Hcrx Configuration Hints - HP b2600 Administration Manual
Hp b2600: supplementary guide
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Also See for b2600:
- Reference manual (486 pages) ,
- Technical reference (206 pages) ,
- Supplementary manual (108 pages)
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The modes are set from the Boot-Admin at bootup time by selecting from the menu of options a
configuration that supports double-buffer or not. From that point on (without rebooting) the server will
use the selected mode.
Eight-plane mode is compatible with the Integrated Color Graphics device. It has eight image planes and
uses only software double-buffering.
Double-Buffer mode is compatible with the HCRX-8 device. This mode requires an optional memory
daughter card. If the daughter card is installed, selecting this mode will result in eight overlay planes and
16 image planes (the same as HCRX-8 and HP VISUALIZE-8 devices). Double-Buffer mode allows the
use of hardware double-buffering.
HCRX Configuration Hints
HCRX-8[Z], HP [Dual] VISUALIZE-EG and HP VISUALIZE-8 Visuals and
Double-Buffer Support
The eight-plane HCRX-8[Z], HP [Dual] VISUALIZE-EG and HP VISUALIZE-8 are the first members
of the Series 700 graphics family whose overlay planes and image planes are both depth 8.
• There are two depth-8 PseudoColor visuals (one in the overlay planes, the other in the image
planes). There is also a depth-8 TrueColor visual in the image planes.
• The default visual (where the root window and default colormap reside) is in the overlay planes.
A DefaultVisual specification in a Screen Entry in the X*screens file may instead locate the
default visual in the Image Planes (see the X*screens File section, above).
• Fast 8/8 double-buffering (two hardware buffers) is supported in the depth-8 image planes, but
not in the overlays. The overlay planes support the slower virtual-memory-based double-
buffering.
Implications and Suggestions for HCRX-8[Z], HP [Dual] VISUALIZE-EG and HP
VISUALIZE-8
The default colormap cannot be used with a window in a non-default visual, even one of the same depth
as the default visual.
Before trying to use the default colormap in a depth-8 window, verify that the window is in the default
visual. If the window is not in the default visual, create a colormap in that visual. This process of
creating a non-default colormap is the same as the one used to create windows in depth-12 or depth-24
visuals.
If you have an application that assumes that the default colormap can be used with any depth-8 window
(even one in an image-plane visual) specify an image-plane visual as the default.
Unlike the CRX, the HCRX-8[Z]'s default visual the HP [Dual] VISUALIZE-EG's default visual and the
HP VISUALIZE-8's default visual do not have fast hardware double-buffering (but the image planes
do).
Page 60
Graphics Administration Guide for HP-UX 10.20
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