ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)5 K, z. i \/ f2 l& y) E7 l( @+ @
Bit10:WR_PingPong_EN — R/W.& X( Q: V. t F/ y4 e- t$ |' ~
0 = Disabled. The buffer behaves similar to PIIX4.) Z# c2 A4 r4 z0 B
1 = Enables the write buffer to be used in a split (ping/pong) manner. 6 E+ `' ^( w5 A2 `% s b哪位给解释下是什么意思呀,这一位的功能是什么呀?