2System Board - (SiS Chipset) (Part Number:
Play port. The PSIO supports two bus master IDE channels providing up to four IDE devices. The PSIO does not require any IDE buffering to be used, and therefore no IDE buffers are used.
The SiS 5513 chip consists of:
•A PCI bridge that translates PCI cycles onto the ISA bus.
•ISA master/DMA device that translates cycles onto the PCI bus.
•A
•A
•A programmable timer with three counters.
•An onboard Plug and Play port.
•A
The PSIO PCI bus interface provides the interface between PSIO and the PCI bus. It contains both PCI master and slave bridges to the PCI bus. As a PCI slave, the PSIO responds to both I/O and memory transfers.
ISA Bus Controller
The PSIO ISA Bus Interface accepts cycles from the PCI bus interface and then translates them for the ISA bus. It also requests the PCI master bridge to generate PCI cycles on behalf of DMA or ISA master. The ISA bus interface contains a standard ISA Bus Controller and a Data Buffering logic. The PSIO can directly support six ISA slots without external data or address buffering.
DMA Controller
The PSIO contains a
Interrupt Controller
The PSIO provides an
Timer/Counter
The PSIO contains a
37