VT82C42 controller equivalent, keyboard controller.
∗ Fully hardware implemented, 0.8µm CMOS Technology. ∗ Very high speed response of A20 GATE & reset. ∗ Support PS2 style mouse. ∗ Compatible with all major BIOS, includi.
The internal timer counting is based on an 8Mhz clock input from X1, X2 ( or X2, with X1 connected to ground). After the deassertion of RESET#, the VT82C42 will drive high at pin P23 and pin P27. After 6 µs (6 x 8 clocks) of driving, the VT82C42 wil.
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