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Guitar Hero Emulation Lines (R3 & R4) (Read 1579 times)
o12
Ex Member


Guitar Hero Emulation Lines (R3 & R4)
05/22/10 at 19:18:39
 
Hi,
So in the current design lines 15-28 aren't being used for anything, right?  Are resistors R3 and R4 purely optional, or do lines 15 and 16 on the GBA connector really need to be pulled to ground?

Also, the instructions specify "2K7ohm" resistors.  Should that read "2.7 KOhm"?
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Luke Skaff
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East Coast, USA
Re: Guitar Hero Emulation Lines (R3 & R4)
Reply #1 - 05/22/10 at 23:24:05
 
I am pretty sure R3 & R4 are required to make the DS think a guitar hero cartridge is inserted.  Pin 25-28 are not used for anything at this point.

2K7 stands for 2.7K and is correct.  Surface mount resistors use this labeling scheme.
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Achim Berg
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Re: Guitar Hero Emulation Lines (R3 & R4)
Reply #2 - 05/23/10 at 08:40:20
 
You are right with the description of both resistors. The guitar hero lines are not used at the moment but it makes sense to install both resistors for future updates of the occ.
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