User`s guide

PCIS-DASK Utilities • 13
[PciUtil in Windows 2000]
This utility is used to set/modify the allocated buffer sizes of AI, AO, DI and DO.
The allocated buffer sizes of AI, AO, DI, DO represent the sizes of contiguous
Initially Allocated memory for continuous analog input, analog output, digital
input, digital output respectively. Its unit is page KB, i.e. 1024 bytes. Device
driver will try to allocate these sizes of memory at system startup time. The
size of initially allocated memory is the maximum memory size that DMA or
Interrupt transfer can be performed. It will induce an unexpected result in that
DMA or Interrupt transfer performed exceeds the initially allocated size.
The “Driver Configuration” window is shown as below.
Using PciUtil to change the buffer allocated settings of one of the PCIS-DASK
drivers, select the driver from the Card Type combo box.
Inside the allocated buffer size fields of AI, AO, DI and DO are the originally set
values. Type the value in the box corresponding to AI, AO, DI, or DO according
to the requirement of your applications, and then click “Apply” button.