Intel MB879 user manual Interrupt Request Lines IRQ, Level Function

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APPENDIX

B. Interrupt Request Lines (IRQ)

Peripheral devices use interrupt request lines to notify CPU for the service required. The following table shows the IRQ used by the devices on board.

Level

Function

IRQ0

System Timer Output

IRQ1

Keyboard

IRQ2

Interrupt Cascade

IRQ3

Serial Port #2

IRQ4

Serial Port #1

IRQ5

Reserved

IRQ6

Floppy Disk Controller

IRQ7

Parallel Port #1

IRQ8

Real Time Clock

IRQ9

Reserved

IRQ10

Reserved

IRQ11

Reserved

IRQ12

PS/2 Mouse

IRQ13

80287

IRQ14

Primary IDE

IRQ15

Secondary IDE

58

MB879 User’s Manual

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Contents USER’S Manual VersionAcknowledgments Table of Contents Bios Setup Appendix MB879 Mini ITX Motherboard Introduction Product DescriptionChecklist MB879 Specifications ChipsetBoard Dimensions Installations Installing the CPU Installing the Memory Installing and Removing Memory ModulesSetting the Jumpers Jumper Locations on MB879 JP1 COM4 RS232 +5V / +12V Power Setting JP3 COM3 RS232 +5V / +12V Power SettingJP2 Lvds Panel Voltage Selection JP4 CPU FSB SelectionJP5 Clear Cmos Setting W1 Lvds Resolution Switch SettingConnectors on MB879 Connector Locations on MB879 CN1 PS/2 Keyboard and PS/2 Mouse Connectors FAN1 CPU Fan Power Connector FAN2 System Fan Power ConnectorJ1 Floppy Drive Connector IDE1 IDE ConnectorJ3 TV Out Header RCA & S-Video J2 ATX Power Supply ConnectorJ4 COM2, COM3, COM4 Serial Ports J7 Panel Inverter Power Connector J5 IrDA ConnectorJ8 Digital I/O J10 1394 Connector J11 Panel Inverter Power ConnectorJ12 Mini PCI Connector J13 Speaker Connector J14 Front Audio ConnectorJ18 System Function Connector J15, J16 Serial ATA Connectors J17 Wake On LAN ConnectorJ19 USB5 / USB6 Connector J21 Power LED Connector J20 CD-In Pin HeaderThis page is intentionally left blank Bios Setup Bios Introduction Bios SetupPhoenix AwardBIOS Cmos Setup Utility Standard Cmos Setup DateIDE Channel Master/Slave TimeDrive a Video Halt OnAdvanced Bios Features CPU FeatureHard Disk Boot Priority Virus WarningQuick Power On Self Test First/Second/Third Boot DeviceBoot Other Device Boot Up Floppy SeekTypematic Delay Msec Apic ModeSecurity Option MPS Version Control for OSAdvanced Chipset Features Current MRC VersionSystem Bios Cacheable Current FSB FrequencyCurrent Dram Frequency Memory Frequencty ForBIU Power Mgmt Address Step EnablePIF Stage Dynamic ClockLink & GPP Configuration Pcie GFX SB Payload SizePcie GPP SB Payload Size Clock Gating for TxClkIntegrated Peripherals Button onlyIDE HDD Block Mode Power on FunctionKB Power on Password Hot Key Power onUart Mode Select Watch Dog Timer SelectIDE DMA Transfer Access Onboard FDC ControllerIDE Primary/Secondary Master/Slave Udma Onboard AC97 AudioOnboard LAN OnboardPower Management Setup PowerOn by PCI Card PowerFail StatusRTC Alarm Resume Video Off MethodPNP/PCI Configurations Reset Configuration DataResources Controlled by PCI/VGA Palette SnoopTemperatures/Voltages CPU Warning TemperaturePC Health Status Auto Detect PCI Clk Frequency/Voltage ControlSpread Spectrum Load Fail-Safe Defaults Load Optimized DefaultsSet Supervisor/User Password Save & Exit SetupThis page is intentionally left blank Drivers Installation ATI Radeon Xpress 200 Series Drivers Installation Drivers Installation Driver Installation Realtek AC97 Codec Audio Driver Installation Driver Installation LAN Driver Installation Driver Installation Drivers Installation This page is intentionally left blank Appendix O Port Address MapInterrupt Request Lines IRQ Level FunctionWatchdog Timer Configuration Sample CodeUnsigned int result //0=NA,1=ITE8712 ITE8712BASE = 0x2E Appendix Set Logic Device
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MB879 specifications

The Intel MB879, a powerful microprocessor from Intel, is well-regarded within the realm of computing technology. As part of the Intel architecture family, it combines cutting-edge performance with advanced energy efficiency features, catering to a wide variety of applications from embedded systems to high-performance computing.

One of the standout features of the Intel MB879 is its multi-core design. This allows for enhanced multitasking capabilities and improved performance in parallel processing environments. By distributing workloads across multiple cores, the MB879 ensures that applications, particularly those requiring intensive computational power, run smoothly and efficiently.

The processor is built on a robust 14nm manufacturing process, which contributes to its impressive performance per watt ratio. This inherent energy efficiency not only reduces operational costs but also aligns with the growing demand for greener computing solutions. The lower thermal output allows for quieter cooling solutions, making it suited for environments where noise levels are a concern.

Another significant characteristic of the Intel MB879 is its support for advanced memory technologies. With DDR4 memory support, it can handle greater bandwidth and efficiency, significantly improving data access speeds. This is particularly beneficial for memory-intensive applications such as database management and large-scale simulations.

Intel's integrated graphics technology is another notable feature of the MB879. The integrated GPU facilitates smooth graphic rendering without the need for a dedicated graphics card, making the processor suitable for light gaming and media playback while preserving system space and reducing power consumption.

Security is also a priority with the Intel MB879, which integrates advanced security features to protect data and enhance system integrity. Technologies like Intel Secure Boot and Intel Trusted Execution Technology help safeguard against various cyber threats, ensuring that sensitive information remains secure.

In conclusion, the Intel MB879 stands as a versatile and powerful microprocessor offering a blend of performance, efficiency, and security. With its multi-core architecture, advanced memory support, integrated graphics, and robust security features, it meets the demands of modern computing, from everyday applications to enterprise-level tasks, making it an excellent choice for developers and businesses alike.