Technical information

Chapter 2. System Board Features
Chip Set Control
The PC 365 uses the second-generation Intel 82440FX chip set. This chip set provides a bridge between
the peripheral component interconnect (PCI) bus and the microprocessor bus. (For information on the PCI
bus, see “PCI-to-ISA Bridge” on page 6.) Also, this chip set controls the system memory interface.
The PC 365 also uses the PIIX3 chip. This chip provides a bridge between the PCI and the industry
standard architecture (ISA) buses, a bus-master, enhanced integrated drive electronics (EIDE) interface,
and a universal serial bus (USB) port.
System Memory
Four dual inline memory module (DIMM) connectors are provided on the system board. The DIMM
connectors are powered by + 3.3 volts. Each DIMM connector is a 168-pin, gold-lead socket. For the pin
assignments, see “System Memory Connectors” on page 30.
The system board supports:
 A maximum of 512 MB (128 MB modules in all four connectors).
 Dynamic random access memory (DRAM) only.
 64-bit (EDO) and 72-bit (ECC) wide memory modules.
Any configuration of DIMMs is acceptable. Characteristics
required by DIMMs include:
 168-pin, unbuffered +3 V modules only.
 Gold-lead tabs only.
 60 nanosecond access speeds only.
 Height of no more than 3.81 cm (1.5 in.).
 To enable error-correcting code, all installed memory must be of the ECC type (a combination of ECC
and nonparity types is configured as nonparity)
Note: Single inline memory modules (SIMMs) are not supported in the PC 365.
Chapter 2. System Board Features 5