IBM 6278 Video subsystem, Graphics memory controller hub Super Video Graphics Array, Apm, Acpi

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Chapter 2. System board features

Video subsystem

The video subsystem includes the Intel 810 graphics controller integrated in the Graphi Controller Hub (GMCH) and 4MB of 100MHz local graphics display cache SDRAM.

Graphics memory controller hub (Super Video Graphics Array)

The video subsystem uses system memory for display buffer, commands, and 3D textures AGP-enabled operating systems via Dynamic Video Memory Technology (DVMT). The Intel 810 gra controller drivers will adjust the memory footprint depending on available system memory, resolution, and presence of the display cache local memory. DVMT employs direct AGP and arbitration to dynamically allocate and deallocate memory for textures for applications texture memory.

The operating system requires allocation of up to 1MB of system memory to support lega properties will display up to 1MB less than physical system memory available to the ope

The integrated graphics memory controller hub supports all video graphics array (VGA) mo compliant with super video graphics array (SVGA) modes and Video Electronics Standards As (VESA) 1.2. Some of the features are:

Ÿ

2D and 3D hardware acceleration with hardware cursor

Ÿ

Integrated 230 MHz RAMDAC for

up to 1600x1200 at 85Hz resolution

Ÿ

Hardware Motion Compensation via Intel HWMC Software Development Kit

Ÿ

Advanced

Power

Management

(APM)

 

 

Ÿ

Advanced

Configuration

and

Power

Interface

(ACPI)

Ÿ

On

Now

(Suspend

to RAM)

 

 

 

Ÿ

Plug

and

Play

 

 

 

 

 

Ÿ

VESA Display Data Channel version

DDC2B

 

Ÿ

GDI,

Direct X, and

OpenGL v1.1 Application

Programming Interfaces

The integrated graphics memory controller subsystem supports the VESA Display Data Channel standard 1.1 and uses DDC1 and DDC2B to determine optimal values during automatic monito

The video subsystem has the following resource assignments:

Figure 2.

Video subsystem resources

 

 

 

 

 

 

 

 

 

 

 

 

Resource

Assignment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ROM

(hex)

C0000–C7FFF (32KB)

 

 

 

 

 

 

RAM

(hex)

A0000–BFFFF

 

 

 

 

 

 

I/O

(hex)

3B0–3BB, 3C0–3DF

 

 

 

 

 

IRQ

 

PCI

interrupt

#A

(default assigned to ISA

IRQ #1)

 

DMA

 

None

 

 

 

 

 

 

 

For further

information

on

resource

assignments,

see

Appendix B, “System address maps” on

and

Appendix C,

“IRQ and

DMA channel

assignments”

on

page 40.

6 Technical Information Manual

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Contents Technical Information Manual PC 300GL Types 6268, 6278, Are 1999Apply WithContents Post BiosSystem software System compatibilityUSB port Internal Dasd 26. J13 Modem/Ring Wakeup Connector Pin AssignmentsSystem board Keyboard port Terminology usage PrefaceRelated publications IBMWhen Expressing storage Capacity MB equals Viii Technical Information Manual System overview Major featuresSystem overview Ring Other featuresNetwork support Ring DetectFeatures Chapter SystemSdram System memoryPCI bus DimmBus IDE bus master interfaceUSB interface APM Video subsystemGraphics memory controller hub Super Video Graphics Array AcpiSupported Enhanced VGA video modes PC 300GL supports the following video subsystem modesSupported VGA video modes Features Mode Screen Resolution Colors Refresh RateMonitor support Video memoryDiskette drive interface Audio subsystemController Serial portsKeyboard and mouse ports Default setting for the serial port is COM1Parallel port Serial port assignmentsExpansion adapters Network connectionFlash Eeprom ClockPhysical layout Cable connectorsBios configuration jumper J7A1 JumperConnector panel Connector panel for the desktop modelDesktop Physical specificationsPhysical specifications Computers Not SupportCabling RequirementsPower output Power supplyPower input Power supplyComponents draw less current than Maximum Shown For Each PCI connectorComponent outputs Outputs Connector pin Assignments See Appendix a Pin Power That AvailableNominal Value Power Power supplySystem software System softwarePlay Diagnostic program Configuration/Setup Utility programAdvanced Configuration and Power Interface UtilityHardware interrupts System compatibilityHardware compatibility System compatibilityDrive type 720 KB Mode MB Mode Hard disk drives and controllerMachine-sensitive programs Software compatibilitySoftware interrupts Memory connectors Appendix A. Connector pin assignmentsMonitor connector Appendix A. Connector pin assignmentsConnector Pin X64 Non-Parity X72 ECCAssignments Connector pinSystem memory connector pin input/output Pin Assignments 3. System memory connector pin input/outputPin Signal Name PCI connectors PCI bus connector PCI connector pin assignmentsConnector PinIDE connectors IDE connector pin assignmentsSupply Diskette Drive Connector Pin AssignmentsDrive Port Wakeup and Wake on LAN connectorsUSB port connectors KeyboardSerial Port Connector Pin Assignments Serial port connectorKeyboard port connector pin assignments Parallel port connector pin assignments2. Parallel port connector pin assignments Appendix Appendix B. System address mapsSystem SystemMaps ICH1, DMADMA I/O address map Are ReservedO address map Bits Byte PointerSystem address maps ConfigurationMap IRQ channel assignments Appendix C. IRQ and DMA channel assignmentsAppendix C. IRQ and DMA channel assignments DMA channel assignmentsBeep codes Appendix D. Error CodesError Codes Complete ListReference Appendix E. Notices and trademarksReferences This Publication 300Low Pin Count Interface Specification Advanced PowerSpecification ReferencesIndex IndexError Codes Power Consumption Description For

6278, 6268, 6288 specifications

The IBM 6278, 6288, and 6268 are part of IBM's extensive lineup of mid-range computers, specifically tailored for business environments in the late 1980s and early 1990s. These systems were designed to handle substantial data processing tasks, facilitating efficient business operations with robust performance and reliability.

The IBM 6278 was notable for its high-performance capabilities, making it suitable for a variety of applications ranging from transaction processing to complex computations. One of the main features of the 6278 was its multiprocessing capability, which allowed it to run multiple tasks concurrently. This was achieved through a combination of advanced hardware and software that optimized performance and resource allocation.

Similarly, the IBM 6288 was recognized for its versatility and scalability. This system incorporated enhanced memory management and was capable of handling larger workloads than its predecessors. The 6288 was designed with user-friendly interfaces and supported various input/output devices, making it easier for organizations to integrate into existing IT infrastructures. Additionally, it provided improved connectivity options, essential for modern networking needs at the time.

The IBM 6268, on the other hand, offered a balance between cost and performance, appealing to smaller businesses or those with less intensive data processing requirements. Despite being less powerful than the 6278 and 6288, the 6268 still managed to include essential features such as reliable data storage, effective processing speed, and compatibility with IBM's extensive software ecosystem.

All three models utilized IBM's proprietary operating systems, which were well-known for their robustness and security features. They were built with technologies such as error detection and correction, ensuring the integrity of data processing tasks. The architecture of these systems also allowed for easy upgrades, enabling businesses to expand their capabilities without a complete overhaul of their IT infrastructure.

In summary, the IBM 6278, 6288, and 6268 represented a significant advancement in mid-range computing technology during their era. Their main features encompassed multiprocessing, scalability, and user-friendly interfaces, making them valuable assets for businesses seeking reliable and efficient computing solutions. These systems laid the groundwork for future innovations in business computing, and despite their age, they remain a significant part of IBM's legacy in the computing industry.