ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)' N4 Z" g/ D; g* H- q- w G
Bit10:WR_PingPong_EN — R/W. / g+ {4 j# T: s: p; s2 q+ m0 = Disabled. The buffer behaves similar to PIIX4. + Q' _' z$ ^" y4 X F1 = Enables the write buffer to be used in a split (ping/pong) manner. 1 V5 o3 n8 c: ~$ v$ h l6 H1 ?哪位给解释下是什么意思呀,这一位的功能是什么呀?