Table of Contents
Advertisement
Chapter 3 Hardware Description
3.8 Onboard PCI EIDE
The PCI EIDE controller is part of the 430TX PCIset. It supports PIO
mode 3/4 and bus mastering . The peak transfer rate of PIO mode 3/4 can
be as high as 17MB/sec. Using HDDs that support bus mastering, the
peak transfer rate can reach 22MB/sec. There are two IDE connectors,
primary IDE and secondary IDE. With two devices per connector, up to
four IDE drives are supported.
The controller also supports Ultra DMA/33, a new "synchronous DMA"
protocol featured in PIIX4. It is built on Intel's existing 16MB/s Bus
Master interface to improve disk I/O throughput to 33MB/s. It uses both
edges of data strobe to obtain 2X speed across the cable and is backward
compatible with today's drives. It also has 16-bit CRC error detection
across the cable for improved integrity.
3.9 Onboard Multi-I/O
The onboard multi-I/O chip, ALI 5135, supports two 16550
UART-compatible serial ports, one high speed EPP/ECP parallel port,
one floppy controller and IrDA function. The floppy controller supports
2.88MB format. The I/O port addresses of the serial and parallel ports are
programmable via BIOS set-up.
3.10 System Hardware Monitor Device (optional)
The optional Winbond W83781D System Hardware Monitor Device
allows the system to track the PC health through hardware monitoring of
the CPU and system temperature, voltage levels, and CPU and chassis
fans to ensure the system's normal operation.
10
AI5TT Pentium Baby AT Motherboard User's Manual
Hide quick links:
Advertisement
Table of Contents
