Editing Programmable logic array (section)

== Applications ==
One application of a PLA is to implement the control over a [[datapath]]. It defines various states in an instruction set, and produces the next state (by conditional branching). [e.g. if the machine is in state 2, and will go to state 4 if the instruction contains an immediate field; then the PLA should define the actions of the control in state 2, will set the next state to be 4 if the instruction contains an immediate field, and will define the actions of the control in state 4]. Programmable logic arrays should correspond to a [[state diagram]] for the system.

The earliest [[Commodore 64]] home computers released in 1982 (into early 1983) initially used a programmed Signetics 82S100 PLA, but as the demand increased, MOS Technology / Commodore Semiconductor Group began producing a mask-programmed PLA, which bore part number 906114-01.<ref>[http://www.arcadecomponents.com/catalog/item/3054735/2582640.htm arcadecomponents.com - Commodore 906114-01 64 PLA IC]</ref>