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固件数据定义! j: [3 {8 S0 M2 V
Bytes 0-3: PCI subsystem vendor and subsystem device ID (Thisiswhat allows the driver to detect the brand/model of the card -the main PCI vendor and device ID are fixed and identify the card as an ICE1724 device.)
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Byte 4: Size of EEPROM data
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( T1 Y( W# x% v) C% y& i; E$ WByte 5: EEPROM version (seems to be supposed to be1 for ICE1712 (Envy24) and 2 forICE1724 (Envy24HT), but seems like it's usually set to 1even on Envy24HT..)! m/ k5 W/ c7 A! M. ?
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Byte 6: System configuration byte - gets written to the corresponding card register by the driver. Controls clock crystal configuration, MPU-401 MIDI UART, how many ADCs/DACs are connected.
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) k$ _0 `6 U4 d% C' j/ ~Byte 7: ACLink configuration byte - gets written to the corresponding card register by the driver. Controls the connection to the AC97 codec (i.e. the VT1616 used for the front, rear, center/LFE outputs).0 R+ ]8 Q& O) A% ]3 W& P: g
& ?% S _: g% a, ]' i# _; JByte 8: I2S configuration byte - gets written to the corresponding card register by the driver. Controls the connection to the I2S codec (i.e. presumably the Wolfson codec for the high sample rate output).1 i, \6 Z8 B! S7 ]
; ^1 d* R/ L7 v7 h. ^8 FByte 9: SPDIF configuration byte - gets written tothecorresponding card register by the driver. Controls the SPDIF transmitter.
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Byte 10: GPIO Direction! ^- t8 I7 C O3 b7 N% [# R
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Byte 11: GPIO Direction 1: B5 d" O$ v; e5 a4 v5 A Q
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Byte 12: GPIO Direction 25 P& R) [4 N& E' j: X: f/ P
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Byte 13: GPIO Mask
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Byte 14: GPIO Mask 11 d1 W0 Z* M. o/ C( H4 D
( U% a% p$ I6 _Byte 15: GPIO Mask 2) b) [" N% r8 p; ^( V
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Byte 16: GPIO State
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Byte 17: GPIO State 1
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Byte 18: GPIO State 2
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) S7 Q7 N/ H4 H9 B:shifty: 希望广大高手,,继续补充 |
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