VSYNC  = $00
VBLANK = $01
WSYNC  = $02
RSYNC  = $03
NUSIZ0 = $04
NUSIZ1 = $05
COLUP0 = $06
COLUP1 = $07
COLUPF = $08
COLUBK = $09
CTRLPF = $0A
REFP0  = $0B
REFP1  = $0C
PF0    = $0D
PF1    = $0E
PF2    = $0F
RESP0  = $10
POSH2  = $11
RESP1  = $11
RESM0  = $12
RESM1  = $13
RESBL  = $14
AUDC0  = $15
AUDC1  = $16
AUDF0  = $17
AUDF1  = $18
AUDV0  = $19
AUDV1  = $1A
GRP0   = $1B
GRP1   = $1C
ENAM0  = $1D
ENAM1  = $1E
ENABL  = $1F
HMP0   = $20
HMP1   = $21
HMM0   = $22
HMM1   = $23
HMBL   = $24
VDELP0 = $25
VDELP1 = $26
VDELBL = $27
RESMP0 = $28
RESMP1 = $29
HMOVE  = $2A
HMCLR  = $2B
CXCLR  = $2C

CXM0P  = $30
CXM1P  = $31
CXP0FB = $32
CXP1FB = $33
CXM0FB = $34
CXM1FB = $35
CXBLPF = $36
CXPPMM = $37
INPT0  = $38
INPT1  = $39
INPT2  = $3A
INPT3  = $3B
INPT4  = $3C
INPT5  = $3D

SWCHA  = $280
SWACNT = $281
SWCHB  = $282
SWBCNT = $283
INTIM  = $284
TIM1T  = $294
TIM8T  = $295
TIM64T = $296
T1024T = $297