Lenovo PC 300PL Techical Information Manual - Page 16

graphics array SVGA modes and Video Electronics Standards Association VESA 1.2., bit

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Chapter 2. System board features The 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: Video subsystem on a chip, including 2D, 3D, and a video port 66 MHz AGP system bus interface with 2X or 4X mode Sideband signaling (some models only) Command list bus mastering support for fast 2D performance 64-bit, 125 MHz SDRAM or 166 MHz SGRAM interface Plug and Play support Advanced Power Management support Color space conversion Hardware scaling The integrated graphics memory controller subsystem supports the VESA Display Data Channel (DDC) standard 1.1 and uses DDC1 and DDC2B to determine optimal values during automatic monitor detection. The video subsystem has the following resource assignments: Figure 2. Video subsystem resources Resource Assignment ROM RAM I/O (hex) IRQ DMA Hex C0000-C7FFF (32KB) Hex A0000-BFFFF VGA registers: Attributes 0-14, CRT controller 0-18/22/24/26, CRTC Extension 0-6, DACSTAT, FEAT, GCTL 0-8, INSTS0-1, MISC, Sequencer 0-4, DAC PCI interrupt 1 (automatically assigned to IRQ 0BH by POST or can be disabled in the Configuration/Setup Utility) None For further information on resource assignments, see Appendix B, "System address maps" on page 36 and Appendix C, "IRQ and DMA channel assignments" on page 40. The PC 300PL Personal Computer supports the following video subsystem modes: 8 Technical Information Manual

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Chapter 2.
System board features
The 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:
±
Video subsystem on a chip, including 2D, 3D, and a video port
±
66 MHz AGP system bus interface with 2X or 4X mode
±
Sideband signaling (some models only)
±
Command list bus mastering support for fast 2D performance
±
64-bit, 125 MHz SDRAM or 166 MHz SGRAM interface
±
Plug and Play support
±
Advanced Power Management support
±
Color space conversion
±
Hardware scaling
The integrated graphics memory controller subsystem supports the VESA Display Data Channel (DDC)
standard 1.1 and uses DDC1 and DDC2B to determine optimal values during automatic monitor detection.
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)
VGA registers: Attributes 0–14, CRT controller 0–18/22/24/26, CRTC Extension 0-6, DACSTAT, FEAT, GCTL
0-8, INSTS0-1, MISC, Sequencer 0-4, DAC
IRQ
PCI interrupt 1 (automatically assigned to IRQ 0BH by POST or can be disabled in the Configuration/Setup
Utility)
DMA
None
For further information on resource assignments, see Appendix
B, “System address maps” on page
36
and Appendix
C, “IRQ and DMA channel assignments” on page
40.
The PC 300PL Personal Computer supports the following video subsystem modes:
8
Technical Information Manual