| 摘要 |
<p>A data processing means (10) is adapted to be controlled by sequential instructions (14), 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. A store (18) having approximately n times m locations holds a series of instructions (20, 26) corresponding to a consistent combination of operating code and qualifying code. The qualifying code may be the addressing mode and a jump table (18) of 256 x 256 entries may be employed to access the instruction series (20, 26). This arrangement can be used to emulate the Intel 8088 microprocessor instruction set on a Motorola 68020 chip.</p> |
