Conditional transfer control circuit

Details Conditional transfer control circuit Conditional transfer control circuit

1979-09-21

1982-01-12

Thesz, Joseph M.

Boots, shoes, and leggings

G06F 1300

Patent

active

043108814

ABSTRACT:
In a conditional transfer control circuit (10) for a controller (11) arranged for fetching instructions from a sequence of addresses wherein a list of instructions is stored, there is a circuit (25) for producing a first signal (C) representing a true or false condition resulting from executing an instruction in the list of instructions and a circuit (IRO) for producing applying a second signal (on lead 32 or 72) indicating whether control is determined by the first signal being true or by the first signal being false. An EXCLUSIVE NOR (or EXCLUSIVE OR) gate (30 or 70), responsive to the first and second signals, produces a condition transfer signal (on lead 18) that causes the controller to fetch a next subsequent instruction from an address other than the next subsequent address in the sequence of addresses wherein the list of instructions is stored.

REFERENCES:
patent: 3689895 (1972-09-01), Kitamura
patent: 3978453 (1976-08-01), Garziera
patent: 3980991 (1976-09-01), Mercurio

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