IBM PC 300GL manual Video subsystem resources Resource Assignment, Rom, Ram, Irq, Dma

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The integrated video subsystem supports all video graphics array (VGA) modes and is compliant with super video graphics array (SVGA) modes and Video Electronics Standards Association (VESA) 1.2. Some enhanced features include:

•Integrated video subsystem on chip, including 2D, 3D, and video port

•66 MHz AGP system bus interface with 2X and 4X

•Sideband signaling (some models only)

•Command list bus mastering support for fast 2D and 3D performance

•64-bit, 125 MHz SDRAM or 166 MHz SGRAM interface

•Plug and Play support

•4 MB dynamic display cache memory

•Advanced Power Management (APM) support

•Color space conversion

•Hardware scaling

The integrated graphics memory controller subsystem complys with the VESA Display Data Channel (DDC) 1.1 standard and uses DDC1 and DDC2B to determine optimal values during automatic minor detection.

The video subsystem has the following resource assignments.

Table 2. Video subsystem resources

Resource	Assignment

ROM	Hex C0000-C7FFF (32KB)

RAM	Hex A0000-BFFFF (standard VGA frame buffer)

I/O	VGA, sequencer, CRT controller, graphics controller, attribute, RAMDAC,
	extended sequencer, extended CRTC registers

IRQ	PCI interrupt 1 (enabled by default in the Configuration/Setup Utility
	program. Normally assigned to IRQ 0B when nothing else is installed in
	the system. 3D systems use this interrupt.)

DMA	None, N/A for AGP bus

For further information on resource assignments, see “Appendix B. System address maps,” on page 47 and “Appendix C. IRQ and DMA channel assignments,” on page 53.

Chapter 2. System board features 9

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Contents HcchM mlmiM mlni hcc mlml HcchM mlmiM mlni hcc mlml Second Edition March Contents Page Preface Related publicationsTerminology Features System OverviewCD-RW Wake on LAN Adsl modemsWake on Ring PC 300 GL and 300 PL System board features Intel Pentium III microprocessor with MMX technologyL2 Cache Chip set controlTable . Memory Configuration MB Total Memory Mem O IDE bus master interface PCI BusUSB interface Video Subsystem Video subsystem resources Resource Assignment ROMRAM IRQAudio Subsystem Diskette Drive Interface Integrated peripheral controllerSerial ports Parallel port Keyboard and mouse portsNetwork connection Real-time clock and CmosFlash Eeprom Expansion adaptersPhysical layout Rocker switches ÝdimmLarge rocker switch settings Microprocessor Speed Connector panel Cable connectorsSmall rocker switch settings Function 18 PC 300 GL and 300 PL USB 20 PC 300 GL and 300 PL Physical specifications PC 300 GL and PL desktopPC300 PL and GL tower Heat outputAirflow Acoustical noise-emission valuesPhysical specifications 24 PC 300 GL and 300 PL Power supply Power inputPower output Power input requirements Specification MeasurementsComponent outputs System board Supply voltage Maximum current ToleranceKeyboard port Supply voltage Maximum current Tolerance USB port Supply voltage Maximum current ToleranceOutput protection Connector descriptionVideo port pin Supply voltage Maximum current Tolerance 28 PC 300 GL and 300 PL System software Plug and PlayConfiguration/Setup Utility program Advanced Power Management APMAdvanced Configuration and Power Interface Acpi Flash update utility programHardware compatibility System compatibilityHardware interrupts Software interrupts Software compatibilityMachine-sensitive programs Appendix A. Connector pin assignments Svga monitor connectorSvga monitor port connector pin assignments Pin Signal DDC2BDVI-I monitor connector System memory connectorVSS DQ0 DQ1DQ2 DQ3BA0 BA1 CK1 CK0CKE0 DQMB2System memory connector pin input/output Pin Signal name GND VDD WE#CAS# DQMB0# DQMB4# DQMB1#Vref GND CK2SA0 SDA SA0 VDDPCI connectors PCI connector pin assignments Pin SignalFRAME# IRDY#TRDY# DEVSEL#IDE connectors IDE connector pin assignments Pin SignalDiskette drive connector Diskette drive connector pin assignments Pin SignalMSEN0 MSEN1Wake on LAN connectors Power supply connectorUSB port connectors Mouse and keyboard port connectors Serial port connectorMouse port connector pin assignments Pin Signal Keyboard port connector pin assignments Pin SignalParallel port connector Parallel port connector pin assignments Pin SignalSystem memory map Appendix B. System address mapsFFFE0000-FFFFFFFF O address map Address hex Size Description Input/output address mapLPT3 COM2 LPT2LPT1 COM1DMA I/O address map PCI configuration space map 52 PC 300 GL and 300 PL IRQ channel assignments Appendix C. IRQ and DMA channel assignmentsSystem resource DMA channel assignments Data width System resource Post error codes Appendix D. Error codesBeep codes 56 PC 300 GL and 300 PL Appendix E. Notices and Trademarks IBM58 PC 300 GL and 300 PL Bibliography 60 PC 300 GL and 300 PL Index PCIUart