ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1); ]6 l' O3 k* l. d
Bit10:WR_PingPong_EN — R/W.( I2 ^1 w3 }0 V
0 = Disabled. The buffer behaves similar to PIIX4.9 L( O- ^0 @+ Z. Y
1 = Enables the write buffer to be used in a split (ping/pong) manner. 7 |" K+ O% u! O- ~; f2 V% D) N& k哪位给解释下是什么意思呀,这一位的功能是什么呀?