Fig. 10-1: Synchronous And Asynchronous Mode; Fig. 10-2: Synchronous And Asynchronous Mode - Addi-Data APCI-1710 Technical Description

Standard software

Fig. 10-1: Synchronous and asynchronous mode

Fig. 10-2: Synchronous and asynchronous mode

ADVANTAGES
LIMITS
ADVANTAGES
LIMITS
72
SYNCHRONOUS MODE
The user interrupt routine is called directly from the interrupt routine
of the driver (ring 0). The time between interrupt and user interrupt
routine is reduced.
A debug of the user interrupt routine is not possible.
The user interrupt routine cannot call the Windows API functions.
The user interrupt routine cannot call the functions, which have
access to the shared variable. However, the user can use a shared
memory.
The user interrupt routine can only call the functions of the xPCI-
1710 device driver, which have the following extension:
"i_APCI1710_KRNL_XXX"
This mode can not be used under Visual Basic.
ASYNCHRONOUS MODE
A debug of the user interrupt routine is possible.
The user interrupt routine can call the API functions.
The user interrupt routine can call the functions, which have access to
the shared variable.
The user interrupt routine can call all functions of the xPCI-1710 device
driver. Syntax: "i_APCI1710_XXX"
The code of the user interrupt routine is called from the Interrupt Thread
of the driver (ring 3). The time between interrupt and user interrupt
routine is longer.
APCI-1710