Overview:

The ProMotion-aT24 is a high-performance, highly-integrated multimedia user interface accelerator by Alliance Semiconductor. It is a part of their MultiMedia User Interface accelerators family, featuring a powerful Windows graphical user interface (GUI) accelerator engine, motion video acceleration hardware, and a high-precision DAC + clock generator. All of these features are incorporated into a single integrated 208-pin PQFP package. The ProMotion-aT24 family offers pin-compatibility with previous generation ProMotion-642x controllers.

Key Features:

• Fast 128-bit GUI accelerator:
  • Optimized 24- and 32-bit truecolor
  • 256 raster operations
  • Optimized BLT engine
  • Fast CAD & drawing operations
  • Source and destination transparency
• No-cost motion video:
  • Smooth scaled video at 30 fps
  • 64-step biliner filter
  • Hardware scaling up to full screen
  • YUV to RGB conversion
  • DirectDrawTM, DirectVideoTM TrueMotionTM, MPEG-1 and DCI support
  • Graphics + 24-bit video in 1MB buffer
• Integrated DAC and clock generator:
  • Pixel clock to 175 MHz
  • Gamma correction
• BetterHalfTM cost-saving technology
• VESA® standards support:
  • Configurable Advanced Feature Connector (VSVPC or VAFC)
  • Power management (DPMS)
  • Bi-directional monitor data (DDC-2B)
• High throughput PCI interface:
  • 66MHz/PCI 2.1 compliant
  • Zero wait state bursts
  • Efficient memory mapped addressing
• Fast 64-bit DRAM interface:
  • 400MB/second peak bandwidth
  • EDO and fast page DRAM
  • 1MB, 1.5MB, 2MB, 3MB, 4MB support
  • ×4, ×8, ×16 DRAM support
• Programmable resolution up to 1600x1200 in various color modes and memory configurations

Software Drivers:

• Microsoft® Windows 95TM
• Microsoft® Windows NTTM 4.0, 3.5x
• Microsoft DirectDrawTM & DirectVideoTM
• Microsoft WindowsTM 3.x with DCI
• Microsoft Video for Windows TM
• AutoDesk® ADI for AutoCAD®
• WordPerfect® 6.0
• OS/2TM Warp, 2.11, 2.1
• Linux
• SCO Open DesktopTM