- ADD - Addition
- AND - Bitwise AND
- CMP - Compare values
- DI - Disable interrupt
- DJ - Decrement and jump conditionally
- EI - Enable interrupt
- EXG - Exchange register contents
- J - Jump
- JAL - Jump and link
- J/cc - Jump conditionally
- LCO - Load from code
- LCR - Load configuration register
- LD - Load to/from memory, between registers
- LIO - I/O read/write
- LS - Left shift
- NEG - Negation
- NOP - No operation
- NOT - Complement
- OR - Bitwise OR
- POP - Pop register pair
- POPA - Pop all register pairs
- PUSH - Push register pair
- PUSHA - Push all register pairs
- RETI - Return from interrupt
- RS - Right shift
- RSA - Right shift arithmetic
- SUB - Subtraction
- SWAP - Swap two topmost register stack entries
- SWAPA - Swap two topmost stack entries for all registers
- SYS - Perform syscall
- TST - Test register
- XOR - Bitwise exclusive-OR