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<p>A unique family of high-speed, microprogrammable asynchronous controller (MAC) modules is described in this correspondence. Each MAC module consists of two fundamental mode machines that communicate by means of a handshake interface that permits it to be driven by any programmable logic device including ROM's. Any state machine controller designed with a MAC module will operate free of critical races, essential hazards and output race glitches, and will have static hazard-free state variables. A multiplicity of programmable logic devices can be used to drive one or more MAC modules to achieve complex, but reliable, asynchronous, time-shared and/or parallel processing of data. Individual MAC modules having state variables numbering l,m,n,...can be cascaded to produce an available system state capacity of 2/sup lspl times/2/sup mspl times/2/sup nspl times/...states with up to (l+m+n+...)-way transition capability, all without compromising speed or reliability.</p>
logic arrays; finite state machines; finite automata; logic design; sequential circuits; microprogrammable asynchronous controller modules; high-speed; programmable logic devices; asynchronous controllers; asynchronous modules; asynchronous sequencers; asynchronous state machines; high-speed controllers; modules; programmable controllers; sequencers.

J. Snodderley, R. Klaus and R. Tinder, "High-Speed Microprogrammable Asynchronous Controller Modules," in IEEE Transactions on Computers, vol. 43, no. , pp. 1226-1232, 1994.
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