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Chapter 3
Onboard Resource Settings
External SMI
The EXTSMI (External System Management
Interface) connector, JP1, is used by some
plug-in cards. Certain applications associated
with these plug-in cards use the interface for
hardware control and queries.
Windows 95 Users:
You may encounter problems with some of the devices in the Intel 82371EB
chipset. Neither the PCI Bridge nor the PCI Universal Serial Bus device IDs for
this chipset (also called PIIX4e) are recognized by Windows 95. This is a soft-
ware problem, not a hardware problem, and can be easily remedied by either
upgrading to Windows 98 or installing the 82371EB patch on the Tyan BX Driver
Diskette or CD. The patch can also be downloaded from the Tyan web or ftp site
at http://www.tyan.com/html/drivers.html or at ftp://download.intel.com/design/
impor-
tant!
pcisets/busmastr/setupex.exe. Note that USB requires Windows 95 OSR 2.1 or
above; please contact Microsoft for the USB update.
CMOS RTC
The 440BX AGPset includes a Real Time Clock (RTC) circuit, which provides
the date and time for the system. If the external battery for the RTC is low, it will
prevent your system from POSTing, and you will not get a display. Normally
the life span of an external battery is 2 years. If yours is running low, you will
need to replace it with a new 3V lithium battery (Sony CR2032).
Flash EEPROM
The Tsunami AT uses flash memory to store BIOS programs. It can be updated
as new versions of the BIOS become available. You can upgrade your BIOS
easily using the Flash Writer Utility (see page 61).
RAM Installation
The Tsunami AT uses a 64-bit data path from memory to CPU and can accom-
Battery
JP1
30
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