User`s guide

46 ? PCIS-DASK Utilities
[PciUtil in Windows 98]
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.