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! Instruction !! Opcode !! NOPs !! Cycles !! S !! Z !! 5 !! H !! 3 !! P !! N !! C !! Effect !! Description
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| im 0 || 11101101 01*0*110 || || 8 || - || - || - || - || - || - || - || - || mode 0: execute instruction on bus ||rowspan=3|Set Interrupt Mode
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| im 1 || 11101101 01*10110 || || 8 || - || - || - || - || - || - || - || - || mode 1: execute rst $38
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| im 2 || 11101101 01*11110 || || 8 || - || - || - || - || - || - || - || - || mode 2: call (i * 256 + byte on bus)
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| in a,(N) || 11011011 nnnnnnnn || || 11 || - || - || - || - || - || - || - || - || a := ((N)) ||rowspan=3|I/O Input
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| in R,(c) || 11101101 01rrr000 || || 12 || + || + || + || 0 || + || P || 0 || - || R := ((c))
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| in f,(c) || 11101101 01110000 || || 12 || + || + || + || 0 || + || P || 0 || - || tmp := ((c))
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| inc R || 00rrr100 || || 4 || + || + || + || + || + || V || 0 || - || R += 1 ||rowspan=6|Increment
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| inc J || 11i11101 0010b100 || || 8 || + || + || + || + || + || V || 0 || - || J += 1
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| inc (hl) || 00110100 || || 11 || + || + || + || + || + || V || 0 || - || (hl) += 1
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| inc (I+D) || 11i11101 00110100 dddddddd || || 23 || + || + || + || + || + || V || 0 || - || (I+D) += 1
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| inc Q || 00qq0011 || || 6 || - || - || - || - || - || - || - || - || Q += 1
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| inc I || 11i11101 00100011 || || 10 || - || - || - || - || - || - || - || - || I += 1
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| ind || 11101101 10101010 || || 16 || + || + || + || X || + || X || X || X || tmp := ((c)), (hl) := tmp, hl -= 1,
b -= 1 => flags, nf := tmp.7,
tmp2 = tmp + [[c - 1] AND 0xff],
|| I/O Input and Decrement
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| indr || 11101101 10111010 || || 21/16 || + || + || + || X || + || X || X || X || ind, if b <> 0 then pc -= 2 || I/O Input and Decrement, Repeat
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| ini || 11101101 10100010 || || 16 || + || + || + || X || + || X || X || X || tmp := ((c)), (hl) := tmp, hl += 1,
b -= 1 => flags, nf := tmp.7,
tmp2 := tmp + [[c + 1] AND 0xff],
|| I/O Input and Increment
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| inir || 11101101 10110010 || || 21/16 || + || + || + || X || + || X || X || X || ini, if b <> 0 then pc -= 2 || I/O Input and Increment, Repeat
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