Boots – shoes – and leggings
Patent
1975-04-14
1978-04-11
Thomas, James D.
Boots, shoes, and leggings
G06F 1520, G06F 100, G06F 916, G06F 1300
Patent
active
040842355
ABSTRACT:
A processing unit includes emulation apparatus which operates to execute instructions of a target system, one of a plurality of ways depending upon the options and features of the target system being emulated. The options, features and characteristics of the target system for which the program was originated is defined by the different bits of an option mask word stored within the emulation apparatus. Initially, upon switching to an emulation mode of operation, the emulation apparatus under microprogram control is operative to store signal representations of the option mask word in one of its storage registers. The signals from the stored option mask word are applied to different portions of the emulation apparatus for conditioning the apparatus to execute target system program instructions in accordance with the structural characteristics of the target system for which the program was originated.
REFERENCES:
patent: 3300764 (1967-01-01), Doelz
patent: 3374466 (1968-03-01), Hanf
patent: 3440612 (1969-04-01), Womack
patent: 3543245 (1970-11-01), Nutter
patent: 3544969 (1970-12-01), Rakoczi
patent: 3698007 (1972-10-01), Malcolm
Hirtle Allen C.
O'Keefe David B.
Driscoll Faith F.
Honeywell Information Systems Inc.
Prasinos Nicholas
Reiling Ronald T.
Thomas James D.
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