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Old 09-15-2009, 05:56 AM   #1
jchuang1977
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Tear down the Prs-300

CPU is mc9328mxl , 200MHZ.



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Old 09-15-2009, 07:09 AM   #2
igorsk
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Just like I thought, the same as in PRS-505.
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Old 09-15-2009, 08:04 AM   #3
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There's almost an erotic appeal in looking at that photo that I find very exciting.

OP: I wonder how many millions of transistors this circuit has. I was explaining to my IB students the other day about an entire room/floor dedicated to a computer that used thousands of vacuum tubes to get it working, back in the '40s/'50s, and trying to get them to imagine their MP3 player that size.

I find electronics always to be very exciting to me. I remember building my first shortwave radio (a Heathkit), and loving every moment. That experience was better than my first marriage - and I'm not joking.

Thanks for the image!


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Old 09-15-2009, 08:21 AM   #4
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I wonder what kind of micro-art the engineers might hid on those chips?
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Old 09-15-2009, 04:42 PM   #5
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Quote:
Originally Posted by igorsk View Post
Just like I thought, the same as in PRS-505.
If its the same as in the 505, does anyone know what other component it would be that makes the 300 slower than the 505 as it seems be judging from any review that mentions it.
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Old 09-15-2009, 06:17 PM   #6
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I wouldn't count on reviewer's impression unless he tested it several times in the same conditions.
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Old 09-15-2009, 07:31 PM   #7
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Also, what does it have for memory. If that is slower, it'll slow the entire system down.

Plus software can have a big impact.
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Old 09-15-2009, 07:45 PM   #8
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Interesting how everything is marked china or korea now, no more made in japan stamped over the chips in these things...
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