QDOS
The Sinclair {QL }'s proprietary {operating
system }. The origin of the name is uncertain (a weak pun on
kudos , perhaps , as {Unix } was on {Multics }). There was
another OS around from the birth of personal computers called
Q .D .O .S . - Quick And Dirty Operating System . QDOS might also
stand for QL Data /Disk /Drive /Device Operating System .
QDOS did the usual OS sorts of things , as well as
multitasking . It was unusual in several ways . It treated all
devices (serial ports , mouse ports , screen , {microdrive },
disk drive }, keyboard , etc .) uniformly , so you could print a
text file direct to disk or save a binary to the screen for
example .
Also logical channels could be assigned to particular physical
devices . Output directed to a channel would go to the
appropriate in /output . This also meant you could have many
windows on screen (the QL booted up from internal ROMs with 3
windows - command line , output and program listing ) all
independent to some extent . Channels could be redirected
without affecting the way the process sent or received the
data .
1996 -07 -22 )
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