VIA 693/693A AT MAINBOARD
INTRODUCTION
1-1
1.
INTRODUCTION
1.1
OVERVIEW
This Mainboard is a high performance personal computer mainboard. It is the AT
form-factor with Slot 1 CPU connector on the board for Pentium ™ II/!!!
Processors. VIA693 or VIA693A chipset is chosen as the system core logic of the
mainboard to give the most outstanding performance and reliability. It is designed
for 233, 266, 300 , 333, 350, 366, 400, 433, 450, 466, 500, 550MHz and higher
speed Pentium™ II and Pentium™ !!! processors
This mainboard is designed by using either VIA693 or VIA693A system chipset.
The difference is shown as following:
Chipset
FSB Clock
PC100
VIA 693
Chipset
66.6 / 100MHz
PC133
VIA 693A
Chipset
66.6 / 100 / 133MHz
This mainboard two channel “PIO” and “Ultra DMA33/66 (Ultra DMA/66 only
valid on VIA 596B chipset) Bus Master” mode PCI IDE ports are built on the
mainboard for IDE devices. One Floppy Disk controller interface, two high speed
Serial ports (UARTs), one multi-mode Parallel port, one PS/2™ mouse port, one
IR interface and two USB ports is designed on the board for wide variety of
peripheral connection.
Pentium™ II, Pentium™ !!! and Celeron™ are the 32-bit processors with RISC
technology, which offers several key features such as built-in 512K/256/128K L2
cache, 12-stage super-pipeline architecture, out of order execution … etc. In order
to optimize of its capabilities and performances, the 32-bit Operating System
(such as Windows® and OS/2™) and 32-bit applications are recommended.
Note: When the chipset on U11 is the VIA596A, you may see the following
message on the screen if you are using the UDMA/66 HDD.
"Primary IDE Channel no 80 conductor cable installed. …"
Please don't worry for the warning on screen. Basically, this VIA596A mainboard
will work with UDMA/66 HDD, only the performance will be somewhat reduced
because it does not support the new transfer protocol.
