| Value | Meaning | 
|---|---|
| A0x00 | General Registers | 
| B0x01 | |
| C0x02 | |
| X0x03 | |
| Y0x04 | |
| Z0x05 | |
| I0x06 | |
| J0x07 | |
| Aptr0x08 | |
| Bptr0x09 | |
| Cptr0x0A | |
| Xptr0x0B | |
| Yptr0x0C | |
| Zptr0x0D | |
| Iptr0x0E | |
| Jptr0x0F | |
| Aptr_word0x10 | [register + next word] | 
| Bptr_word0x11 | |
| Cptr_word0x12 | |
| Xptr_word0x13 | |
| Yptr_word0x14 | |
| Zptr_word0x15 | |
| Iptr_word0x16 | |
| Jptr_word0x17 | |
| POP_PUSH0x18 | Stack | 
| PEEK0x19 | |
| PICK_word0x1a | [SP + next word] | 
| SP0x1b | Not general registers | 
| PC0x1c | Program Counter value | 
| EX0x1d | Excess register value | 
| NWord_ptr0x1e | [next word] | 
| NWord0x1f | next_word literal | 
| Literal0x20 | literal from -1 to 30 (only if is 'a' operator) | 
Operand type/value