TGaArdvark@aol.com wrote: > > Not quite, disabling interrupts doesn't disable _getkey. In an asm prog, > > _getkey isn't called unless you call it._getkey is a call, not an interrupt. > > Disable the interrupts and then call _getkey and see what happens. I don't know what you want to happen, but it looks like _getkey enables the interrupts if you call it with the interrupts disabled.