ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1) % |, v1 u8 b8 YBit10:WR_PingPong_EN — R/W.7 H: n' U4 k! A' {; p5 n0 ]
0 = Disabled. The buffer behaves similar to PIIX4.0 v7 z& s: I. y- i0 A" b/ n H
1 = Enables the write buffer to be used in a split (ping/pong) manner.1 j8 _+ C; s2 s E3 O$ E3 M S
哪位给解释下是什么意思呀,这一位的功能是什么呀?