Texture Memory; Geometry Accelerator Support - Intergraph RealiZm II Graphics Hardware User's Manual

Texture Memory

A ZX13, ZX25, or VX25 card provides texture memory by adding two dual inline memory
module (DIMM) sockets. Both DIMM sockets must be populated with the same density
DIMM. A slide-out cover provides easy access to the texture memory sockets. Although the
VX25 card supports 4 MB of texture memory, 16 MB or larger is recommended for maximum
performance.
The VX113 or VX113 AGP cards provide texture memory by including 16 MB of memory on
the card. No other texture memory options are available.
Texture
Memory
4 MB
16 MB
32 MB
64 MB

Geometry Accelerator Support

An optional Geometry Accelerator card provides lighting and transformation operations for
RealiZm II cards, to offload the system's processors and provide for higher benchmark and
application performance.
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The Geometry Accelerator card for VX113 and VX113 AGP uses twelve digital signal
processors (DSPs).
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The Geometry Accelerator card for ZX13, VX25, and ZX25 uses six DSPs.
The Geometry Accelerator card sends data to the RealiZm II cards via a dedicated vertex data
bus, which has the following features:
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Dedicated 60-pin ribbon cable interface
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Peak transfer rate of 132 MB per second
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Up to three RealiZm II cards can be interfaced to a single Geometry Accelerator card
Bits Per Texel
(RGBA)
Total Texels
32 1 MTexels
32 4 MTexels
32 8 MTexels
32 16 MTexels
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