[sebhc] Re: Was there ever a Unix for h-89 ?

Lee Hart leeahart at earthlink.net
Tue Jan 3 19:18:28 CST 2006

bill malcolm wrote:
> I was thinking building Unix for h-89 -- I have source code for
> early Unix from ATT and C also... I was thinking of adding some
> kind of Memory Mangement Hardware...

A lot depends on what you mean by "unix". Today, people think of linux,
which is a gargantuan package, thousands of times too big for an H89.
But decades ago, unix was just another operating system; somewhat larger
than CP/M and HDOS, but still possible to run on a small computer. The
H89 is as capable as many of the minicomputers that ran unix back then.

One thing that helps a lot is to make it a single-user system. There
were a number of companies that made unix-like "shells" for CP/M. This
gives you something that behaves like unix at the command prompt, though
the underlying file system is unchanged.

There were unix-like operating systems like minix and xenix that ran on
Z80 computers. Did these ever get implemented on the H89?
Ring the bells that you can ring
Forget the perfect offering
There is a crack in everything
That's how the light gets in
	-- Leonard Cohen
Lee A. Hart   814 8th Ave N   Sartell MN 56377  
leeahart_ at _earthlink.net

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