

Thanks!

Glenn

flapdoodle_dinghy
10-25-2006, 08:55 AM
A page claiming you can interface a keyboard or use Basic Stamp and GB as a data logger is here:
http://gbdevers.freeservers.com/download/dl.html

Two zipped files.

Bill

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http://tech.groups.yahoo.com/group/parallax_propeller/

Gadgetman
10-25-2006, 02:07 PM
Desy2820 said...

Gadgetman,

I have an older Palm VIIx that I'd like to use as display output (serial LCD) /keypad input for a Basic Stamp, but I haven't had any luck in my web searching. Would you be able to post a link or point me in the right direction?



Try googling with the right keywords, and you'll find several Basic version for the Palm.

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Don't visit my new website...