Apparatus and method for emulating a computer instruction set using a jump table in the host computer
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United States of America Patent
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Apr 11, 1995
Grant Date -
N/A
app pub date -
Nov 23, 1988
filing date -
Mar 24, 1987
priority date (Note) -
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Abstract
Data processing means adapted to be controlled by sequential instructions, a substantial number of which comprise an operation code selected from a set of n such codes and a qualifying code selected from a set of m such codes, the data processing means comprising a store having approximately n times m locations with each location corresponding to a consistent combination of operating code and qualifying code and holding a series of instructions corresponding to the said operating code and qualifying code. The qualifying code may be the addressing mode and a jump table of 256.times.256 entries may be employed to access the instruction series.
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