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固件数据定义
: t6 z: H' |# O& P0 ?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.)9 X/ z* m n2 l- }7 u2 R
2 f: L! T- N: v( n+ f
Byte 4: Size of EEPROM data3 W7 f8 n) [7 p9 ^8 W' \# s
; m4 O/ P* J" y* R( t3 {: q. aByte 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..)5 V f; \( I& M
+ ?# z" v) F5 z iByte 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.6 T, w; P' U0 O
+ }/ [9 N* z" q; SByte 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).
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/ p/ }. @: K2 X; B+ l1 {, WByte 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).- x% _# n1 ]! J8 {8 [& H- B! c
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Byte 9: SPDIF configuration byte - gets written tothecorresponding card register by the driver. Controls the SPDIF transmitter.! G) L+ [" M& ^; t% D
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Byte 10: GPIO Direction% t; l2 [5 V9 j9 y/ p8 v4 j
6 N, p& V9 u) @* m- B
Byte 11: GPIO Direction 1
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2 n3 O, l0 R6 J6 H% a( P" ^% F7 Z0 AByte 12: GPIO Direction 2& [9 d, ^3 v* z) S0 Y9 R
0 @3 L( P- {+ t- P% q: PByte 13: GPIO Mask
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# k i2 H- ?! `& }. W' s# b* PByte 14: GPIO Mask 1
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Byte 15: GPIO Mask 2
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Byte 16: GPIO State
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Byte 17: GPIO State 1+ f; J% T/ r6 V+ h2 e& h
" p% V1 L# F; h( y$ JByte 18: GPIO State 2
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4 s- j" ~8 @7 x7 h2 e:shifty: 希望广大高手,,继续补充 |
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