This is a basic machine language interpreter based on the little man computer. It has a slightly increased instruction set allowing for use of a non standard print character instruction.
XX signifies a memory address.
Available instructions:
| ML | ASM | Function |
|---|---|---|
| 901 | INP | Take 1 character of user input |
| 902 | OUT | Print the value stored in the accumulator |
| 903 | CHAROUT | Print the ASCII translation of the character stored in the accumulator |
| 5xx | LDA | Load location XX in memory the the accumulator |
| 3xx | STA | Store to location XX in memory from the accumulator |
| 1xx | ADD | Add XX in memory to the accumulator, result is stored in the accumulator |
| 2xx | SUB | Subtract XX in memory from the accumulator, result is stored in the accumulator |
| 8xx | BRP | Branch to XX if the accumulator is positive |
| 7xx | BRZ | Branch to XX if the accumulator is zero |
| 6xx | BRA | Branch to XX |
| 000 | HALT | Stop execution |
Available registers:
| Name | Register | Function |
|---|---|---|
| ACC | Accumulator | Stores the result of calculations, is also the target of out and charout |
| PC | Program Counter | Stores the memory address of the current instruction |