.set PSR_USR_MODE,  0x00000010
	.set PSR_FIQ_MODE,  0x00000011
	.set PSR_IRQ_MODE,  0x00000012
	.set PSR_SVC_MODE,  0x00000013
	.set PSR_ABT_MODE,  0x00000017
	.set PSR_UND_MODE,  0x0000001b
	.set PSR_SYS_MODE,  0x0000001f
	.set PSR_MODE_MASK, 0x0000001f
	.set PSR_T_BIT,     0x00000020
	.set PSR_F_BIT,     0x00000040
	.set PSR_I_BIT,     0x00000080

	.set EWRAM_START, 0x02000000
	.set EWRAM_END,   EWRAM_START + 0x40000
	.set IWRAM_START, 0x03000000
	.set IWRAM_END,   IWRAM_START + 0x8000

	.set INTR_VECTOR, IWRAM_END - 0x4

	.set INTR_FLAG_VBLANK,  1 << 0
	.set INTR_FLAG_HBLANK,  1 << 1
	.set INTR_FLAG_VCOUNT,  1 << 2
	.set INTR_FLAG_TIMER0,  1 << 3
	.set INTR_FLAG_TIMER1,  1 << 4
	.set INTR_FLAG_TIMER2,  1 << 5
	.set INTR_FLAG_TIMER3,  1 << 6
	.set INTR_FLAG_SERIAL,  1 << 7
	.set INTR_FLAG_DMA0,    1 << 8
	.set INTR_FLAG_DMA1,    1 << 9
	.set INTR_FLAG_DMA2,    1 << 10
	.set INTR_FLAG_DMA3,    1 << 11
	.set INTR_FLAG_KEYPAD,  1 << 12
	.set INTR_FLAG_GAMEPAK, 1 << 13