A SERVICE OF

logo

47
5.2) Interrupt functions
The Opto-Isolator lines are connected to a latch and fed into the IRQ line if normal or
Shared Interrupt Mode (or both) is used. An ISR can be installed using the EDR driver
functions to service these lines when pulses toggles the Opto Isolator line + Opto-Isolator
Line Return. Note that all the lines are latched. If any of the opto-isolator lines are
vectored to the PC’s Interrupt System, the latches should be cleared in the ISR.
These functions are callable from virtually any programming language. See the EDR
Software Developers Kit User Manual.