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Re: Z80 Wearable

From: "Dale Schoeck" <>
Date: Tue, 3 Mar 1998 22:21:20 -0600

Actually, 4 mhz is quite reasonable if the files are  kept small and needs
are modest, and there are minimal to no networking needs.  I remember using
a Commodore 64 for a few years with a 6502 running at 1 mhz., and, while it
was slow with GUI installed, the access speed on the floppy was the main
bottleneck.  If you start adding lots of colors display and networking,
then things get slow fast... and multitasking, while possible, slows things
as well.  How much processor power does it really take to do word
processing, balance a checkbook, keep a to-do list and calendar, and check
Email?

Hardware is pretty tightly integrated on these little machines (8-bit
computers) and the software is written to directly access that hardware
wwithout all the layers present on most "modern" operating systems.

I've often wished for the tools/skill/knowledge to hack my Sega Genesis
CDX.  Portable, Video (composite) out, dedicated stereo sound out, CD
Player, and a 65816 16-bit processor (same as used in the Apple II-GS). Can
handle multiple input devices, like mouse, lightpen, and various others. 
There is a (proprietary) modem.  ROM cartridges for no-power software
storage.  And it runs on 4 AA batteries.  No standard I/O or programming
tools, though. Everything is proprietary.  Too hard to find the necessary
info.  Still, these little game machines are true computers... and the
potential is there.

Dale

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