set

Operands

set bit,r | set bit,(rr) | set bit,(ii+dd),r | set bit,(ii+dd)

Sets bit 0 of B.

Variants

Every form of set the assembler accepts. The cycles column counts clock cycles, written as taken/not taken for the conditional forms.

Instruction	Description	Flags	Bytes	Cycles
set 0,b	Sets bit 0 of B.	—	2	8
set 0,c	Sets bit 0 of C.	—	2	8
set 0,d	Sets bit 0 of D.	—	2	8
set 0,e	Sets bit 0 of E.	—	2	8
set 0,h	Sets bit 0 of H.	—	2	8
set 0,l	Sets bit 0 of L.	—	2	8
set 0,(hl)	Sets bit 0 of (HL).	—	2	15
set 0,a	Sets bit 0 of A.	—	2	8
set 1,b	Sets bit 1 of B.	—	2	8
set 1,c	Sets bit 1 of C.	—	2	8
set 1,d	Sets bit 1 of D.	—	2	8
set 1,e	Sets bit 1 of E.	—	2	8
set 1,h	Sets bit 1 of H.	—	2	8
set 1,l	Sets bit 1 of L.	—	2	8
set 1,(hl)	Sets bit 1 of (HL).	—	2	15
set 1,a	Sets bit 1 of A.	—	2	8
set 2,b	Sets bit 2 of B.	—	2	8
set 2,c	Sets bit 2 of C.	—	2	8
set 2,d	Sets bit 2 of D.	—	2	8
set 2,e	Sets bit 2 of E.	—	2	8
set 2,h	Sets bit 2 of H.	—	2	8
set 2,l	Sets bit 2 of L.	—	2	8
set 2,(hl)	Sets bit 2 of (HL).	—	2	15
set 2,a	Sets bit 2 of A.	—	2	8
set 3,b	Sets bit 3 of B.	—	2	8
set 3,c	Sets bit 3 of C.	—	2	8
set 3,d	Sets bit 3 of D.	—	2	8
set 3,e	Sets bit 3 of E.	—	2	8
set 3,h	Sets bit 3 of H.	—	2	8
set 3,l	Sets bit 3 of L.	—	2	8
set 3,(hl)	Sets bit 3 of (HL).	—	2	15
set 3,a	Sets bit 3 of A.	—	2	8
set 4,b	Sets bit 4 of B.	—	2	8
set 4,c	Sets bit 4 of C.	—	2	8
set 4,d	Sets bit 4 of D.	—	2	8
set 4,e	Sets bit 4 of E.	—	2	8
set 4,h	Sets bit 4 of H.	—	2	8
set 4,l	Sets bit 4 of L.	—	2	8
set 4,(hl)	Sets bit 4 of (HL).	—	2	15
set 4,a	Sets bit 4 of A.	—	2	8
set 5,b	Sets bit 5 of B.	—	2	8
set 5,c	Sets bit 5 of C.	—	2	8
set 5,d	Sets bit 5 of D.	—	2	8
set 5,e	Sets bit 5 of E.	—	2	8
set 5,h	Sets bit 5 of H.	—	2	8
set 5,l	Sets bit 5 of L.	—	2	8
set 5,(hl)	Sets bit 5 of (HL).	—	2	15
set 5,a	Sets bit 5 of A.	—	2	8
set 6,b	Sets bit 6 of B.	—	2	8
set 6,c	Sets bit 6 of C.	—	2	8
set 6,d	Sets bit 6 of D.	—	2	8
set 6,e	Sets bit 6 of E.	—	2	8
set 6,h	Sets bit 6 of H.	—	2	8
set 6,l	Sets bit 6 of L.	—	2	8
set 6,(hl)	Sets bit 6 of (HL).	—	2	15
set 6,a	Sets bit 6 of A.	—	2	8
set 7,b	Sets bit 7 of B.	—	2	8
set 7,c	Sets bit 7 of C.	—	2	8
set 7,d	Sets bit 7 of D.	—	2	8
set 7,e	Sets bit 7 of E.	—	2	8
set 7,h	Sets bit 7 of H.	—	2	8
set 7,l	Sets bit 7 of L.	—	2	8
set 7,(hl)	Sets bit 7 of (HL).	—	2	15
set 7,a	Sets bit 7 of A.	—	2	8
set 0,(ix+dd),b undocumented	Sets bit 0 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 0,(ix+dd),c undocumented	Sets bit 0 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 0,(ix+dd),d undocumented	Sets bit 0 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 0,(ix+dd),e undocumented	Sets bit 0 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 0,(ix+dd),h undocumented	Sets bit 0 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 0,(ix+dd),l undocumented	Sets bit 0 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 0,(ix+dd)	Sets bit 0 of the memory location pointed to by IX plus `dd`.	—	4	23
set 0,(ix+dd),a undocumented	Sets bit 0 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 1,(ix+dd),b undocumented	Sets bit 1 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 1,(ix+dd),c undocumented	Sets bit 1 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 1,(ix+dd),d undocumented	Sets bit 1 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 1,(ix+dd),e undocumented	Sets bit 1 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 1,(ix+dd),h undocumented	Sets bit 1 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 1,(ix+dd),l undocumented	Sets bit 1 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 1,(ix+dd)	Sets bit 1 of the memory location pointed to by IX plus `dd`.	—	4	23
set 1,(ix+dd),a undocumented	Sets bit 1 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 2,(ix+dd),b undocumented	Sets bit 2 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 2,(ix+dd),c undocumented	Sets bit 2 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 2,(ix+dd),d undocumented	Sets bit 2 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 2,(ix+dd),e undocumented	Sets bit 2 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 2,(ix+dd),h undocumented	Sets bit 2 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 2,(ix+dd),l undocumented	Sets bit 2 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 2,(ix+dd)	Sets bit 2 of the memory location pointed to by IX plus `dd`.	—	4	23
set 2,(ix+dd),a undocumented	Sets bit 2 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 3,(ix+dd),b undocumented	Sets bit 3 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 3,(ix+dd),c undocumented	Sets bit 3 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 3,(ix+dd),d undocumented	Sets bit 3 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 3,(ix+dd),e undocumented	Sets bit 3 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 3,(ix+dd),h undocumented	Sets bit 3 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 3,(ix+dd),l undocumented	Sets bit 3 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 3,(ix+dd)	Sets bit 3 of the memory location pointed to by IX plus `dd`.	—	4	23
