ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1) + T8 X* ?* A1 P1 m" ~Bit10:WR_PingPong_EN — R/W.8 R8 ~3 L4 }" |. w0 ? n
0 = Disabled. The buffer behaves similar to PIIX4. f. P$ q. k6 W# |4 r1 = Enables the write buffer to be used in a split (ping/pong) manner.5 `7 Q" x2 v" t0 W. f/ g
哪位给解释下是什么意思呀,这一位的功能是什么呀?