ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)) H" m4 A# Q- H7 f( P
Bit10:WR_PingPong_EN — R/W. 4 ?2 @& c v5 [9 I6 ?0 = Disabled. The buffer behaves similar to PIIX4.9 d: p+ G. j4 K
1 = Enables the write buffer to be used in a split (ping/pong) manner. 5 \+ c: Y+ o& b# j1 t哪位给解释下是什么意思呀,这一位的功能是什么呀?