Intel 82380AB MOBILE PCI-TO-ISA BRIDGE (MISA) (INTEL 380FB PCISET)

Solution:

• Intel 380AB/PB Dock Set Product Overview

  The Intel 380AB/PB Dock Set (380AB/PB) consists of the 82380AB Mobile PCI-to-ISA Bridge (MISA) and the 82380PB Mobile PCI-to-PCI Bridge (MPCI). The 380AB/PB supports four PCI slots and three ISA slots. The MPCI and MISA can also be used individually to provide either PCI or ISA slot expansion.
  
  The 380PB MPCI provides a PCI-to-PCI bridge to a 5V PCI desktop style add-in bus. Internal arbitration supports four bus masters on the secondary PCI bus.

• Intel 82380AB MOBILE PCI-TO-ISA BRIDGE (MISA) Datasheet

  The Intel 380FB PCIset (380FB) consists of the 82380FB Mobile PCI-to-PCI Bridge (MPCI2) and the 82380AB Mobile PCI-to-ISA Bridge (MISA). The 380FB provides the logic necessary to build a full Hot Docking capable docking station with 5V PCI and ISA add-in expansion slots. MPCI2 provides the docking control for Hot-Insertion, power management and a PCI-to-PCI bridge to a 5V PCI desktop style add-in bus. MISA provides a PCI-to-ISA bridge for a 5V ISA desktop style add-in bus.
  
  MISA provides both a master and slave interface to the PCI bus. As a PCI master, MISA runs cycles on behalf of ISA masters. As a PCI slave, MISA accepts cycles initiated by PCI masters targeted for the MISA’s internal configuration registers or ISA Bus.
  
  MISA incorporates a fully ISA Bus compatible master and slave interface. MISA directly drives 3 ISA slots without external data or address buffering. The ISA interface also provides byte swap logic, I/O recovery support, wait-state generation, refresh and SYSCLK generation. MISA supports compatible ISA DMA timings for all 7 DMA channels. MISA integrates ISA refresh logic including refresh address generation and a refresh timer.
  
  MISA implements the PC/PCI DMA protocol for the serialization of the docking station DMA and ISA master requests over the PCI Bus. MISA regenerates ISA DMA cycles from the PC/PCI DMA cycles taking place across the PCI Bus.