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Date: Thu, 30 Aug 2001 00:28:36 +0900
From: Katsurajima Naoto <raven@katsurajima.seya.yokohama.jp>
To: FreeBSD-tech-jp@jp.freebsd.org
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Subject: [FreeBSD-tech-jp 3161] Re: DMA max size on FreeBSD I386
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$B7KEg!w2#IM$G$9(B.

> $B!!(BAT$B$N:"$N(BDMA$B%3%s%H%m!<%iMQ%P%C%U%!$G$O%V%m%C%/%5%$%:$,(B64KB$B$@$C$?$H;W$$(B
$B$^(B
> $B$9!#(B
> $B!!:#8=:_$N%*%s%\!<%I(BDMA$B%3%s%H%m!<%i$G$"$l$P(B16MB$B0J2<$N6u4V$G$"$l$P(B
> $B!!7k9=;H$($?$H;W$$$^$9!#(B

$B$J$k$[$I(B, $B3N$+$K%G%P%$%9B&$N(BDMA$B6u4V$O(B256MB$B$^$G%5%]!<%H$5$l$F$$$k$h$&$J$N$G(B
$B$9$,(B, bus_dma*()$B4X?t$G$O$I$&$J$N$+$H;W$C$F<ALd$7$F$_$^$7$?(B.

/usr/src/sys/i386/include/bus_at386.h$B$J$I$G$O(BBUS_SPACE_MAXSIZE$B$NCM$,(B
64kByte$B$HDj5A$5$l$F$$$k$_$?$$$G$9$7(B, /usr/src/sys/i386/i386/busdma_machdep.c
$B$"$?$j$rFI$s$G$b$h$/J,$+$i$J$+$C$?$N$G$9$,(B, $B$H$j$"$($:(B640kByte$B$[$I3NJ]$7$F(B
$B;n$7$F$_$k$3$H$K$7$^$9(B.
-- 
Katsurajima "Raven" Naoto($B7KEg(B $BD>?M(B)
Family Emblem: Circle and Left 3 Clove-TOMOE($B4]$K:8;0$DCz;RGC(B)
e-mail: raven@katsurajima.seya.yokohama.jp
