! Instruction !! Opcode !! Hexcode !! NOPs !! Cycles !! M-Cycle Sequence !! S !! Z !! 5 !! H !! 3 !! P !! N !! C !! Effect !! Description
|-
| bit b,r || 01bbbrrr || CB 40-45/47-4D/4F-55/57-5D/5F-65/67-6D/6F-75/77-7D/7F || 2 || 8 (4,4) || M1, M1 || + || + || + || 1 || + || P || 0 || - || tmp := r and [1 << b] ||rowspan=3|Test Bit
|-
| bit b,(hl) || 01bbb110 || CB 46/4E/56/5E/66/6E/76/7E || 3 || 12 (4,4,4) || M1, M1, MR, INT(1) || + || + || X || 1 || X || P || 0 || - || tmp := (hl) and [1 << b], <br> f5 := wz.13, f3 := wz.11
| bit b,(ixy+d) || 01bbb110 || DD/FD CB dd 46/4E/56/5E/66/6E/76/7E || 6 || 20 (4,4,3,5,4) || M1, M1, MRd, MRo, INT(2), MR, INT(1) || + || + || X || 1 || X || P || 0 || - || tmp := (ixy+d) and [1 << b], <br> f5 := [ixy+d].13, f3 := [ixy+d].11
|-
| res b,r || 10bbbrrr || CB 80-85/87-8D/8F-95/97-9D/9F-A5/A7-AD/AF-B5/B7-BD/BF || 2 || 8 (4,4) || M1, M1 || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || r := r and ~[1 << b] ||rowspan=4|Reset Bit
|-
| res b,(ixy+d)->r || 10bbbrrr || DD/FD CB dd 80-85/87-8D/8F-95/97-9D/9F-A5/A7-AD/AF-B5/B7-BD/BF || 7 || 23 (4,4,3,5,4,3) || M1, M1, MRd, MRo, INT(2), MR, INT(1), MW || (ixy+d) := r := (ixy+d) and ~[1 << b]
|-
| res b,(hl) || 10bbb110 || CB 86/8E/96/9E/A6/AE/B6/BE || 4 || 15 (4,4,4,3) || M1, M1, MR, INT(1), MW || (hl) := (hl) and ~[1 << b]
| res b,(ixy+d) || 10bbb110 || DD/FD CB dd 86/8E/96/9E/A6/AE/B6/BE || 7 || 23 (4,4,3,5,4,3) || M1, M1, MRd, MRo, INT(2), MR, INT(1), MW || (ixy+d) := (ixy+d) and ~[1 << b]
|-
| set b,r || 11bbbrrr || CB C0-C5/C7-CD/CF-D5/D7-DD/DF-E5/E7-ED/EF-F5/F7-FD/7F FF || 2 || 8 (4,4) || M1, M1 || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || rowspan=4|- || r := r or [1 << b] ||rowspan=4|Set Bit
|-
| set b,(ixy+d)->r || 11bbbrrr || DD/FD CB dd C0-C5/C7-CD/CF-D5/D7-DD/DF-E5/E7-ED/EF-F5/F7-FD/7F FF || 7 || 23 (4,4,3,5,4,3) || M1, M1, MRd, MRo, INT(2), MR, INT(1), MW || (ixy+d) := r := (ixy+d) or [1 << b]
|-
| set b,(hl) || 11bbb110 || CB C6/CE/D6/DE/E6/EE/F6/FE || 4 || 15 (4,4,4,3) || M1, M1, MR, INT(1), MW || (hl) := (hl) or [1 << b]