set 3,(ix+dd),a undocumented	Sets bit 3 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 4,(ix+dd),b undocumented	Sets bit 4 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 4,(ix+dd),c undocumented	Sets bit 4 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 4,(ix+dd),d undocumented	Sets bit 4 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 4,(ix+dd),e undocumented	Sets bit 4 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 4,(ix+dd),h undocumented	Sets bit 4 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 4,(ix+dd),l undocumented	Sets bit 4 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 4,(ix+dd)	Sets bit 4 of the memory location pointed to by IX plus `dd`.	—	4	23
set 4,(ix+dd),a undocumented	Sets bit 4 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 5,(ix+dd),b undocumented	Sets bit 5 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 5,(ix+dd),c undocumented	Sets bit 5 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 5,(ix+dd),d undocumented	Sets bit 5 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 5,(ix+dd),e undocumented	Sets bit 5 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 5,(ix+dd),h undocumented	Sets bit 5 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 5,(ix+dd),l undocumented	Sets bit 5 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 5,(ix+dd)	Sets bit 5 of the memory location pointed to by IX plus `dd`.	—	4	23
set 5,(ix+dd),a undocumented	Sets bit 5 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 6,(ix+dd),b undocumented	Sets bit 6 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 6,(ix+dd),c undocumented	Sets bit 6 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 6,(ix+dd),d undocumented	Sets bit 6 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 6,(ix+dd),e undocumented	Sets bit 6 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 6,(ix+dd),h undocumented	Sets bit 6 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 6,(ix+dd),l undocumented	Sets bit 6 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 6,(ix+dd)	Sets bit 6 of the memory location pointed to by IX plus `dd`.	—	4	23
set 6,(ix+dd),a undocumented	Sets bit 6 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 7,(ix+dd),b undocumented	Sets bit 7 of the memory location pointed to by IX plus `dd`. The result is then stored in B.	—	4	23
set 7,(ix+dd),c undocumented	Sets bit 7 of the memory location pointed to by IX plus `dd`. The result is then stored in C.	—	4	23
set 7,(ix+dd),d undocumented	Sets bit 7 of the memory location pointed to by IX plus `dd`. The result is then stored in D.	—	4	23
set 7,(ix+dd),e undocumented	Sets bit 7 of the memory location pointed to by IX plus `dd`. The result is then stored in E.	—	4	23
set 7,(ix+dd),h undocumented	Sets bit 7 of the memory location pointed to by IX plus `dd`. The result is then stored in H.	—	4	23
set 7,(ix+dd),l undocumented	Sets bit 7 of the memory location pointed to by IX plus `dd`. The result is then stored in L.	—	4	23
set 7,(ix+dd)	Sets bit 7 of the memory location pointed to by IX plus `dd`.	—	4	23
set 7,(ix+dd),a undocumented	Sets bit 7 of the memory location pointed to by IX plus `dd`. The result is then stored in A.	—	4	23
set 0,(iy+dd),b undocumented	Sets bit 0 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 0,(iy+dd),c undocumented	Sets bit 0 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 0,(iy+dd),d undocumented	Sets bit 0 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 0,(iy+dd),e undocumented	Sets bit 0 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 0,(iy+dd),h undocumented	Sets bit 0 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 0,(iy+dd),l undocumented	Sets bit 0 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 0,(iy+dd)	Sets bit 0 of the memory location pointed to by IY plus `dd`.	—	4	23
set 0,(iy+dd),a undocumented	Sets bit 0 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23
set 1,(iy+dd),b undocumented	Sets bit 1 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 1,(iy+dd),c undocumented	Sets bit 1 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 1,(iy+dd),d undocumented	Sets bit 1 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 1,(iy+dd),e undocumented	Sets bit 1 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 1,(iy+dd),h undocumented	Sets bit 1 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 1,(iy+dd),l undocumented	Sets bit 1 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 1,(iy+dd)	Sets bit 1 of the memory location pointed to by IY plus `dd`.	—	4	23
