Daisy chaining of device interrupts in a cathode ray tube...

Details Daisy chaining of device interrupts in a cathode ray tube... Daisy chaining of device interrupts in a cathode ray tube...

G - Physics

06

F

375/46, 354/230.

G06F 3/153 (2006.01) G06F 13/34 (2006.01) G09G 1/16 (2006.01)

Patent

CA 1134512

ABSTRACT A microprocessor controlled cathode ray tube display system has a plurality of peripheral devices all connected in common to a system bus. Apparatus in each peripheral device activates a single interrupt signal. A single acknowledge response signal to all the devices enables the interrupting device to place its address signals on the system bus thereby initiating a firmware routine for making the interrupting device operative with the system.

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