Control device with mode flags for dedicating memory segments as

Details Control device with mode flags for dedicating memory segments as Control device with mode flags for dedicating memory segments as

1981-06-18

1984-05-29

Thomas, James D.

Boots, shoes, and leggings

36443104, 36443112, G06F 300, G06F 1300, G06F 1520

Patent

active

044518978

ABSTRACT:
An output control device for an internal combustion engine has a plurality of registers connected to a data bus. These registers comprise registers for holding output request time data specifying when the generation of output signals will be requested, and mask data specifying whether the registers are reserved for output operations or may be used as working RAM. Other registers are provided for holding output request time data, mask data, and channel designating data specifying the output channel on which output signals will be generated. Unloading of the data in these registers is performed by sequentially supplying gate switching control signals from a shifter to gates connected to these registers. The output request time data is compared with absolute time data from a timer by a comparator, and a coincidence signal indicating coincidence detection is applied to a mask gate together with the mask data. Whether to accept the coincidence data or not is determined according to the value of the mask data. Selectors are also included for determining whether to use the coincidence signal to request an output control signal at a predetermined output channel or at an output channel designated by the channel designating data. The output request data selected through these selectors is supplied to the corresponding output port through flip-flops.

REFERENCES:
patent: 3891974 (1975-06-01), Coulter et al.
patent: 4161787 (1979-07-01), Groves et al.
patent: 4255789 (1981-03-01), Hartford et al.
patent: 4259723 (1981-03-01), Fujisawa et al.
patent: 4296722 (1981-10-01), Furuhashi et al.
patent: 4298941 (1981-11-01), Furuhashi
patent: 4309759 (1982-01-01), Tokuda et al.

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