set 1,(iy+dd),a undocumented	Sets bit 1 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23
set 2,(iy+dd),b undocumented	Sets bit 2 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 2,(iy+dd),c undocumented	Sets bit 2 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 2,(iy+dd),d undocumented	Sets bit 2 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 2,(iy+dd),e undocumented	Sets bit 2 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 2,(iy+dd),h undocumented	Sets bit 2 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 2,(iy+dd),l undocumented	Sets bit 2 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 2,(iy+dd)	Sets bit 2 of the memory location pointed to by IY plus `dd`.	—	4	23
set 2,(iy+dd),a undocumented	Sets bit 2 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23
set 3,(iy+dd),b undocumented	Sets bit 3 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 3,(iy+dd),c undocumented	Sets bit 3 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 3,(iy+dd),d undocumented	Sets bit 3 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 3,(iy+dd),e undocumented	Sets bit 3 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 3,(iy+dd),h undocumented	Sets bit 3 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 3,(iy+dd),l undocumented	Sets bit 3 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 3,(iy+dd)	Sets bit 3 of the memory location pointed to by IY plus `dd`.	—	4	23
set 3,(iy+dd),a undocumented	Sets bit 3 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23
set 4,(iy+dd),b undocumented	Sets bit 4 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 4,(iy+dd),c undocumented	Sets bit 4 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 4,(iy+dd),d undocumented	Sets bit 4 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 4,(iy+dd),e undocumented	Sets bit 4 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 4,(iy+dd),h undocumented	Sets bit 4 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 4,(iy+dd),l undocumented	Sets bit 4 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 4,(iy+dd)	Sets bit 4 of the memory location pointed to by IY plus `dd`.	—	4	23
set 4,(iy+dd),a undocumented	Sets bit 4 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23
set 5,(iy+dd),b undocumented	Sets bit 5 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 5,(iy+dd),c undocumented	Sets bit 5 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 5,(iy+dd),d undocumented	Sets bit 5 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 5,(iy+dd),e undocumented	Sets bit 5 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 5,(iy+dd),h undocumented	Sets bit 5 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 5,(iy+dd),l undocumented	Sets bit 5 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 5,(iy+dd)	Sets bit 5 of the memory location pointed to by IY plus `dd`.	—	4	23
set 5,(iy+dd),a undocumented	Sets bit 5 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23
set 6,(iy+dd),b undocumented	Sets bit 6 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 6,(iy+dd),c undocumented	Sets bit 6 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 6,(iy+dd),d undocumented	Sets bit 6 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 6,(iy+dd),e undocumented	Sets bit 6 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 6,(iy+dd),h undocumented	Sets bit 6 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 6,(iy+dd),l undocumented	Sets bit 6 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 6,(iy+dd)	Sets bit 6 of the memory location pointed to by IY plus `dd`.	—	4	23
set 6,(iy+dd),a undocumented	Sets bit 6 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23
set 7,(iy+dd),b undocumented	Sets bit 7 of the memory location pointed to by IY plus `dd`. The result is then stored in B.	—	4	23
set 7,(iy+dd),c undocumented	Sets bit 7 of the memory location pointed to by IY plus `dd`. The result is then stored in C.	—	4	23
set 7,(iy+dd),d undocumented	Sets bit 7 of the memory location pointed to by IY plus `dd`. The result is then stored in D.	—	4	23
set 7,(iy+dd),e undocumented	Sets bit 7 of the memory location pointed to by IY plus `dd`. The result is then stored in E.	—	4	23
set 7,(iy+dd),h undocumented	Sets bit 7 of the memory location pointed to by IY plus `dd`. The result is then stored in H.	—	4	23
set 7,(iy+dd),l undocumented	Sets bit 7 of the memory location pointed to by IY plus `dd`. The result is then stored in L.	—	4	23
set 7,(iy+dd)	Sets bit 7 of the memory location pointed to by IY plus `dd`.	—	4	23
set 7,(iy+dd),a undocumented	Sets bit 7 of the memory location pointed to by IY plus `dd`. The result is then stored in A.	—	4	23