PC-Compatible Registers

Programmable Interrupt Controller (8259 Compatible )

Hornet-Specific Registers

Programmable Interval Timer (8254 Compatible)

Programmable Peripheral Interface (Emulates 8255)

Standard Display Controller Registers (PC CGA/MDA Compatible)

Serial Port (16450 Compatible UART)

Hornet-Specific Registers

Keyboard

Real-Time Clock

Miscellaneous Registers

Nonstandard Display Controller Registers

BitBlt Registers