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ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)
/ k) P3 c5 S% {, V$ C& ^8 _& e+ Z. mBit10:WR_PingPong_EN — R/W.; v( z' U0 O V- M7 g
0 = Disabled. The buffer behaves similar to PIIX4.& o" M @1 _& P, b7 i* v
1 = Enables the write buffer to be used in a split (ping/pong) manner.
( [' F- `, ]; B/ T- Q( O哪位给解释下是什么意思呀,这一位的功能是什么呀? |
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