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? Rich Rich Alderson Vintage Computing Sr. Systems Engineer Living Computer Museum 2245 1st Avenue S Seattle, WA 98134 mailto:ri...@livingcomputermuseum.org http://www.LivingComputerMuseum.org/