ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)# g: L4 }) q+ H3 Z
Bit10:WR_PingPong_EN — R/W.' R/ X6 S* `0 b- i) ?
0 = Disabled. The buffer behaves similar to PIIX4.2 K7 ?- n! ~0 f; a* o1 n
1 = Enables the write buffer to be used in a split (ping/pong) manner.' `6 L) W8 F% ?( u1 p
哪位给解释下是什么意思呀,这一位的功能是什么呀?