System for calculating branch destination address based upon add

Details System for calculating branch destination address based upon add System for calculating branch destination address based upon add

1989-04-18

1992-08-25

Lee, Thomas C.

Boots, shoes, and leggings

364DIG1, 3642451, 364245, 3642452, 3642549, 3642551, 3642548, 364247, G06F 1200, G06F 1202

Patent

active

051426307

ABSTRACT:
In a data processing unit having an instruction precontrol function, when an instruction for new address mode setting, branch address generation and branching is decoded in a preexecution cycle of the instruction, a branch destination address is calculated by using an address mode of the branch destination address represented by a specific bit in operand data of the instruction, as the address mode, and the branch destination instruction is fetched based on the calculated address.

REFERENCES:
patent: 3725868 (1973-04-01), Malmer et al.
patent: 3818460 (1974-06-01), Beard et al.
patent: 4616313 (1986-10-01), Aoyagi
patent: 4752873 (1988-06-01), Shonai et al.
patent: 4758949 (1988-07-01), Wada et al.
patent: 4868740 (1989-09-01), Kagimasa et al.
patent: 4979098 (1990-12-01), Baum et al.

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