ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1) , |8 H# c( Z/ F2 Q% MBit10:WR_PingPong_EN — R/W. 5 W! q# X6 T5 N0 = Disabled. The buffer behaves similar to PIIX4. ; t. B; Y7 s0 m" b/ r6 i1 = Enables the write buffer to be used in a split (ping/pong) manner. N, ?/ j! q9 N
哪位给解释下是什么意思呀,这一位的功能是什么呀?