18.104.22.168 Miscellaneous operators
Finally, we list in the following table three miscellaneous MIX
instructions which do not fit in any of the previous subsections:
The only effect of executing ‘NOP’ is increasing the location
counter, while ‘HLT’ usually marks program termination.
- Move MOD words from M to the location stored in rI1.
OPCODE = 7, MOD = no. of words.
- No operation. OPCODE = 0, MOD = 0.
- Halt. Stops instruction fetching. OPCODE = 5, MOD = 2.