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Date: Fri, 13 Feb 1998 18:09:33 +0900 (JST)
From: Noriyuki Soda <soda@sra.co.jp>
Message-Id: <199802130909.SAA21049@srapc342.sra.co.jp>
To: FreeBSD-users-jp@jp.freebsd.org
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X-Distribute: distribute [version 2.1 (Alpha) patchlevel=24]
X-Sequence: FreeBSD-users-jp 24567
Subject: [FreeBSD-users-jp 24567] Re: [Q]Bounce Buffer
Errors-To: owner-FreeBSD-users-jp@jp.freebsd.org
Sender: owner-FreeBSD-users-jp@jp.freebsd.org

> $B$H$3$m$,!"%^%6!<%\!<%I>e$N(B DMA $B4XO"$N%O!<%I%&%'%"$O!"AjJQ$o$i$:(B ISA 
> $B%P%9$N8B3&$G$"$k!"(B24 $B%S%C%H!&%"%I%l%9$r%5%]!<%H$9$k$KN1$^$C$F$$$^$7(B
> $B$?!#$3$NCJ3,$G!"(BDMA $B5!G=$,Ek:\$9$kA4$F$N%a%b%jHO0O$G;H$($J$/$J$k;vBV(B
> $B$H$J$C$?$o$1$G$9!#$=$3$G!"%P%&%s%9!&%P%C%U%!$N%7%9%F%`$,EP>l$9$k$3$H(B
> $B$K$J$k$s$G$9$M!#(B

bus master $B%?%$%W$N(B ISA SCSI $B%+!<%I$O!"%^%6!<%\!<%I>e$N(B DMA $B%O!<%I%&%'(B
$B%"$G$O$J$/!"(BSCSI $B%+!<%I<+?H$,;}$D%O!<%I%&%'%"$r;H$C$F!"(BDMA $B$r9T$C$F$$(B
$B$^$9!#(BISA $B%P%9$K$O!"$=$b$=$b(B 24 $B%S%C%H$7$+%"%I%l%9!&%i%$%s$,$"$j$^$;$s(B
$B$+$i!"(Bbus master $B%?%$%W$N(B ISA SCSI $B%+!<%I$O!"(B16MB $B0J>e$N%a%b%j6u4V$K%"(B
$B%/%;%9$9$k$3$H$,$G$-$^$;$s!#$3$N$?$a!"(BBOUNCE_BUFFER $B$,I,MW$K$J$j$^$9!#(B

$B>e$NJ8>O$N!"!V%^%6!<%\!<%I>e$N(B DMA $B4XO"%O!<%I%&%'%"$O!W$H$$$&I=8=$O!"(B
$B8m2r$r>7$/$H;W$$$^$9!#!J(Bbus master $B%?%$%W$N(B SCSI $B%+!<%I$O!"%^%6!<%\!<(B
$B%I>e$N(B DMA $B%O!<%I%&%'%"$rMxMQ$7$F$J$$$N$G!D!K(B

> $B$3$N8e!"(BEISA $B%P%9!&%7%9%F%`$,8=$l$^$7$?$,!"(BEISA $B%P%9Ek:\$N%^%6!<%\!<%I(B
> $B$O!"@_7WCJ3,$+$i(B 32 $B%S%C%H!&%"%I%l%9BP1~$N(B DMA $B%O!<%I%&%'%"$,Ek:\$5$l(B
> $B$F$$$^$7$?$N$G!">e5-$NLdBj$OH/@8$7$^$;$s$G$7$?!#(B

EISA $B%P%9$G$OLdBj$J$$$H$$$&E@$O@5$7$$$H;W$&$N$G$9$,!"(BEISA $B$N(B bus
master $B7?(B SCSI $B%+!<%I$b!"%^%6!<%\!<%I>e$N(B DMA $B%O!<%I%&%'%"$OMxMQ$7$F$$(B
$B$^$;$s$+$i!"$3$NI=8=$b(B $B$d$O$jLdBj$@$H;W$$$^$9!#(B
$B!V(BEISA $B%P%9$O!"(BISA $B$N$h$&$J%"%I%l%9!&%i%$%s$N@)8B$,$J$$$N$G!"(B
  BOUNCE_BUFFER $B$OITMW$G$9!W$H=q$/J}$,NI$$$H;W$$$^$9!#(B

> $B$5$i$K!"(BVESA VL $B%P%9$H$$$&$3$H$K$J$k$o$1$G$9$,!"%^%6!<%\!<%I>e$N(B DMA 
> $B4XO"%O!<%I$O!"(BISA $B%P%9AjEv$H$$$&$3$H$G!"(BISA $B%P%9!&%7%9%F%`$HF1MM$N@)8B(B
> $B$,H/@8$9$k$3$H$K$J$j$^$9!#(B

VL $B$N(B bus master $B7?(B SCSI $B%+!<%I$b!"%^%6!<%\!<%I>e$N(B DMA $B%O!<%I%&%'%"$O(B
$BMxMQ$7$F$$$^$;$s!#$^$?!"(BVL $B$K$O!"(BISA $B$N$h$&$J%"%I%l%9!&%i%$%s$N@)8B$O(B
$B$"$j$^$;$s$+$i!"(BEISA $B$HF1MM$K(B BOUNCE_BUFFER $B$OITMW$JH&$G$9!#(B
--
soda
