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SCU User's Manual / Chapter 4 DSP Control LOOP BOOTOM instruction
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Repeated processing judgment
- Operation content
- When the [LOP] flag is 0, nothing is done, otherwise the program counter is returned to [TOP].
- Descriptive formula
- label: BTM
- Instruction code
| 31 | 30 | 29 | 28 | 27 | | | | | | | | | | | | | | | | | | | | | | | | | | | 0 |
| 1 | 1 | 1 | 0 | 0 | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − |
- flag
- Only when LOP; LOP <> 0 (other than 0) is decremented. It ends when LOP = 0.
- remarks
List | ▲ Back | Next ▼ | Assembler LPS
1 step repeated execution
- Operation content
- The next step is repeated until the [LOP] register becomes 0.
- Descriptive formula
- label: LPS
- Instruction code
| 31 | 30 | 29 | 28 | 27 | | | | | | | | | | | | | | | | | | | | | | | | | | | 0 |
| 1 | 1 | 1 | 0 | 1 | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − |
- flag
- Only when LOP; LOP <> 0 (other than 0) is decremented. It ends when LOP = 0.
- remarks
- After the processing is completed, the PC will execute LOP + 1 times and exit.
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Copyright SEGA ENTERPRISES, LTD., 1997