8042 KEYBOARD CONTROLLER DESCRIPTION
The FDC37B77x is a Super I/O and Universal
The Universal Keyboard Controller uses an
8042 microcontroller CPU core. This section
concentrates on the FDC37B77x enhancements
to the 8042. For general information about the
8042, refer to the "Hardware Description of the
8042" in the 8-Bit Embedded Controller Hand-
book.
Keyboard Controller that is designed for
intelligent keyboard management in desktop
computer applications. The Super I/O supports
a Floppy Disk Controller, two 16550 type serial
ports one ECP/EPP Parallel Port.
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 FDC37B77x.
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