HP dc5850 manual System Management, Standard Cmos Locations, Security Functions, Location Function

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System Support

4.4.2 Standard CMOS Locations

Table 4-5 describes standard configuration memory locations 0Ah-3Fh. These locations are accessible through using OUT/IN assembly language instructions using port 70/71h or BIOS function INT15, AX=E823h.

Table 4-5.

Configuration Memory (CMOS) Map

Location

Function

Location

Function

00-0Dh

Real-time clock

24h

System board ID

0Eh

Diagnostic status

25h

System architecture data

0Fh

System reset code

26h

Auxiliary peripheral configuration

10h

Diskette drive type

27h

Speed control external drive

11h

Reserved

28h

Expanded/base mem. size, IRQ12

12h

Hard drive type

29h

Miscellaneous configuration

13h

Security functions

2Ah

Hard drive timeout

14h

Equipment installed

2Bh

System inactivity timeout

15h

Base memory size, low byte/KB

2Ch

Monitor timeout, Num Lock Cntrl

16h

Base memory size, high byte/KB

2Dh

Additional flags

17h

Extended memory, low byte/KB

2Eh-2Fh

Checksum of locations 10h-2Dh

18h

Extended memory, high byte/KB

30h-31h

Total extended memory tested

19h

Hard drive 1, primary controller

32h

Century

1Ah

Hard drive 2, primary controller

33h

Miscellaneous flags set by BIOS

1Bh

Hard drive 1, secondary controller

34h

International language

1Ch

Hard drive 2, secondary controller

35h

APM status flags

1Dh

Enhanced hard drive support

36h

ECC POST test single bit

1Eh

Reserved

37h-3Fh

Power-on password

1Fh

Power management functions

40-FFh

Feature Control/Status

NOTES:

Assume unmarked gaps are reserved.

Higher locations (>3Fh) contain information that should be accessed using the INT15, AX=E845h BIOS function (refer to Chapter 8 for BIOS function descriptions).

4.5 System Management

This section describes functions having to do with security, power management, temperature, and overall status. These functions are handled by hardware and firmware (BIOS) and generally configured through the Setup utility.

4.5.1 Security Functions

These systems include various features that provide different levels of security. Note that this subsection describes only the hardware functionality (including that supported by Setup) and does not describe security features that may be provided by the operating system and application software.

 

