An internal switch setting that controls whether an interrupt can be processed or not. The mask is a bit that is turned on and off by the program.
"interrupt mask." YourDictionary, n.d. Web. 18 August 2018. <http://www.yourdictionary.com/interrupt-mask>.
interrupt mask. (n.d.). Retrieved August 18th, 2018, from http://www.yourdictionary.com/interrupt-mask