ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)2 x: K' b( C: `% z
Bit10:WR_PingPong_EN — R/W.$ k# Z4 _9 A9 N
0 = Disabled. The buffer behaves similar to PIIX4. # X; r$ [9 z" l1 C1 = Enables the write buffer to be used in a split (ping/pong) manner.; B; A8 p$ e0 s* \+ b, J
哪位给解释下是什么意思呀,这一位的功能是什么呀?