Xycom XVME-654, Manual

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Chapter 1 – Introduction
1-2
Video Controller
The PCI bus video controller features a 64-bit graphics engine, with 24-bit RAMDAC
for true color support. Resolutions up to 1024 x 768 with 256 colors are supported. It
also incorporates the latest Green PC monitor plug-and-play features for power savings.
The video controller offers hardware-assisted video playback for Indeo™, Cinepak™,
and MPEG-1. Refer to Appendix C for information on the Super VGA modes supported.
Fast IDE controller
The high-speed local bus IDE controller supports programmed I/O (PIO) modes 0-4. It
also provides 4 x 32-bit read-ahead buffer and 4 x 32-bit write-post buffer support to
enhance IDE performance.
Caution
The IDE controller supports enhanced PIO modes, which reduce the cycle times for
16-bit data transfers to the hard drive. Check with your drive manual to see if the
drive you are using supports these modes. The higher the PIO mode, the shorter the
cycle time. As the IDE cable length increases, this reduced cycle time can lead to
erratic operation. As a result, it is in your best interest to keep the IDE cable as short
as possible.
The PIO modes are selected in the BIOS setup (refer to Chapter 3). The
Autoconfigure will attempt to classify the drive connected if the drive supports the
auto ID command. If you experience problems, change the PIO to standard.
VMEbus Interface
The XVME-654 uses the PCI local bus to interface to the VMEbus. The VMEbus
interface supports full DMA to/from the VMEbus, integral FIFOs for posted writes,
block mode transfers, and read-modify-write operations. The interface contains four
master and four slave images that can be programmed in a variety of modes to allow the
VMEbus to be mapped into the XVME-654 local memory. This makes it easy to
configure VMEbus resources in protected and real-mode programs.
Expansion Options
PC/104 and PCI Mezzanine Card (PMC) expansion is available on the XVME-654
through the XVME-976 module. The XVME-976 offers PMC and PC/104 sites,
allowing easy integration of PC/AT-compatible modules in your VMEbus system.
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