6. Advanced configuration
Barco – TransForm A - Workstation for Windows – DOC-3266-2 – Revision 16 – August 2007
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6-5
As default the Barco projection cubes and graphic channels are assigned in columns from top to bottom starting
with the left column as shown in
. This assignment may be changed for some reason. E. g., it may be
advantageous to change the order thus, that the channels are assigned in rows instead of columns as shown in
. The following table lists some examples:
arrangement
x×y
Assigning cubes and channels in columns
Assigning cubes and channels in rows
4×1
00010203
00010203
2×2
00010203
00020103
3×2
000102030405
000301040205
2×3
000102030405
000204010305
4×2
0001020304050607
0004010502060307
Table 6-4
Please, refer to section
3.5.3 Configuring the display wall
for more details.
MappingCache
The amount of memory available for PCI mapping cache is stored in the
MappingCache
in the registry.
Name
MappingCache
Typ
DWORD
Values
4..64
Default
64
Effective
after rebooting
Table 6-5
The value is specified in Megabytes. Each UGX or AGX
G
RAPHIC
C
ARD
requires 16 KB non-shared system space and
16 MB shareable system space. The shareable 16 MB are made visible to the CPU through the mapping windows
reserved as specified by the MappingCache registry setting.
If other drivers need a lot of system pages or if they are forced to do so by applications there are two possibili-
ties to make the necessary space available.
On the one hand you can change the set value for the system pages to a sufficient large value. The system pages
entry can be found in the registry under the following path:
HKEY-LOCAL-MACHINE
\System
\CurrentControlSet
\Control
\Session Manager
\Memory Management
\SystemPages
The table below list depending on the operation system the amount of a sufficiently large value for the system
pages.
Operating System
System Pages
Size in MB
Windows 2000
50000
195
Windows XP
110000
429
Table 6-6
On the other hand you can decrease the value for the MappingCache. This can lead to a small loss of perform-
ance for some graphic operations.