GENERAL FEATURES
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8042 EMULATION
Now, there are many PC designs with a special feature for OS/2
optimization. It is intended to speed up the protected mode switching
operation which is done by the slow speed keyboard controller in the
original PC design. However, this feature often causes compatibility
problem because they use different hardware logic design to bypass the
keyboard controller. Thus, the BIOS is needed to be modified to take
advantage of it. An application without modification may cause
problem.
In HIPPO COM, there are some logic designs in the chipset to
emulate the keyboard controller. An application can work in the usual
way to send commands to keyboard controller, but these commands are
in fact interpreted by the chipset. The protected mode switching
operation is much faster. There will be no potential problem since
modification of software is not needed.
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