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ICH4的spec中有个IDE_CONFIG—IDE I/O Configuration Register(IDE—D31:F1)2 B, D" v% o7 w, ?+ K" w1 J
Bit10:WR_PingPong_EN — R/W.9 ^; o3 K0 U# U. p
0 = Disabled. The buffer behaves similar to PIIX4.# A+ M5 a2 w, x H
1 = Enables the write buffer to be used in a split (ping/pong) manner.
1 c# Q7 M) o7 p# p* G哪位给解释下是什么意思呀,这一位的功能是什么呀? |
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