constants.asm

SPRITES    = $0200

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PALETTES   = $0300

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CODES      = $066B

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PPUCTRL    = $2000
PPUMASK    = $2001
PPUSTATUS  = $2002
OAMADDR    = $2003

PPUSCROLL  = $2005
PPUADDR    = $2006
PPUDATA    = $2007

SQ1_VOL    = $4000
SQ1_SWEEP  = $4001
SQ1_LO     = $4002
SQ1_HI     = $4003

NOISE_VOL  = $400C
NOISE_LO   = $400E
NOISE_HI   = $400F

OAMDMA     = $4014
APUFLAGS   = $4015

CTRL_SHIFT = $4016
CTRL_01    = $4016
CTRL_02    = $4017

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CONTROLLER_RIGHT  = %00000001
CONTROLLER_LEFT   = %00000010
CONTROLLER_DOWN   = %00000100
CONTROLLER_UP     = %00001000
CONTROLLER_START  = %00010000
CONTROLLER_SELECT = %00100000
CONTROLLER_B      = %01000000
CONTROLLER_A      = %10000000

CONTROLLER_START_SELECT = CONTROLLER_START ^ CONTROLLER_SELECT