| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine characteristic in a game control.SOLUTION: The game machine includes a CPU for performing a game control. The CPU, if receiving a first command, performs a calculation to subtract 0 from a first register value, and if a result of the calculation is not 0, clears a first zero flag and a second zero flag, performing an operation to jump to a jump target address. On the other hand, if a result of the calculation is 0, it is so configured that the CPU sets the two zero flags and to perform a command subsequent to the first command. Also, the CPU, if receiving a second command, performs a calculation to subtract 0 from a second register value, and if a result of the calculation is not 0, clears the two zero flags, performing an operation to return to processing of a call source. On the other hand, if a result of the calculation is 0, it is so configured that the CPU sets the two zero flags and to perform a command subsequent to the second command. The second zero flag is disposed adjacent to the first zero flag in a flag register.SELECTED DRAWING: Figure 234 |
