Vxi/Vme Shared Ram Size; Shared Ram Pool - National Instruments MXI Series Getting Started

Note When the Address Space field is in the default setting of A16 only, this field is
ignored.
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VXI/VME Shared RAM Size

This field indicates the amount of RAM (in bytes) that is shared in either
A24 or A32 space. This determines the total shared RAM size, which is
then divided into two equal halves that you can set up independently of
one another.

Shared RAM Pool

This field indicates the size of memory (in kilobytes) that is allocated at
startup. This memory is used by the lower/upper half window when the
Memory Select control—accessible through the Advanced popup
field—is set to System memory.
Memory Range
0 to 65535 KB
The following table indicates how the Shared RAM Pool relates to the
VXI Shared RAM Size depending on the setting of the Memory Select
control for the upper and lower half windows.
Lower Half
Window
System memory
System memory
Onboard memory
Onboard memory
The shared RAM pool is used by
information on the
VXImemAlloc()
Manual and the NI-VXI Programmer Reference Manual.
Chapter 6
Upper Half
Window
System memory
Onboard memory
System memory
Onboard memory
VXImemAlloc()
function, refer to the NI-VXI User
6-7
NI-VXI Configuration Utility
Default Value
0 KB
Shared RAM Pool
(Window)
Equal to VXI/VME
Shared RAM Size
Half the VXI/VME
Shared RAM Size
Half the VXI/VME
Shared RAM Size
0
function calls. For
PCI-MXI-2 for Linux