Subroutine link control system and apparatus therefor in a data

Details Subroutine link control system and apparatus therefor in a data Subroutine link control system and apparatus therefor in a data

1984-08-30

1988-03-08

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 930, G06F 1200

Patent

active

047302488

ABSTRACT:
A data processing apparatus having a subroutine processing function which saves and resumes the contents of general registers at the time of shifting into a subroutine or at the time of resume processing. Three layers of general registers are provided, each layer being comprised of a group of registers of a plurality of stages. The layers are connected in the form of a ring while coupling the corresponding registers of neighboring layers for each bit, so that the data can be batchwisely transferred in both directions. When shifted into a subroutine, the contents of a group of registers of the layer that had been used before the shifting are batchwisely transferred to a group of registers of a neighboring layers. The subroutine to which the operation is shifted uses the layer to which the data are transferred.

REFERENCES:
patent: 3348211 (1967-10-01), Ghiron
patent: 4041462 (1977-09-01), Davis et al.

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