Arm lpc2294 basic problems related to few Registers like DISPDATA_MASK

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girish09

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Hello friends,
I am complete beginner in ARM controller, actually i am working on LPC 2294, can anyone tell me what is that DISPDATA_MASK, ENABLE_MASK, REGSEL_MASK, actually this is lcd code working properly, i know function of Enable, Register select in 8051 and PIC programming but i am not getting what is this DISPDATA_MASK??? and I know function of PINSEL, but i am not getting what is mean by PCB_PINSEL??? I have attached my code file plz go through it .....i ahve not written this code but i have to understand it so plz i need help from experts

Please help me.......Thanks in advance.......
 

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