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SCU User's Manual / Chapter 4 DSP Control Arithmetic instructions
X-Bus control command
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X-Bus No Operation
- Operation content
- The X-Bus command is unprocessed.
- Descriptive formula
- label: NOP
- Instruction code
| 31 | 30 | | | | | twenty five | twenty four | twenty three | | | | | | | | | | | | | | | | | | | | | | | 0 |
| 0 | 0 | − | − | − | − | 0 | 0 | 0 | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − |
- flag
- It doesn't change.
- remarks
- none.
List | ▲ Back | Next ▼ | Assembler MOV [s], X
Transfer (Memory → [RX])
- Operation content
- Data is transferred from the data RAM at the address indicated by [CTx (x = 0 to 3)] to [RX].
- Descriptive formula
- label: MOV [Source RAM], X
- Source RAM = M0 to M3, MC0 to MC3
- Instruction code
| 31 | 30 | | | | | twenty five | twenty four | twenty three | twenty two | twenty one | 20 | | | | | | | | | | | | | | | | | | | | 0 |
|---|
| 0 | 0 | − | − | − | − | 1 | 0 | 0 | x | x | x | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − |
| Bit data | Addition mode choice |
|---|
| bit22 | bit21 | bit20 |
|---|
| 0 | 0 | 0 | DATA RAM0 → [RX] |
| 0 | 0 | 1 | DATA RAM1 → [RX] |
| 0 | 1 | 0 | DATA RAM2 → [RX] |
| 0 | 1 | 1 | DATA RAM3 → [RX] |
| 1 | 0 | 0 | DATA RAM0 → [RX], CT0 ++ |
| 1 | 0 | 1 | DATA RAM1 → [RX], CT1 ++ |
| 1 | 1 | 0 | DATA RAM2 → [RX], CT2 ++ |
| 1 | 1 | 1 | DATA RAM3 → [RX], CT3 ++ |
- flag
- RX; It will be the data selected in the options.
- It is incremented only when CTx (x = 0 to 3); b22 = 1. It does not change when b22 = 0.
- remarks
- [Mx (x = 0 to 3)] specifies DATA RAMx (x0 to 3).
- [MCx (x = 0 to 3)] specifies DATA RAMx (x0 to 3), and after transfer, increments [CTx (x = 0 to 3)].
List | ▲ Back | Next ▼ | Assembler MOV MUL, P
Transfer (MULTIPLIER → [Pn])
- Operation content
- MULTIPLIER Transfers the upper 16 bits of 48 bits to [PH] and the lower 32 bits to [PL].
- Descriptive formula
- label: MOV MUL, P
- Instruction code
| 31 | 30 | | | | | twenty five | twenty four | twenty three | | | | | | | | | | | | | | | | | | | | | | | 0 |
| 0 | 0 | − | − | − | − | 0 | 1 | 0 | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − |
- flag
- PH; MULTIPLIER Higher 16-bit data.
- PL; MULTIPLIER The lower 32 bits of data.
- remarks
- none.
List | ▲ Back | Next ▼ | Assembler MOV [s], P
Transfer (Memory → [PH])
- Operation content
- Data is transferred from the data RAM at the address indicated by [CTx (x = 0 to 3)] to [PL].
- Descriptive formula
- label: MOV [Source RAM], P
- Source RAM = M0 to M3, MC0 to MC3
- Instruction code
| 31 | 30 | | | | | twenty five | twenty four | twenty three | twenty two | twenty one | 20 | | | | | | | | | | | | | | | | | | | | 0 |
|---|
| 0 | 0 | − | − | − | − | 0 | 1 | 1 | x | x | x | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − | − |
| Bit data | Addition mode choice |
|---|
| bit22 | bit21 | bit20 |
|---|
| 0 | 0 | 0 | DATA RAM0 → [PL] |
| 0 | 0 | 1 | DATA RAM1 → [PL] |
| 0 | 1 | 0 | DATA RAM2 → [PL] |
| 0 | 1 | 1 | DATA RAM3 → [PL] |
| 1 | 0 | 0 | DATA RAM0 → [PL], CT0 ++ |
| 1 | 0 | 1 | DATA RAM1 → [PL], CT1 ++ |
| 1 | 1 | 0 | DATA RAM2 → [PL], CT2 ++ |
| 1 | 1 | 1 | DATA RAM3 → [PL], CT3 ++ |
- flag
- PL; It will be the data selected in the selection.
- PH; It changes with the sign extension of [PL]. To do.
- It is incremented only when CTx (x = 0 to 3); b22 = 1. It does not change when b22 = 0.
- remarks
- [Mx (x = 0 to 3)] specifies DATA RAMx (x0 to 3).
- [MCx (x = 0 to 3)] specifies DATA RAMx (x0 to 3), and after transfer, increments [CTx (x = 0 to 3)].
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★ HARDWARE Manual ★ SCU User's Manual
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