Instruction set
It looks like instructions are 8 bytes long. Roughly speaking - first 4 bytes contain opcode and addressing mode. Second 4 bytes contain operands encoding.
0x00000000 - 0x08000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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3 |
2 |
1 |
0
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| 0 |
0 |
0 |
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0 |
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| 7 |
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0
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| ? |
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0x08000000 - 0x10000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
0 |
0 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| ? |
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0x10000000 - 0x18000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
0 |
1 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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3 |
2 |
1 |
0
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| ? |
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0x18000000 - 0x20000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
0 |
1 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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3 |
2 |
1 |
0
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| ? |
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0x20000000 - 0x28000000
| 7 |
6 |
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4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
1 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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0x28000000 - 0x30000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
1 |
0 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
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0 |
0 |
0 |
0
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| 7 |
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3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
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0
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| 7 |
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0
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0x30000000 - 0x38000000
| 7 |
6 |
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4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
1 |
1 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
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0
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| 7 |
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1 |
0
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0x38000000 - 0x40000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
0 |
1 |
1 |
1 |
0 |
0 |
0
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| 7 |
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3 |
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0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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1 |
0
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| 0 |
0 |
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0
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| 7 |
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0
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0x40000000 - 0x48000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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3 |
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1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
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0
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| 7 |
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2 |
1 |
0
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0x48000000 - 0x50000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
0 |
0 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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4 |
3 |
2 |
1 |
0
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| 0 |
0 |
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0 |
0 |
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0
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| 7 |
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1 |
0
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0x50000000 - 0x58000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
0 |
1 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| 0 |
0 |
0 |
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0 |
0 |
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0
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| 7 |
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1 |
0
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0x58000000 - 0x60000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
0 |
1 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
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0
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| 7 |
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2 |
1 |
0
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0x60000000 - 0x68000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
1 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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2 |
1 |
0
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| ? |
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0x68000000 - 0x70000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
1 |
0 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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1 |
0
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| ? |
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0x70000000 - 0x78000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
1 |
1 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| ? |
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0x78000000 - 0x80000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 0 |
1 |
1 |
1 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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2 |
1 |
0
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| ? |
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0x80000000 - 0x88000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 1 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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1 |
0
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| ? |
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?
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0x88000000 - 0x90000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 1 |
0 |
0 |
0 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| ? |
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?
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0x90000000 - 0x98000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 1 |
0 |
0 |
1 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| ? |
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0x98000000 - 0xA0000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 1 |
0 |
0 |
1 |
1 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
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3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| ? |
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0xA0000000 - 0xA8000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
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| 1 |
0 |
1 |
0 |
0 |
0 |
0 |
0
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| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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3 |
2 |
1 |
0
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| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0
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| 7 |
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2 |
1 |
0
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| ? |
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0xA8000000 - 0xB0000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
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| opcode1 |
|
| 1 |
0 |
1 |
0 |
1 |
0 |
0 |
0
|
0xB0000000 - 0xB8000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
0 |
1 |
1 |
0 |
0 |
0 |
0
|
0xB8000000 - 0xC0000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
0 |
1 |
1 |
1 |
0 |
0 |
0
|
0xC0000000 - 0xC8000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
0 |
0 |
0 |
0 |
0 |
0
|
0xC8000000 - 0xD0000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
0 |
0 |
1 |
0 |
0 |
0
|
0xD0000000 - 0xD8000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
0 |
1 |
0 |
0 |
0 |
0
|
0xD8000000 - 0xE0000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
0 |
1 |
1 |
0 |
0 |
0
|
0xE0000000 - 0xE8000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
1 |
0 |
0 |
0 |
0 |
0
|
0xE8000000 - 0xF0000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
1 |
0 |
1 |
0 |
0 |
0
|
0xF0000000 - 0xF8000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
1 |
1 |
0 |
0 |
0 |
0
|
0xF8000000 - 0xFF000000
| 7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| opcode1 |
|
| 1 |
1 |
1 |
1 |
1 |
0 |
0 |
0
|