ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)) T$ M' i$ f1 t0 y* W3 {9 Q
Bit10:WR_PingPong_EN — R/W. 7 F5 a {* l9 y. W0 = Disabled. The buffer behaves similar to PIIX4. @7 |3 z/ I- N1 _: H& w# h' O v* u1 = Enables the write buffer to be used in a split (ping/pong) manner.: M- j8 r3 t3 Y/ ~7 P
哪位给解释下是什么意思呀,这一位的功能是什么呀?