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Date: Thu, 26 Apr 2001 00:57:33 +0900
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From: SAKIYAMA Nobuo <sakichan@sakichan.org>
To: FreeBSD-tech-jp@jp.freebsd.org
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At Wed, 25 Apr 2001 13:55:37 +0900,
Seigo Tanimura wrote:

> $B8e<T$G$9!#$h$/(BIA32$B$H$$$o$l$k%d%D$G$9!#(B

$BB?J,!"(Bcurrent $B$NJ8L.$@$C$?$i(B 386 $B$H(B 486$B0J9_$r40A4$KJ,$1$F9M$($F$+$($F(B
$B$$$/$[$&$,9,$;EY$O9b$$$H;W$$$^$9!#(B

> npx exception$B$r(Btrap()$B$GJa$^$($k$KEv$?$C$F:G8e$K:$$k$N$O!"$?$C$?(B1$B2s$G$O$"(B
> $B$j$^$9$,(BI/O port(0xf0)$B$rC!$+$J$1$l$P$J$i$J$$$3$H$G$9!#(B

$B$3$l$b!"$*$=$i$/8m$j$G$9!#(B

http://developer.intel.com/design/intarch/techinfo/pentium/fpuhandl.htm
http://developer.intel.com/design/intarch/techinfo/pentium/fpu.htm

$B$"$?$j$r?.$:$k$N$G$"$l$P!"(Boutb(xf0)$B$O(B (Intel$BMQ8l$G$N(B)MS-DOS$B8_49%b!<%I(B
$B$G3d$j9~$_$r;H$C$?Nc30=hM}$r$9$k>l9g$K!"(BFPU exception $B$rM^;_$9$k$?$a$K(B
$B;H$o$l$^$9!#(B486 $B0J>e$G(B native mode $B$H7h$a$&$C$?(B exception handling$B$r$9(B
$B$k$N$G$"$l$P!"A4$/ITMW$G$9!#(B
 
> $B$3$NLdBj$KD94|E*$K%+%?$,$D$/$h$&$G$"$l$P!"(Bnpx$B$r??$K(Btrap$B$H$7$F07$&$h$&$J(B
> $B2~NI$r(B-arch$B$KEj$2$F$_$F$b$h$$$N$G$O$J$$$G$7$g$&$+!#$3$3$^$GMh$l$P2?$+FM$C(B
> $B9~$^$l$F$bH?7b$G$-$k$O$:$J$N$G!#(B

$B$^$!!"(B80386 $B$@$1$r40A4$K@Z$jJ,$1$F$b$=$3$G1x$$ItJ,$,;D$C$A$c$C$FB>$K1F(B
$B6A$,;D$k$s$G$7$g$&$+$i!":G=*E*$K$O(B 80386 $B@Z<N$F$H$$$&J}8~$K$J$i$J$$$H(B
$B40A4$J2r7h$OFq$7$$$H;W$$$^$9!#$?$@!"(B80386 $B$@$1FCJL07$$$@$C$?$i!"5U$K(B
80386$B8GM-$N3d$j9~$_%k!<%A%s$G(B exception $B$,5/$-$?>uBV$r(Bemulation $B$9$k$H(B
$B$$$&<j$O$"$k$+$b(B($B$3$l$O3N$?$k8+9~$_$,$J$/8@$C$F$^$9(B)$B!#(B
-- 
SAKIYAMA Nobuo ($B:j;3(B $B?-IW(B)  sakichan@sakichan.org
