Paul M Foster wrote:
>
> Please excuse my ignorance. I haven't followed hardware much in the last
> few years.
>
> My P133 machine will take 256M in 72 pin SIMMs, or up to 128 in a single
> DIMM (168 pin SDRAM package). Here's the problem. I have the manual for
> the motherboard, but it doesn't tell me what speeds of memory it will
> take. Memory costing what it does right now, I'd like to remove my SIMMs
> and replace them with a 128M DIMM. But I don't know what speed to use.
> The motherboard supports 60ns or 70ns SIMM modules, but I can't figure
> out what speed DIMMs it will support. Does anyone know a way to tell
> this from the data I've given? What other data might be needed?
Buy the cheapest. A P133 isn't going to "need" anything faster than
60ns or 70ns or so. The "speed" of RAM is just the _fastest_ rate at
which the chips can be refreshed. They'll always work at slower refresh
speeds.
--
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#!/usr/bin/perl -w
$_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map
{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;
$t^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z)
[$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h=5;$_=unxb24,join
"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d=
unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*
8^$q<<6))<<9,$_=$t[$_]^(($h>>=8)+=$f+(~$g&$t))for@a[128..$#a]}
print+x"C*",@a}';s/x/pack+/g;eval
usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \
| extract_mpeg2 | mpeg2dec -
http://www.cs.cmu.edu/~dst/DeCSS/Gallery/
http://www.eff.org/ http://www.anti-dmca.org/
http://www.sciencemag.org/cgi/content/full/293/5537/2028
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