IBM NetVista X40 Technical Information Manual

Also see for 2179: Hardware Maintenance Manual User guide User guide Podręcznik użytkownika

Chapter 2. System board features 7because, although it has a fixed IRQ line, the mouse relies on the addresses of thekeyboard for operation. For the keyboard and mouse interfaces, no resourceassignments are given in the system memory addresses or DMA channels. Forinformation on the resource assignments, see “Input/output address map” on page34 and “Appendix C. IRQ and DMA channel assignments,” on page 39.The system board has PS/2 type connectors for a keyboard and mouse. Forinformation on the connector pin assignments, see “Mouse and keyboard portconnectors” on page 32.Network connectionYour computer is equipped with an Ethernet controller that supports the Wake onLAN feature.Features of the optional Wake on LAN Ethernet adapter are:• Operates in shared 10BASE-T or 100BASE-TX environment• Transmits and receives data at 10 Mbps or 100 Mbps• Has an RJ-45 connector for LAN attachment• Operates on symmetrical multiprocessing (SMP) environments• Supports Wake on LANThe computer has a 3-pin header on the system board that provides the AUX5(auxiliary 5 volts) and wake-up signal connections.Real-time clock and CMOSThe real-time clock is low-power and provides a time-of-day clock and a calendar. Anexternal battery source of 3 V dc maintains the settings.The system uses 242 bytes of complementary metal-oxide semiconductor (CMOS)memory to store data. To erase or reset CMOS memory to the default, use the smallrocker switch on the system board.Note: Refer to the instructions in the Hardware Maintenance Manual beforeattempting to reset CMOS.To locate the battery see “System board” on page 8.Flash EEPROMThe system board uses two megabits (Mb) of flash electrically erasableprogrammable, read-only memory (EEPROM) to store the basic input/output system(BIOS), IBM logo, Configuration/Setup Utility, and Plug and Play data.If necessary, you can update the EEPROM by downloading a stand-alone utilityprogram available from the IBM Web site: http://www.ibm.com/pc.Expansion adaptersEach PCI-expansion connector is a 32-bit slot. PCI-expansion connectors support the32-bit, 5 V dc, local-bus signalling environment defined in PCI Local Bus Specification2.2.Your computer has two PCI slots to support the addition of adapters. For informationon installing adapters, see the User Guide.For information on the connector pin assignments, see “PCI connectors” on page 26.