release dates of early microcomputer operating systems, incl. Intel ISIS

[Paul Koning]

> On Sep 17, 2015, at 7:17 PM, Rich Alderson <RichA at LivingComputerMuseum.org> wrote:
> 
> From: Eric Smith
> Sent: Tuesday, September 15, 2015 12:48 AM
> 
>> On Twitter, @hotelzululima suggested Motorola MIKBUG, introduced in
>> 1974, but IMO it's a monitor, not an operating system.
> 
> So the PDP-6 monitor, which booted from DECtape but had no other dependency
> on that medium, was not an operating system?  It provided multiple timeshared
> jobs, so was not a single-program system.
> 
> TOS/360 was not an operating system?
> 
> Do only disk-oriented operating systems deserve that sobriquet?

Clearly that would be silly.  Not to mention the RT-11 operating system, which could boot and run with just DECtape.  Or the famous THE operating system, which boots from paper tape (though it pages to drum at runtime).

	paul