Hi, forks! 
I got BBB and start enjoying.

I wonder How to work pullup pinmode at input in software.
 http://beagleboard.org/Support/BoneScript/pinMode/

I want to pull up P8_31(GIPO_10) as Input 、but it effect noting.
 1.b.pinMode("P8_31", 
b.INPUT_PULLUP<http://beagleboard.org/support/bonescript#input_pullup>
);
 2.b.pinMode("P8_31", 
b.INPUT<http://beagleboard.org/support/bonescript#input_pullup>, 
7, 'pullup');
Both are in same result and P8_31 never pulluped.
Of course <http://ejje.weblio.jp/content/of+course> when I connected a 
10Kohm resister between P8_31 and VDD3V3 , It pulluped and work fine.
I want to omit this resister.

Many chips (PIC & AVR & etc..) has software pullup mode and no need to 
connect extra resister.  But In BBB It doesn't work?? Always need extra 
resister?

My BBB's info:
*Your board is connected!*
BeagleBone Black rev 00A6 S/N 4613BBBK1318 running BoneScript 0.2.2 at 
192.168.7.2

I want some help, Please.

Thanks.

P.S.
I know in BBB it is limited 4mA or 6mA for GPIO current.
My question is total current limitation in BBB. Is there any limitation for 
total current?

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