ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)4 K9 `' s3 M; q9 O
Bit10:WR_PingPong_EN — R/W. 1 I9 L! R0 D) O3 N+ f Z0 = Disabled. The buffer behaves similar to PIIX4.7 E9 ]+ Z, J$ A# M% r7 q
1 = Enables the write buffer to be used in a split (ping/pong) manner.8 S9 h6 ~9 e: c5 a& u! t: Y/ b
哪位给解释下是什么意思呀,这一位的功能是什么呀?