User`s guide

12 • 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.