On Wed, Jan 13, 2016 at 11:29 PM, Murray McCullough <
c.murray.mccullough at gmail.com> wrote:
I was reading in a dated magazine article on the
"freedom to build(a
PC)": Well you can't build phone; can't build a car; can't build a
refrigerator; can't build a TV. Do we have the freedom to build a
computer? We did in the earliest days of the PC- the 8-bit era. Heck,
that's all one could do! It was limited and is to this day. AMD vs
INTEL control what we can do. Has anything really changed?
I'd say that we still have the freedom to build a computer; in fact, it's
probably easier than it ever was. True, it may not be feasible to build
a high-performance computer based on current generation x86 chips,
but there are so many alternatives: some of the 8-bit favourites are still
being made (6502, z80); then there's the AVR, PIC, TI 430, the Propeller,
various ARM chips.
There are free or low-cost CAD packages, and having small series of PCBs
made is almost ridiculously cheap. You can get logic analyzers for $150 or
so, and if you want to experiment with FPGAs, you can get useful
development systems for well below $100.