"Peter Hucker" wrote in message
news
On Wed, 10 Dec 2008 02:25:05 -0000, flipper wrote:

On Tue, 09 Dec 2008 18:47:00 -0000, "Peter Hucker"
wrote:

On Tue, 09 Dec 2008 07:48:42 -0000, flipper wrote:

On Mon, 8 Dec 2008 19:34:45 -0500, "Tom Del Rosso"
wrote:


"flipper" wrote in message
news On Sun, 07 Dec 2008 23:02:25 +0000, Eeyore
wrote:

Well..... I never recall DOS crashing !

There's a good reason for that. DOS doesn't 'do' much of anything.

Oh, I remember it crashing and freezing, but it was always because of
the
app, not the OS.

As you just said, you remember the *app* crashing and freezing.

DOS was (is) basically a program loader and control of the machine
goes to the app so unless, in it's brain dead stupor as it crashes, it
hands control back to the CLI then that's all she wrote.

What about managing TSRs?

DOS simply loads TSRs, it doesn't 'manage' them.

Then what gives each program time on the CPU?


PHucker claims to be the tech support in a computer firm yet doesn't know
about something as simple and basic as a TSR!

Its a service call that loads into memory and then returns control to the
system as if its quit, it can be triggered at a later time by a specific
event - probably similar to an interrupt handler.