16 Jun
2015
16 Jun
'15
9:14 a.m.
On 6/16/2015 8:56 AM, Paul Koning wrote:
There is *NO* computer in my MICROWAVE!
I have the good kind! ( I need to fix the the defrost and half power
settings someday). Timer dings when food is cooked.
On Jun 16, 2015, at 2:49 AM, ben <bfranchuk at
jetnet.ab.ca> wrote:
If you?re looking at 1960s designs, you should be fine even if the
machine had wider words. By the standards of that era, any modern
computer (probably including the one in your microwave oven) is
*large*. For example, the THE OS memory footprint is about 16k words
(48k bytes), and that includes not just what we think of as a kernel
but also all the device drivers and a bunch of language support
library code. Other designs from that era are smaller still. ...
Since the computer I designed is a *small* computer, 8 & 16 bit
operating systems is what I am looking at for ideas. This is a 18
bit cpu with the concept, byte access of memory needs true 18 bit
addressing and 16 bits is bit small for general 1970's data. Think
of it as a something like a 9 bit 6800 cpu. paul
16K words seems right, for that era as core
was swapped in and
out to run system and program threads. Since TIME SHARING was the
big development feature of that era, I am ignoring most main frame
operating systems. Single user with small memory and disk I/O as
similar to the mid 1970's is my goal.
But this is all I have to say, as I want stick to real hardware on this
list.
Ben.