Acer 521 manual Item NB Specification

Item (NB Cont.)		Specification
Features	•	New multi-level texture cache to give optimal performance,
		greater than 8x the previous designs.
	• High efficiency ring bus memory controller:
	• Programmable arbitration logic maximizes memory efficiency,
		software upgradeable.
	• Fully associative texture, color, and Z cache design.
	• New hierarchical Z and stencil buffers with early Z Test.
	• New lossless Z-buffer compression for both Z and stencil.
	• Fast Z-Buffer Clear.
	• Z cache optimized for real-time shadow rendering.
	• Z and color compression resources virtualized to a 32-bit
		addressing space, for support of multiple render targets and
		textures simultaneously.
	Motion Video Acceleration Features
	• Video scaling and fully programmable YCrCb to RGB color
		space conversion for full-speed video playback and fully
		adjustable color controls.
	• Adaptive de-interlacing eliminates video artifacts caused by
		displaying interlaced video on non-interlaced displays, and by
		analyzing image and using optimal de-interlacing function on a
		per-pixel basis.
	• H.264 implementation is based on the ISO/IEC 14496-10 spec.
	• VC-1 implementation is based on the SMPTE 421M spec.
	• For the RS880MC: MPEG-2 decode acceleration for SD
		contents:
	•	Hardware motion compensation.
	• Hardware Inverse Discrete Cosine Transform.
	•	Multiple Display Features
	General
	• Resolution, refresh rates, and display data can be completely
		independent for the two display paths.
	• ¡E Each display controller supports true 30 bits per pixel
		throughout the display pipe.
	• ¡E Each display path supports VGA and accelerated modes,
		video overlay, hardware cursor, hardware icon, and palette
		gamma correction.
	• Supports both interlaced and non-interlaced displays.
	• Full ratiometric expansion ability is supported for source desktop
		modes up to 1920 pixels/line.
	• Maximum DAC frequency of 400 MHz.
	• Supports 8, 16, 32, and 64-bpp depths for the main graphics
		layer:
	• For 32-bpp depth, supports xRGB 8:8:8:8, xRGB 2:10:10:10,
		sCrYCb 8:8:8:8, and xCrYCb 2:10:10:10 data formats.
	• For 64-bpp depth, supports xRGB 16:16:16:16 data format.
	• Independent gamma, color conversion and correction controls
		for main graphics layer.
	• Support for DDC1 and DDC2B+ for plug and play monitors.
	• 8-bit alpha blending of graphics and video overlay.

18 Chapter 1