ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)" f# }- U) \3 a* g3 V1 s! b
Bit10:WR_PingPong_EN — R/W.* S7 K' |0 H _6 [
0 = Disabled. The buffer behaves similar to PIIX4. - C9 Z3 I# G+ l) G' V! y5 G1 = Enables the write buffer to be used in a split (ping/pong) manner. ! n% k. {) r& [: i! @哪位给解释下是什么意思呀,这一位的功能是什么呀?