Interface control system for high speed processing based on comp

Details Interface control system for high speed processing based on comp Interface control system for high speed processing based on comp

1981-07-30

1985-05-07

Shaw, Gareth D.

Boots, shoes, and leggings

364400, G06F 100

Patent

active

045162026

ABSTRACT:
An interface control system between a plurality of devices, such as a channel and an I/O device, includes sampling means for high speed sampling input control signals on an interface, a compare circuit for comparing a current sampled value sampled by the sampling means with an expected value for the input control signal previously prepared in the system and with a previously sampled value, respectively, to produce a compare equal signal when the sampled value is equal to the expected value, a matrix logic circuit responsive to the compare equal signal to set an output signal line corresponding to the expected value and an expected value for next sampling, and a circuit to produce a signal indicating an error condition or an exceptional condition when the sampled value is not equal to the expected value and the previous sampled value, to activate another logic circuit.

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Meltzer et al., (Abd-Alla and Meltzer), Principles of Digital Computer Design, p. 201, 1976.

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