Husky MP2500 Manual page 189

However, there are a few minor areas of limited compatibility that might still
affect you:
Compatibility issue
Periodic NMIs
6845 video controller is
emulated
8042 keyboard interface
is emulated
Reserved memory
locations
Split cursor not
supported
"Invisible" character
attribute (00H) not
supported
Non-standard keyboard
layout
Note: Any program written for the FS/2 or FS3 should already handle
these.
Chapter 17: Installing Standard Applications
Comments
NMIs occur periodically including times when
Application software has attempted to disable
all interrupts.
The NMIs can reduce comms throughput
slightly at very high rates.
The only effect you may notice is a slight
reduction in speed.
This is of limited significance since this
interface is only used by the keyboard handler.
Memory from 0B800:4000 to 0B800:7FFF
must not be written to.
H are not aware of any applications that
USKY
use this feature.
H are not aware of any applications that
USKY
use this feature.
The keyboard is configurable and provided
with its own utility for configuring the keyboard
for different countries (I.EXE - see Part 2).
Do not use the MSDOS standard utility KEYB.
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