8042 KEYBOARD CONTROLLER DESCRIPTION
A Universal Keyboard Controller designed for
intelligent keyboard management in desktop
computer applications is implemented. The
Universal Keyboard Controller uses an 8042
concentrates on the enhancements to the 8042.
For general information about the 8042, refer to
the "Hardware Description of the 8042" in the 8-Bit
Embedded
Controller
Handbook.
microcontroller CPU core.
This section
8042A
LS05
P27
P10
KDAT
KCLK
MCLK
MDAT
P26
TST0
P23
TST1
P22
P11
Keyboard and Mouse Interface
KIRQ is the Keyboard IRQ
MIRQ is the Mouse IRQ
Port 21 is used to create a GATEA20 signal from the FDC37B72x.
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