This is a implementation of the random-access machine based on the model described in https://github.com/vbrandl/RandomAccessMachine but implemented in rust. Data is stored in 16bit integer numbers and a address space of 256 fields.
The accumulator is stored in a own register instead of data[0]
Comments are introduced by ;
All instructions follow the pattern
<operator> <operand>
| Instruction | Opcode | Description |
|---|---|---|
| ADD | 0x01 | akku += data[<operand>] |
| SUB | 0x02 | akku -= data[<operand>] |
| MUL | 0x03 | akku *= data[<operand>] |
| DIV | 0x04 | akku /= data[<operand>] |
| LDA | 0x05 | akku = data[<operand>] |
| LDK | 0x06 | akku = <operand> |
| STA | 0x07 | data[<operand>] = akku |
| INP | 0x08 | read a number from stdin to data[<operand>] |
| OUT | 0x09 | print data[<operand>] to stdout |
| HLT | 0x0A | halt execution and use <operand> as exitcode |
| JMP | 0x0B | PC = <operand> |
| JEZ | 0x0C | if (akku == 0) PC = <operand> |
| JNE | 0x0D | if (akku != 0) PC = <operand> |
| JLZ | 0x0E | if (akku < 0) PC = <operand> |
| JLE | 0x0F | if (akku <= 0) PC = <operand> |
| JGZ | 0x10 | if (akku > 0) PC = <operand> |
| JGE | 0x11 | if (akku >= 0) PC = <operand> |