Boots – shoes – and leggings
Patent
1993-06-17
1995-06-27
Bowler, Alyssa H.
Boots, shoes, and leggings
395375, 3642616, 3642624, 364DIG1, G06F 900, G06F 938
Patent
active
054288070
ABSTRACT:
There is provided a mechanism for propagating exception conditions in a computer system when instructions are subject to exception conditions. The apparatus includes a set of data registers for storing data manipulated by the instructions of the computer system, and a set of state registers for storing speculative states of data manipulated by the instructions, there being one state register associated with each data register. Furthermore, the apparatus includes a logic circuit, coupled to the set of state registers, for propagating the states from a source one of the state registers to a destination one of the state registers, if data stored in an associated source one of the data registers are used as a source for an associated destination one of data registers, and if data stored in the source data register were manipulated by a particular instruction subject to an exception condition.
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Adler Michael C.
Emer Joel S.
Lowny P. Geoffrey
McKeen Francis X.
Nix Robert P.
Bowler Alyssa H.
Brinkman Dirk
Digital Equipment Corporation
Fisher Arthur W.
Hudgens Ronald C.
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