25 Jan
2016
25 Jan
'16
10 p.m.
Johnny Billquist scripsit:
the desktop models are called MS800A, MS800B, MS880A
and MS880B.
Good to know.
Reading through it, it's very clear that this is
not OS/8, or any
derivative of it.
You're right. What it did share, however, was the OS/8 file system,
except that the date epoch was 1972 instead of 1970. I don't know if
COS survived long enough to use extended dates.
the transfer program
available to transfer files to/from OS/8.
That didn't actually transfer files, which wasn't necessary; IIRC,
it converted between the COS-310 format for text files (about which
I know nothing) and the OS/8 format (three 8-bit bytes in two 12-bit words,
packed with the first two bytes in the low order bits of the words,
and the third byte split between the four high order bits).
The EDUsystems were in fact having numbers
like 10, 20, 25, 30, 40 and 50. No 310 or anything close...
That's what I remember. My first PDP-8 was running EDU30 on top of
OS/8.
But EDUsystems do not really predate the 8/A. They
carried on in the
PDP-11 systems as well, beyond the 8/A era.
Sure. What I mean is that the EDUsystems began before the 8/A, not that
they ended before it.
--
John Cowan http://www.ccil.org/~cowan cowan(a)ccil.org
Why are well-meaning Westerners so concerned that the opening of a
Colonel Sanders in Beijing means the end of Chinese culture? [...]
We have had Chinese restaurants in America for over a century,
and it hasn't made us Chinese. On the contrary, we obliged the Chinese
to invent chop suey. --Marshall Sahlins