82351 Local I/O EISA Support Peripheral (LIO.E):

The 82351 Local l/O EISA support peripheral (LIO.E) supports or integrates all of the I/O peripheral functions for a typical EISA system board with a minimum of external logic. The LIO.E contains System Configuration, Status/Control Registers, Interrupt Logic, two Serial Port/Modem interfaces, one Real Time Clock interface, Parallel Port interface, local I/O bus address decoder, and data buffer control. The LIO.E can also be easily used in Non-EISA systems.

Features:

• EISA and PC/AT System Fully Compatible Local I/O Controller
• Integrates:
  • Local I/O Address Decoder
  • EISA System Configuration Registers
  • Fast CPU Reset and A20 Gate Port (92h)
  • Two External Serial I/O Controller Interfaces with Four Assignable Interrupts Generation
  • External Real Time Clock Interface
  • External EISA Configuration RAM Interface
  • Parallel Port Interface
  • i486 and 386 CPU Compatible Numeric Co-Processor Interface
  • External Floppy Disk Controller Interface
  • External Keyboard (8x42) Controller Interface including Interrupt Generation
  • EISA System ID Register
• Fast A20GATE, CPU RESET, and FLUSH # Generation by Snooping Keyboard Controller Commands
• Four Programmable General Purpose Chip Selects for Additional Local I/O Devices
• Provides I/O Address Decode and Commands
• Provides I/O Data Bus Buffer Control
• EPROM or FLASH EPROM BIOS ROM Interface (BIOS ROM Address is Externally Decoded)
• Edge or Level Sensitive Triggered Interrupt Generation Selection
• 132 Pin PQFP Package