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Re: If you could design a $300 homecomputer today, what would you choose?

Subject: Re: If you could design a $300 homecomputer today, what would you choose?
From: pausch@saaf.se (Paul Schlyter)
Date: 18 Jul 2001 15:12:08 +0200
Newsgroups: comp.sys.amiga.advocacy, comp.sys.amstrad.8bit, comp.sys.apple2, comp.sys.atari.8bit, comp.sys.atari.advocacy, comp.sys.atari.st, comp.sys.cbm, comp.sys.sinclair
Organization: Svensk Amat|rAstronomisk F|rening (SAAF)
References: <9ikva3$ple$1@nereid.worldonline.nl> <3B537CB9.D08CB935@inebraska.com> <teL47.18818$JN6.3800443@ne <tas-699F55.15411517072001@news>
Xref: archiver1.google.com comp.sys.amiga.advocacy:21834 comp.sys.amstrad.8bit:3770 comp.sys.apple2:10965 comp.sys.atari.8bit:7023 comp.sys.atari.advocacy:650 comp.sys.atari.st:14198 comp.sys.cbm:18560 comp.sys.sinclair:45306

In article <tas-699F55.15411517072001@news>,
Timothy A. Seufert <tas@mindspring.com> wrote:

> "8-bit legacy of the 286"?  The 286 was a 16-bit CPU.

.... designed to be backwards compatible to the 8088/8088, which were
designed to be partially backwards compatible to the 8-bit CPU's
8080/8008 (the x86 isn't binary compatible, but the CPU registers
of the 8086/88/286 have a striking resemblance to the CPU registers
of the 8080/8008 !!!)

> So were the 8086 and 8088.  The 8088 had an 8-bit wide data bus for
> reduced system costs compared to the 8086, but the instruction sets
> were identical and both were legitimately 16-bit CPUs.  Address space
> was 20 bits (1MB); the 16-bit segment number is shifted to the left 4
> bits and then added to the 16-bit offset to form an address.

The address space of the 286 was 24 bit, although those 16 MB of
memory was addressable only in protected mode -- in real mode, the
286 could address 1 MB + 64 KB.

-- 
----------------------------------------------------------------
Paul Schlyter,  Swedish Amateur Astronomer's Society (SAAF)
Grev Turegatan 40,  S-114 38 Stockholm,  SWEDEN
e-mail:  pausch at saaf dot se   or    paul.schlyter at ausys dot se
WWW:     http://hotel04.ausys.se/pausch    http://welcome.to/pausch

Follow-Ups:
- Re: If you could design a $300 homecomputer today, what would you choose?
  - From: Roy Miller <millers@iliveinnebraska.com>

References:
- If you could design a $300 homecomputer today, what would you choose?
  - From: "T.J.T van Kooten" <thomas@-nospam-worldonline.nl>
- Re: If you could design a $300 homecomputer today, what would you choose?
  - From: Roy Miller <millers@inebraska.com>

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