Technical Reference Guide

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Contents October Technical Reference GuideTechnical Reference Guide Contents Input/Output Interfaces System SupportIntegrated Graphics Subsystem Power and Signal DistributionError Messages and Codes Index System BiosOnline Viewing IntroductionAbout this Guide Additional Information SourcesValues Serial NumberNotational Conventions Special NoticesAcronyms and Abbreviations Common Acronyms and AbbreviationsAcronym or Abbreviation Description CDS Eisa LAN PAL Sdvo URL Introduction Introduction System OverviewFeatures SFF Feature Difference Matrix by Form FactorSystem Architecture HP Compaq dc5850 Business PC Architecture, Block diagram Components Function AMD Processor SupportChipset Chipset Components and FunctionalityComponent Name Function Support ComponentsSystem Memory Support Component FunctionsNetwork Interface Controller Mass StorageSerial Interface Universal Serial Bus InterfaceIntegrated Graphics Controller Integrated Graphics ProcessorAudio Subsystem Integrated Graphics Subsystem StatisticsParameter Operating Non-operating SpecificationsEnvironmental Specifications Factory Configuration Power Supply Electrical SpecificationsParameter SFF Physical SpecificationsSystem Overview Processor/Memory Subsystem Architecture Processor/Memory SubsystemSupported Processors partial listing AMD ProcessorsAMD Processor Overview Processor Changing/UpgradingMemory Subsystem Channel a Channel B Socket Memory Loading/UpgradingMemory Mapping and Pre-allocation Memory Socket LoadingSystem Memory Map for maximum of 8 gigabytes Processor/Memory Subsystem PCI Bus Overview System SupportPCI 2.3 Bus Operation Transaction Protocol Layer Device REQ/GNT Line PCI Connector SlotPCI Express Bus Operation Software/Driver LayerLink Layer PCI Power Management SupportOption ROM Mapping PCI InterruptsPCI 2.3 Connector PCI ConnectorsPCI 2.3 Bus Connector Pinout PCI Express Bus Connector Pinout PCI Express ConnectorsMode Apic ModeSystem Resources InterruptsSystem Interrupts System Board Direct Memory AccessConnector PCI slot 1 J20 PCI Interrupt DistributionClearing Cmos Real-Time Clock and Configuration MemorySecurity Functions Configuration Memory Cmos MapSystem Management Standard Cmos LocationsCable Lock Provision Power-On / Setup PasswordInterface Security Acpi Wake-Up Events Power ManagementAcpi Wake-Up Event System Wakes From System Operational Status LED Indications System Status PowerLED Beeps Action RequiredSystem Status Thermal Sensing and CoolingSystem I/O Map Register Map and Miscellaneous FunctionsPort Function System I/O MapSB700 Functions Gpio FunctionsSIO Controller Functions System Support Input/Output Interfaces AHCI/RAID Support Sata ConnectorPin Sata Connector Pinout Sata InterfacesImplementing Ahci RAID for Non-Factory Configurations Factory Configuration for RAIDRAID 1-Mirroring with Two Hard Drives Diskette Drive Interface Pin Signal Description Pin Diskette Drive Connector PinoutSerial Interface DB-9 Serial Connector PinoutParallel Interface Support Standard Parallel Port ModeEnhanced Parallel Port Mode Extended Capabilities Port ModeDB-25 Parallel Connector Pinout Parallel Interface ConnectorPin Signal Function Keyboard Interface Operation Keyboard/Pointing Device InterfaceKeyboard/Pointing Device Connector Pinout Keyboard/Pointing Device Interface ConnectorPointing Device Interface Operation Universal Serial Bus Interface USB ConnectorUSB Connector Pinout SB700 signals USB Connector LocationUSB Color Code Signal Insulation colorUSB Cable Data USB Cable Length DataAudio Subsystem Audio Subsystem Functional Block DiagramHD Audio Link Bus HD Audio ControllerAudio Multistreaming HD Audio Subsystem Specifications Audio SpecificationsParameter Measurement LAN I/F NIC Network Interface ControllerWake-On-LAN Support Power Management SupportAlert Standard Format Support Parameter Compatibility standard orprotocol NIC ConnectorNIC Specifications NIC SpecificationsIntegrated Graphics Processor Functional Description Integrated Graphics Processor, Block diagramUpgrading Analog Monitor Connector Monitor ConnectorsDB-15 Monitor Connector Pinout DVI-D Monitor Connector Pinout DVI-D ConnectorPin Signal Integrated Graphics Processor Power Distribution Power and Signal DistributionSFF 240-Watt Power Supply Unit Specifications SFF Power SupplyMin Range Current Max Surge Tolerance Loading Ripple MT 300-Watt Power Supply Unit Specifications MT Power SupplyRange or Min Current Max Surge Tolerance Loading Ripple Pressed Power Button Results Power ControlPower Button Power Button ActionsPower LED Indications Condition Wake-On-LAN Wake Up EventsConsumption To S0 by Required System Power StatesPower Transition OS Restart State System ConditionSystem Board Component Designations Signal DistributionDesignator Component function Shows pinouts of headers used on the sytem boards Power and Signal Distribution System Bios Upgrading ROM FlashingChangeable Splash Screen Memory Detection and Configuration Boot FunctionsBoot Device Order Network Boot F12 SupportBoot Error Codes Boot Error CodesVisual power LED Audible speaker Meaning Client Management Functions Function ModeClient Management Functions INT15 System System ID Form Factor Subsystem Device ID Temperature StatusSystem ID and ROM Type System ID NumbersType Data Smbios FunctionsManagement Functions USB Legacy SupportBeeps Power LED Probable Cause Error Messages and CodesBeep/Power LED Codes Table A-1 Beep/Power LED CodesPower-On Self Test Post Messages Table A-2 Error Messages and Codes Table A-3 System Error Messages Probable Cause System Error MessagesMessage Probable Cause Memory Error MessagesMemory Error Messages Table A-4Table A-5 Keyboard Error Messages Probable Cause Keyboard Error MessagesTable A-7 Video Graphics Error Messages Probable Cause Printer Error MessagesVideo Graphics Error Messages Table A-6 Printer Error Messages Probable CauseTable A-8 Diskette Drive Error Messages Probable Cause Diskette Drive Error MessagesTable A-9 Serial Interface Error Messages Probable Cause Serial Interface Error MessagesModem Communications Error Messages System Status Error Messages System Status Error MessagesTable A-11 Table A-12 Hard Drive Error Messages Probable Cause Hard Drive Error MessagesXx = 03, Hard drive read/write compare test Table A-13 Hard Drive Error Messages Probable Cause Table A-14 Video Graphics Error Messages Probable Cause Audio Error MessagesTable A-15 Audio Error Messages Probable Cause Table A-17 Network Interface Error Messages Probable Cause 17 DVD/CD-ROM Error MessagesNetwork Interface Error Messages DVD/CD-ROM Error MessagesTable A-18 Scsi Interface Error Messages Scsi Interface Error Messages 65xx-xx, 66xx-xxPointing Device Interface Error Messages 8601-xx Error Messages and Codes Numerics IndexIndex
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dc5850 specifications

The HP dc5850 is a desktop computer that was designed for business environments, offering a blend of performance, reliability, and efficiency. Released during the height of the mid-2000s, this system is powered by AMD processors, particularly the Athlon or Phenom series, which ensures that it can handle various computational tasks with ease.

The dc5850 features a compact chassis that adheres to the Microtower form factor. This design not only saves space but also allows for easier upgrades and maintenance. The unit typically supports a range of RAM configurations, with options for up to 8GB of DDR2 memory. This flexibility enables the user to tailor the system's performance according to their needs, whether for basic office tasks or more demanding applications.

Storage options on the HP dc5850 include a 3.5-inch HDD that can accommodate substantial data, with capacities typically ranging from 160GB to 1TB. The inclusion of a SATA interface ensures fast data transfer rates, which is essential for improving overall system performance. Moreover, the dc5850 boasts multiple USB ports, including USB 2.0 and sometimes even USB 3.0, facilitating easy connectivity with peripherals such as printers, scanners, and external drives.

Graphics capabilities on the dc5850 are generally provided by integrated solutions, although users have the option to add discrete graphics cards for enhanced performance in visual tasks. The system often comes with integrated audio, which supports basic multimedia needs without requiring additional sound cards.

In terms of connectivity, the HP dc5850 features built-in Ethernet for wired networking and may also offer options for Wi-Fi capabilities via PCI expansion slots. This makes it suitable for networked business environments, enabling seamless integration into office infrastructures.

The system is designed with energy efficiency in mind, complying with various environmental standards, thereby reducing its carbon footprint. This aspect may also lead to lower operational costs for businesses focused on sustainability.

Overall, the HP dc5850 stands out as a versatile desktop solution, catering to the essential needs of small to medium-sized businesses. With its combination of performance, expandability, and energy efficiency, it remains a noteworthy choice for users seeking reliable computing power in a compact and manageable form.