[net.micro.pc] Interrupt Routine File I/O Query

SK%MIT-MC@sri-unix.UUCP (06/19/84)

From:  Steven T. Kirsch <SK @ MIT-MC>

If you wanted to write a ctrl-PrtScrn function to dump to a file, how
can you do file I/O and return to the process?  From what I hear, when
you (try to) return, you end up hanging the system, etc. unless you do
something?