Stored program electronic computer

Details Stored program electronic computer Stored program electronic computer

1974-04-11

1978-03-14

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 906

Patent

active

040794474

ABSTRACT:
A method and apparatus for use in electronic computer for altering a stored program. The deletion of an instruction from a main memory storing it results in a compression of the program that included the deleted instruction in order to conserve memory space. The insertion of an instruction in a program stored in a main memory results in the shifting of subsequent instructions stored therein. The memory may be divided into arbitrary sections in response to an instruction enabling the search of a particular subroutine to be shortened. The subroutines in the program which can be reached each have a corresponding program level register. At each subroutine jump instruction the contents of the program level registers are shifted up in order to save the current program level register contents.

REFERENCES:
patent: 3348211 (1967-10-01), Ghiron
patent: 3544975 (1970-12-01), Hunter
patent: 3568158 (1971-03-01), Haller et al.
patent: 3585600 (1971-06-01), Saltini
patent: 3660825 (1972-05-01), De Sandre
patent: 3693162 (1972-09-01), Spangler

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