On Mon, 15 Dec 2008 22:19:42 -0500, "Bob Campbell" wrote:

"Peter Hucker" wrote in message
news
DOS simply loads TSRs, it doesn't 'manage' them.

Then what gives each program time on the CPU?

DOS is single-tasking. In DOS, there is only ever one program at a time
executing. The currently executing program "owns" the machine. There is
no "executive", there is no time slicing of CPU time.

I fell in love with DesqViewX. It was among the first for the early
x86 architectures to slice things up well.

Snipped other good multitasking info.