ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)4 K. e( I8 s, ^+ g9 t
Bit10:WR_PingPong_EN — R/W. 0 j: O; c0 ]+ R& K& `. t0 = Disabled. The buffer behaves similar to PIIX4.3 Y9 u8 \! f8 r" m# x2 M* M" R4 c
1 = Enables the write buffer to be used in a split (ping/pong) manner., z" f8 X3 r3 u0 I5 P9 L' b D" p
哪位给解释下是什么意思呀,这一位的功能是什么呀?