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BIOS and drivers
The BIOS identifier for this motherboard is CC82010A.86A. The current BIOS version and current drivers for the Intel® Desktop Board CC820 are found on developer.intel.com.
Processors supported
The Intel Desktop Board CC820 supports the Pentium® III and Pentium® II processors of 242-contact slot type running at bus speeds of 100 MHz or 133 MHz. See supported processors for additional information.
COM Port Issues
Several issues that were seen in BIOS version P04 have been corrected in versions P06 and later. Upgrade your BIOS to resolve these issues.
System Memory
The Intel Desktop Board CC820 supports two 3.3V, 168-pin, 100 MHz, unbuffered Dual In-Line memory Modules (DIMMs) operating in non-ECC. Click here for more information.
Memory with 133 MHz System Memory Bus (SMB) processor
The Intel® Desktop Board CC820 supports only 100 MHz memory. A Memory Translator Hub (MTH) detaches SDRAM bus from the Host Bus allowing these two buses to operate independently and at different frequencies.
The SDRAM bus operates at 100 MHz. The Host Bus (also known as the System Memory Bus or SMB) operates at either 100 MHz or 133 MHz depending on which processor is used. See Figure 2 on page 15 in the Technical Product Specification for a block diagram which illustrates this.
DIMM installation guidelines
The Intel Desktop Board CC820 will not accept all DIMM configurations. DIMMs must be installed using the DIMM configuration guidelines.
Intel® Desktop Board CC820 will not power up-66 MHz host bus processor
If a 66 MHz bus processor is installed in a Intel Desktop Board CC820 it will not boot. The Intel Desktop Board CC820 does not support a 66 MHz bus. See supported processors for additional information.
AGP support
The Intel Desktop Board CC820 supports new AGP cards which comply to AGP specification 2.0 and provides backwards compatibility for cards based on AGP specification 1.0. The CC820 has a universal AGP socket which can accept 1X / 2X cards operating at 3.3 V or 1X / 2X / 4X cards operating at 1.5V.
Ultra ATA/66 support
The Intel Desktop Board CC820's onboard IDE channels support Ultra ATA/66 transfer mode.
Second floppy drive not supported
The Intel Desktop Board CC820 does not support a second floppy drive.
Windows* 95 reports resource conflict with add-in cards and onboard PCI devices in Device Manager
Windows* 95 Device Manager reports a conflict with a "Intel® 82820 Processor to AGP controller" for AGP cards. For PCI cards and onboard PCI devices, Windows 95 Device Manager reports a conflict with a "Intel® 82801AA PCI Bridge." "Intel® 82820 Processor to AGP controller" and "Intel® 82801AA PCI Bridge" are both components of Intel® 82820 chipset which Windows* 95 cannot properly identify. This issue will not affect the functionality of Windows* 95 with AGP or PCI devices.
Additional Information
This applies to:
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