Signal generator for interfacing digital computer to a plurality

Details Signal generator for interfacing digital computer to a plurality Signal generator for interfacing digital computer to a plurality

1984-06-11

1985-08-13

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 304, G06F 1300

Patent

active

045354030

ABSTRACT:
A signal generator for generating signals to control a plurality of devices includes a digital computer and a control interface apparatus. The plurality of devices to be controlled is connected in use to the control interface apparatus. The computer has peripheral device select lines, output control lines, and a data output bus. The control interface apparatus is connected to one of the peripheral device select lines, and while it is enabled by that select line it decodes a device address on the data output bus under the control of one of the output control lines so as to select one of the plurality of devices connected to the interface apparatus, the number of the plurality of devices connected to the interface apparatus thus being limited only by the capacity of the data output bus. The selected one of the plurality of devices can then be controlled during a following period of enablement of the interface apparatus by further data on the data output bus under the control of a further one of the output control lines. An intermediate period of enablement of the interface apparatus can be used to select an area within the selected one of the plurality of devices, prior to control of that area, by means of an area address on the data output bus under the control of yet a further one of the output control lines.

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