#define PIC1_ADDR	0x20 + 0xC0000000
#define PIC2_ADDR	0xA0 + 0xC0000000		
#define PIC1_COMMAND	PIC1_ADDR
#define PIC1_DATA	(PIC1_ADDR+1)
#define PIC2_COMMAND	PIC2_ADDR
#define PIC2_DATA	(PIC2_ADDR+1)
#define PIC_EOI		0x20