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Intel 82091AA

The Intel 82091AA is an Advanced Integrated Peripheral (AIP) chip for EISA/ISA systems, integrating multiple I/O controllers.

The Intel 82091AA is an Advanced Integrated Peripheral (AIP) chip designed for EISA and ISA bus systems. It integrates a floppy disk controller, two UARTs (serial ports), a parallel port, an IDE controller, and an oscillator into a single package. This chip consolidates common I/O functions, reducing component count and board space in motherboards and expansion cards. It is typically used in conjunction with Intel's EISA/ISA chipset solutions to provide complete system I/O capabilities.

Specifications

Notes unverified EISA/ISA – Advanced Integrated Peripheral (AIP), includes: floppy disk controller, 2× UARTs, parallel port, IDE controller, oscillator, etc.