[TUHS] SUN (Stanford University Network) was PC Unix
robert at timetraveller.org
Thu Apr 15 15:01:01 AEST 2021
On Sat, 10 Apr 2021, Dave Horsfall wrote:
> On Fri, 9 Apr 2021, Paul Ruizendaal via TUHS wrote:
>> Z80 CP/M machines were still competitive in 1981-1983 (Osborne, Kaypro)
> And the Aussie Microbee... Wonderful machine, and easily hacked upon.
> For example, you could expand the memory by soldering several chips on top of
> each other and addressing the CS* line via bank-switching.
That worked on the old Radio Shack (Tandy) Color Computer 2 as well.
Until this moment I didn't know it had been demonstrated on any other
The Operating System OS-9 Level One would detect this and use the
bank-switched memory if it was available. Presumably it kept identical
copies of itself in each bank as the entire address space switched.
Microware OS-9 was *nix-like in look and feel although it was very
different internally I think. OS-9 still exists today.
I started with OS-9 and so found Unix a comfortable environment when I
 Which should not be confused with any operating system running on a
Mac. That's another story.
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