User:I am islptng/SingleOperandAssembly
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Instructions
The RISC has 16 instructions, each of them has exactly 1 operand.
The computer has a register to store the result of calculations.
| Hex | Keyword | Meaning |
|---|---|---|
| 0 | imd x | reg = x |
| 1 | jmp x | pc = x |
| 2 | jnz x | if(reg != 0) pc = x |
| 3 | jlz x | if(reg < 0) pc = x |
| 4 | get x | reg = ram[x] |
| 5 | put x | ram[x] = reg |
| 6 | rget x | reg = ram[ram[x]] |
| 7 | rput x | ram[ram[x]] = reg |
| 8 | add x | reg += ram[x] |
| 9 | sub x | reg -= ram[x] |
| A | and x | reg &= ram[x] |
| B | or x | reg |= ram[x] |
| C | xor x | reg ^= ram[x] |
| D | rol x | (reg >> (8 - ram[x])) |
| E | shr x | reg >>= ram[x] (logic) |
| F | ashr x | reg >>= ram[x] (arithmetic) |