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

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MB865 User’s Manual

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Intel MB865 user manual Interrupt Request Lines IRQ, Level Function

MB865 specifications

The Intel MB865 is a cutting-edge motherboard that exemplifies the advanced technologies Intel has become synonymous with in the world of computing. Designed primarily for high-performance computing environments, the MB865 integrates a host of features tailored for both gamers and professionals alike.

One of the standout characteristics of the Intel MB865 is its use of Intel's latest chipset architecture, ensuring compatibility with the latest processors. This motherboard supports Intel's 10th and 11th generation Core processors, allowing users to harness the power of multiple cores and high clock speeds for demanding applications like gaming, video editing, and 3D modeling.

The MB865 boasts a robust power delivery system, featuring a multi-phase power design that ensures stable voltage regulation and optimizes energy efficiency. This characteristic is particularly beneficial for overclocking enthusiasts who seek to push their CPUs beyond stock performance limits. Coupled with a highly effective thermal design, the motherboard helps maintain optimal temperatures, even under extreme loads.

In terms of connectivity, the Intel MB865 is equipped with multiple USB 3.2 Gen 2 ports, providing high-speed data transfer rates for peripherals such as external drives and gaming accessories. The inclusion of USB Type-C further enhances flexibility, enabling users to connect a wider range of devices.

Storage capabilities are also top-notch, with support for M.2 and SATA solid-state drives. This configuration allows for lightning-fast read and write speeds, significantly reducing load times and enhancing overall system responsiveness. The motherboard also features RAID support, enabling users to configure their storage drives for redundancy or performance benefits.

Networking is made seamless with the incorporation of Intel's advanced Ethernet controller, which ensures high-speed wired connectivity. Additionally, the MB865 supports Wi-Fi 6 technology, offering improved wireless performance and the ability to handle multiple devices simultaneously without a hitch.

The Intel MB865 does not compromise on sound quality either, as it comes with an integrated high-definition audio codec, ensuring crystal clear audio playback for gamers and multimedia users. Moreover, the motherboard is equipped with a BIOS that provides a user-friendly interface, allowing for easy system management and configuration adjustments.

In conclusion, the Intel MB865 is a powerhouse motherboard that brings together a blend of high-performance features, extensive connectivity options, and advanced technologies. It is a perfect choice for enthusiasts and professionals looking to build a top-tier system that can handle the demands of modern computing tasks.