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- From: billn@hpcvaac.cv.hp.com (bill nelson)
- Subject: Re: CDs cheaper to make than cassettes?
- Message-ID: <1992Nov18.202016.24690@hpcvaac.cv.hp.com>
- Organization: Hewlett-Packard Company, Corvallis, Oregon USA
- References: <1992Nov18.125102.25706@news.columbia.edu>
- Date: Wed, 18 Nov 1992 20:20:16 GMT
- Lines: 15
-
- lasner@watsun.cc.columbia.edu (Charles Lasner) writes:
- :
- : designs (note, most of the cheap 386SX designs *solder* the CPU chip in!),
- : but also in that Kingston board for use in upgrading a 286 machine to a
- : 486 albeit only 16 megs of memory maximum. (This 16-bit 486SX chip,
- : the 386SX, and the 80286 all have the 16-meg limit due to the 16-bit memory
- : buss.)
-
- Why is it due to the buss? You can only directly select 64K locations with
- a 16 bit word. Multiply that by 8 bits (for 8 bit words) and you come up
- to less than 1/2 meg as the direct limit. Of course, by indirect addressing,
- you could address 64,000 pages of about 1/2 meg each or about 32000Meg of
- memory.
-
- Bill
-