Mostek 5065 (original) (raw)

The Mostek 5065, or MK5065 for short, is an 8-bit microprocessor introduced by Mostek in early 1974. The design was originally developed by Motorola for use in an Olivetti electronic calculator, and they licensed it to Mostek for use in non-calculator roles. It featured three sets of processor registers allowing it to switch to an interrupt handler in a single cycle, and a wait-for-data mode that aided direct memory access.