raymond@ptolemy.arc.nasa.gov (Eric A. Raymond) (03/15/89)
I seem to be having problems with the Keyboard interrupt (IRQ1) preempting the communication interrupts (IRQ3,4). For example, suppose we are getting a stream of data over the serial port and someone holds a key pressed. The key press will generate interrupts which preclude the handling of the serial interrupt (since it has a higher priority). This will lose data from the serial port until the key is released. If the serial interrupt was being processed (and it didn't disable the interrupts), then the serial interrupt will be preeempted after next instruction is complete. -- Eric A. Raymond (raymond@pluto.arc.nasa.gov) Nothing left to do but :-) :-) :-)