OS/9 was an incredible operating system for an 8 bit machine. Level 1
was a bit limited. But level II, which could address a megabyte of
memory or more, supported multiple tasks, users and intelligent
peripherals. It supported applications in ROM and RAM and made full use
of all of the advanced capabilities of the 6809 CPU.
It was a little bit of a memory hog because code written for it had to
be written as position independent code. On the 6809 this could take up
more RAM because some of the relative instructions required 16 bits or
more to decode.
On 5/26/2024 5:49 PM, Fred Cisin via cctalk wrote:
"Real OS"? While I don't agree with your specific examples of
inadequacies, I will readily concede that nothing so far is ready
for the title.
On Sun, 26 May 2024, ben via cctalk wrote:
CP/M was the cats meyow in the 1970's,but there was other systems out
like
flex for the 6800, or later OS/9 for the 6809. Don't they get a
chance too for real OS.
OS/9 was kinda cool, but my Cocos were kinda inadequate hardware to
make full use of it.
Randy Cook tried to make a "real OS" for the TRS80. But, he never
FINISHED [nor documented] TRSDOS, nor VTOS. When LSI commissioned
LDOS, as the finishing of TRSDOS/VTOS, they stripped out a lot of the
"real OS" features that Randy Cook had intended, but never finished
implementing.
But, when Radio-shack licensed LDOS, to be TRSDOS 6.0, Randy Cook
finally started to receive royalties.
--
Grumpy Ol' Fred ci...@xenosoft.com
