Hi,
I am trying to replace some ancient hardware hosting a
single DOS 6 proprietary application. The application
has some custom hardware which emulates an AT
keyboard for button presses. When I hook this keyboard
to a Win XP machine, it works fine in XP (e.g. to notepad
or a command prompt). When I run MS-DOS 6.0 which I
installed in dosbox 0.74 running on the same XP machine,
a single press of a key results in a continuous stream of
the same character sent to the DOS 6 prompt until I press
a different key, at which point I get a continuous stream
of the new character. (1 character, a slight pause, then
continuous more of the same - typematic style)
If I click away from the Dosbox window
and activate a different XP window the keyboard again
works properly.

Somehow XP sees the single key press correctly, but
when passed to dosbox, it is seen as being held down.

Additional info: it works correctly in bochs, and in
VirtualBox, but has the repeat problem in VirtualPC 2007.

Any ideas?
Thanks,
Tom