From wiki.gp2x.org
| Address
|
| Size
| R/W
| Reset Value
| Init Value
| Run Value
| Values written by 940
| Comments
|
| C000
| 4000
| 16-bit
| r/w
| 0
| 0
| 0
| $1420
| status seems to be in bit 0
|
| C000
| 4002
| 16-bit
| w
| 0
| 1
| 1
| $0
|
|
| C000
| 4004
| 16-bit
| w
| 1
| 0
| 0
| $0
|
|
| C000
| 4006
| 16-bit
| r
| 0
| e13
| e13
|
|
|
|
|
|
|
|
|
|
|
|
|
| C000
| 4020
| 16-bit
| w
| 0
| 0
| 2F0
| $110
| Macroblock params?
|
| C000
| 4022
| 16-bit
| w
| 0
| 0
| 0
| $0
|
|
| C000
| 4024
| 16-bit
| w
| 5828
| 0
| 0
| $0
| Something really weird happens with these two registers
|
| C000
| 4026
| 16-bit
| w
| 0
| 0
| 0
| $5,$A,$10,$61,$E0,$160,$264 …
| Something really weird happens with these two registers, possibly a FIFO
|
|
|
|
|
|
|
|
|
|
|
| C000
| 404E
| 16-bit
| rw
| 0
| 0
| 0
| ?
| 404e and 4050 are written together
|
| C000
| 4050
| 16-bit
| w
| 0
| 0
| 0
| ?
| 404e and 4050 are written together
|
|
|
|
|
|
|
|
|
|
|
| C000
| 4082
| 16-bit
| w
| 0
| 0
| 0
| $400
|
|
| C000
| 4084
| 16-bit
| w
| 1008
| 1008
| 1008
| $d
|
|
| C000
| 4086
| 16-bit
| w
| 0
| 0
| 0
| $4000
|
|
| C000
| 4088
| 16-bit
| w
| 88
| 88
| 88
| $10
|
|
|
|
|
|
|
|
|
|
|
|
| C000
| 408C
| 16-bit
| w
| 0
| 220
| 220
| ?
| High 16-bit bits for quantizer matrix data save?
|
| C000
| 408E
| 16-bit
| w
| 0
| 0
| 0
| ?
| Low 16-bits
|
|
|
|
|
|
|
|
|
|
|
| C000
| 4096
| 16-bit
| w
| 0
| 0
| 228
| ?
| High 16-bit bits of RL buffer
|
| C000
| 4098
| 16-bit
| w
| 0
| 0
| 0
| ?
| Low 16-bits of RL buffer
|
|
|
|
|
|
|
|
|
|
|
| C000
| 409A
| 16-bit
| w
| 0
| 230
| 230
| ?
| High 16-bits for mpeg4 h/w blocks line buffer
|
| C000
| 409C
| 16-bit
| w
| 0
| 0
| 0
| $F
| Low 16-bits
|
|
|
|
|
|
|
|
|
|
|
| C000
| 4120
| 16-bit
| w
| c2
| c2
| cc2
|
|
|
|
|
|
|
|
|
|
|
|
|
| C000
| 4124
| 16-bit
| w
| 0
| 0
| 240
| $180
| Luma offset
|
| C000
| 4126
| 16-bit
| w
| 0
| 0
| 244
| $188
| CB Offset
|
| C000
| 4128
| 16-bit
| w
| 0
| 0
| 246
| $18C
| CR Offset
|
|
|
|
|
|
|
|
|
|
|
| C000
| 4144
| 16-bit
| rw
| 40
| 40
| 40
| $1B0
| 4144, 4146 and 4148 are swapped with 4124, 4126 and 4128
|
| C000
| 4146
| 16-bit
| rw
| 50
| 50
| 50
| $1B8
| maybe some kind of double buffering?
|
| C000
| 4148
| 16-bit
| rw
| 60
| 60
| 60
| $1BC
|
|
|
|
|
|
|
|
|
|
|
|
| C000
| 414A
| 16-bit
| w
| 70
| 70
| 70
|
| these three are written together
|
| C000
| 414C
| 16-bit
| w
| 80
| 80
| 80
|
| these three are written together
|
| C000
| 414E
| 16-bit
| w
| 90
| 90
| 90
|
| these three are written together
|
|
|
|
|
|
|
|
|
|
|
| C000
| 4154
| 16-bit
| w
| 32
| 32
| 32
|
|
|
| C000
| 4156
| 16-bit
| w
| 0
| 0
| 0
| $0
|
|
| C000
| 4158
| 16-bit
| w
| 0
| 0
| 0
|
| Something really weird happens with these two registers
|
| C000
| 415A
| 16-bit
| w
| 0
| 0
| 0
|
| Something really weird happens with these two registers
|
