Compaq MSEBX900, MSEBX800 Controllers, Interrupt Sources Used Onboard, Timer Assignment Function

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DIGITAL-LOGIC AG

MSEBX800/900 Detailed Manual V1.0

5.3.Controllers

5.3.1.Interrupt Controllers

An 8259A compatible interrupt controller, within the chipset, provides seven prioritized interrupt levels. Of these, several are normally associated with the board's onboard device interfaces and controllers, and several are available on the AT expansion bus.

Interrupt

Sources

Used Onboard

IRQ0

ROM-BIOS clock tick function, from timer 0

Yes

IRQ1

Keyboard controller output buffer full

Yes

IRQ2

Used for cascade 2. 8259

Yes

IRQ3

COM2 serial port

Yes

IRQ4

COM1 serial port

Yes

IRQ5

LPT2 parallel printer (if present)

No ￿

IRQ6

Floppy controller

Yes

IRQ7

LPT1 parallel printer

Yes

IRQ8

Battery backed clock

Yes

IRQ9

Free for user

No ￿

IRQ10

Free for user

No ￿

IRQ11

Free for user

No ￿

IRQ12

PS/2 mouse

Yes

IRQ13

Math. coprocessor

Yes

IRQ14

Hard disk IDE / SCSI

Yes

IRQ15

Free for user

No ￿￿

￿It may depend on the LAN configuration.

￿￿IRQ 15 = if option CF is not assembled, then free for user.

5.3.2.Timers and Counters

5.3.2.1.Programmable Timers

An 8253 compatible timer/counter device is also included in the board's ASIC device. This device is utilized in precisely the same manner as in a standard AT implementation. Each channel of the 8253 is driven by a 1.190MHz clock, derived from a 14.318MHz oscillator, which can be internally divided in order to provide a variety of frequencies.

Timer 2 can also be used as a general purpose timer if the speaker function is not required.

Timer Assignment

Timer

Function

0

1

2

ROM-BIOS clock tick (18.2Hz) DRAM refresh request timing (15µs) Speaker tone generation time base

5.3.2.2.Watchdog

The watchdog timer detects a system crash and performs a hardware reset. After power up, the watchdog is always disabled as the BIOS does not send strobes to the watchdog. In case the user wants to take advantage of the watchdog, the application must produce a strobe at least every 800ms. If no strobe occurs within the 800ms, the watchdog resets the system.

5.3.3.Core BIOS Download

See the separate driver/software/BIOS manual, GEODE_LX800-900.

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Contents MSEBX800/900 MSEBX800/900 Detailed Manual DIGITAL-LOGIC AGTable of Contents Index Environmental Protection Statement PrefaceTrademarks DisclaimerTechnical Support Limited Two Year WarrantyRecycling Information CE Conformity Explanation of SymbolsApplicable Documents and Standards RoHS Commitment For Your SafetyRoHS Compatible Product Design Swiss Association for Quality and Management Systems Swiss QualityStandards Standard FeaturesUnique Features OverviewBlock Diagrams 2. SM800 Memory Specification MSEBX800/900 SpecificationsSpecification Chipset SpecificationPhysical Characteristics Specification PC/104plus External Interfaces SpecificationPower Supply Specification Power Consumption SpecificationSecurity Operating Temperature Specification MIL-810-501 MIL-810-502EMI / EMC Tests Specification Options Description Accessories DescriptionExamples of Ordering Codes Article DescriptionMSEBX800 Dimensions & DiagramsDIGITAL-LOGIC AG DIGITAL-LOGIC AG High Frequency Radiation to meet EN55022/EN61000 Incompatibilities to a Standard PC/ATMSEBX800/900 Related Application Notes Min FCPU MHz RTC Battery LifetimeThermoscan Product Part Number Serial Number VersionImportant Information PreparationMounting the smartModule Photo RAM Assembly/DisassemblyDIGITAL-LOGIC AG Power & Reset Buttons PC104 Bus BUS SignalsMEMR, input/output RESETDRV, outputMaster, input MEMCS16, inputAddressing PCI Devices on the MSEBX800 Detailed System Description Boot TimeSystem Boot Times Definitions/Boot-Medium Quick Normal Interfaces X31 Keyboard Pin SignalX32 Mouse Pin Signal Floppy Disk Interface Technology Floppy Interface ConfigurationFloppy Interface Connector Interrupt Sources Used Onboard Timer Assignment FunctionControllers Jumper J9 Bios RecoveryDescription and Location of the Connectors Connector Plan X14 Video Input Channel Pin Signal Name Function In/out Connector DescriptionsX1 Power Input Pin Signal X2 ATX Connector Pin SignalX27 SPDif Connector Pin Signal X15 LCD Connector Pin SignalX20 Microphone Input Audio Connector X22 Front Stereo Output Audio ConnectorX30C VGA X33B / X33C USB 0/1 Pin Signal X31 PS/2Keyboard AT Compatible Pin SignalX32 PS/2Mouse Pin Signal X33A Ethernet LAN RJ-45 Pin SignalCpld X39 Serial Port SUB connector SignalX60 Hard Disk Pin Signal X53 Utility Pin SignalX70 Floppy Disk FD26 Pin Signal Name Function In/out X62 3.5 Hard Disk Pin SignalX100 PC/104 Connector ISA Pin X101 PC/104+ Connector PCI Pin X120 MiniPCI Interface Pin Signal X130 PCI Slot Standard PCI Slot Pin Name PCI Pin Description 3pin Jumpers Jumper Locations on the Board2pin Jumpers Jumpers on the MSEBX800 Index SQS

MSEBX900, MSEBX800 specifications

The Compaq MSEBX800 and MSEBX900 are notable entries in the realm of business computing, designed specifically to meet the needs of enterprise environments. These models epitomize reliability, performance, and advanced technology, making them suitable for a variety of applications in both small offices and large enterprises.

The MSEBX800, built for efficiency, features a powerful processor capable of handling demanding workloads. It supports multiple cores, providing excellent multitasking capabilities. Businesses looking for enhanced productivity will find the MSEBX800's ability to run several applications simultaneously without a hitch particularly beneficial. The system also incorporates ample memory slots, allowing for easy upgrades to accommodate growing data needs.

On the other hand, the MSEBX900 takes performance a notch higher. It is engineered for superior performance with enhanced graphics capabilities. Featuring advanced GPU options, the MSEBX900 is well-suited for tasks such as graphic design and video editing, delivering crisp visuals and smooth rendering. The inclusion of high-speed storage options, including SSD configurations, accelerates data access times, promoting a seamless user experience.

Both models come equipped with energy-efficient components, ensuring lower operational costs and a reduced environmental footprint. Their design focuses on cooling efficiency, allowing them to operate at optimal temperatures even under heavy workloads.

Connectivity is another strong suit of both MSEBX800 and MSEBX900. They are equipped with multiple USB ports, including USB 3.0 for rapid data transfer, as well as HDMI and DisplayPort options for versatile display capabilities. Additionally, these models support various networking technologies for seamless integration into existing IT infrastructures.

Security features are paramount in these models, incorporating advanced encryption and hardware security options to protect sensitive business information. Their compatibility with enterprise-level management tools further facilitates IT administration, making it easy to monitor and maintain the systems remotely.

In summary, the Compaq MSEBX800 and MSEBX900 stand out with their cutting-edge technology, robust performance, and essential features tailored specifically for business users. These models cater to the evolving needs of enterprises, ensuring they remain productive and competitive in the fast-paced digital landscape.