I/o terminal identification

Details I/o terminal identification I/o terminal identification

G - Physics

06

F

354/235

G06F 3/02 (2006.01)

Patent

CA 1108302

26260 I/O TERMINAL IDENTIFICATION Abstract of the Disclosure Control of the data format programmed into an interface means by a computer means is provided in response to the data format required by an I/O device. A register in the interface means is programmed to respond to only a first digital address from the computer means. A switching means having first and second positions is utilized to create "don't care" positions in a digital address from the computer means to the interface means. Because of the "don't care" positions in the digital address the register in the interface means will respond to a second digital address when the switching means is in the first position. The register will not respond to the second digital address when the switching means is in the second position. When the register responds to the second digital address then the computer programs the data format required by a first I/O means into the interface means. When the register does not respond to the second digital address then the computer programs the data format required by a second I/O means into the interface means. Thus, the position of the switching means determines the data format which will be programmed into the interface means.

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