On 10/7/2010 8:51 PM, Mark Lloyd wrote:
On Wed, 06 Oct 2010 22:59:00 -0500, The Daring Dufas wrote:

[snip]

In the last few years I have actually had to service some systems still
running DOS 6.22. It's a good thing I hang onto old computers so I have
parts to fix the ancient machines. The new machines won't run DOS or the
old peripherals, different interrupts and such.

My newest PC (CPU is "AMD Athlon(tm) II X3 435" triple core) will boot
and run DOS OK.


My 3ghz dual core Intel will boot and run DOS also but it wont run some
of the old applications like certain POS software and games. There are
differences between the bus architecture and timing for the ISA/XT,
ISA/AT, AGP, PCI, PCI-X, etc, etc. To repeat a cliche, I've been there
done that. Many folks out there are running old DOS programs because the
software just works and does what it's supposed to do. Heck, if I
remember correctly, at one time most of the anytime teller machines were
running OS2. I don't know about now because a while back I read about
some other company taking over development of the software and renaming it.

TDD