461 B
461 B
ISA
Most instructions follow this format
| 6bit | 1bit | 1bit | 2bit | 3bit | 3bit |
|---|---|---|---|---|---|
| OpCod | Direction | Size | Addressing mode | Register ID | Specific addressign mode |
| Register ID | Register Name |
|---|---|
| 0 0 0 | AL AX |
| 0 0 1 | CL CX |
| 0 1 0 | DL DX |
| 0 1 1 | BL BX |
| 1 0 0 | AH SP |
| 1 0 1 | CH BP |
| 1 1 0 | DH SI |
| 1 1 1 | BH DI |