E
82378ZB SYSTEM I/O (SIO) AND 82379AB SYSTEM I/O APIC (SIO.A)
Four Dedicated PCI Interrupts
Level Sensitive Mapped to Any Unused Interrupt
Provides the Bridge Between the PCI Bus and ISA Bus 100% PCI and ISA Compatible PCI and ISA Master/Slave Interface Directly Drives 10 PCI Loads and 6 ISA Slots PCI at 25 MHz and 33 MHz ISA from 6 MHz to 8.33 MHz Enhanced DMA Functions Scatter/Gather (S/G) (82378ZB) Fast DMA Type A, B and F (82378ZB) Compatible DMA Transfers 32-bit Addre.
SYSTEM I/O APIC
E
82378ZB SYSTEM I/O (SIO) AND 82379AB SYSTEM I/O APIC (SIO.A)
Four Dedicated PCI Interrupts
Level Sensitive Mapped to Any Unused Interrupt
Provides the Bridge Between the PCI Bus and ISA Bus 100% PCI and ISA Compatible PCI and ISA Master/Slave Interface Directly Drives 10 PCI Loads and 6 ISA Slots PCI at 25 MHz and 33 MHz ISA from 6 MHz to 8.33 MHz Enhanced DMA Functions Scatter/Gather (S/G) (82378ZB) Fast DMA Type A, B and F (82378ZB) Compatible DMA Transfers 32-bit Addressability(82378ZB) 27-bit Addressability(82379AB) Seven Independently Programmable Channels Functionality of Two 82C37A DMA Controllers Data Buffers to Improve Performance 8-Byte DMA/ISA Master Line Buffer 32-bit Posted Memory Write Buffer to ISA Integrated 16-bit BIOS Timer Non-Maskable Interrupts (NMI) PCI System Errors ISA Parity Errors Arbitration for ISA Devices ISA Masters DMA and Refresh
Arbitration for PCI Devices
Six PCI Masters Supported Fixed, Rotating, or a Combination
Utility Bus (X-Bus) Peripheral Support
Provides Chip Select Decode Controls Lower X-Bus Data Byte
Transceiver Functionality of One 82C54 Timer
System Timer Refresh Request Speaker Tone Output
Functionality of Two 82C59 Interrupt Controllers 14 Interrupts Supported Edge/Level Selectable Interrupts I/O APIC (Advanced Programmable Interrupt Controller (82379AB) Support for Multi-Processor Systems System Power Management (Intel SMM Support) Programmable System Managemen.