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Component Descriptions
The IO Expansion Board provides PCI and ISA expansion slots. It also has the graphics, non-RAID
SCSI, mouse, keyboard, serial port, parallel port, and floppy controllers, as well as the PC
compatibility hardware (BIOS PROM, NVRAM, RTC) and interrupt logic.
Expansion Connector
Graphics
Accelerator
SCSI Controller
PCI-to-ISA
Bridge
PCI-to-PCI
Bridge
WRAM
Super I/O
Controller
Palette
DAC
Lithium Battery
Graphics Accelerator
The graphics accelerator (Matrox MGA-2064W) interfaces to the system board through the PCI bus.
This accelerator supports all of the standard VGA graphics modes in addition to native modes capable
of resolutions up to 1600 x 1200. The frame buffer interface is 64 bits wide and is clocked at 100
MHz. Color depths of 4, 8, 16, 24, and 32 bits are supported, allowing a resolution of 1280 x 1024 (24
bit color depth) in only 4 MB of frame buffer memory. Features such as bit block transfer (BitBlt),
Line Draws, and Fills provide hardware acceleration for Windows. Video playback is accelerated
through scaling and YUV to RGB color space conversion.
StudioZ RAX uses the MGA 2064W only as a video boot device. Graphics capabilities for StudioZ
RAX are handled by the Z10T card (MESAM96) and the StudioZ SDI card (MSMT297). Refer to the
appropriate documentation for descriptions of those graphics cards.
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