Sharp MZ-700 - Z80 A Instruction Set

A. 4
Z80A Instruction Set
A summary of the Z80A instructions are given below for reference.
Mnemonic
Symbolic
Op -code
I
I
Mnemonic
Symbolic
Op-code
operation operation
8-bit load group
I
L D
HL, ( nn )
j H+- ( nn+1 )
00
101
010
L+- ( nn )
n
LD
r, r '
r+-r'
01 r
r '
n
LD r, n
r+-n
00
·r
110
LD dd, ( nn ) dd H+-( nn + 1)
11
101 101
n
dd L < -(n n)
01 dd1 011
LD
r, (HL)
r +-( HL)
01 r 110 n
LD
r, (IX+d)
r +-( IX +d)
11
011 101
n
01 r 110
LD IX, ( nn ) I XH+-( nn + 1)
11 011 101
d
IXL +-( nn )
00
101
010
LD r, (IY+d)
r +-( I Y+d)
11 111 101
n
01 r 110
n
d
L D
IY, ( nn )
I YH+-( nn+1 )
11 111 101
LD ( HL),r
( HL) +-r
01 11 0 r IYL +-( nn )
00
101
0 10
LD ( I X+d), r
( IX + d )+- r
11
011 101
n
01 110 r
n
d
LD (nn), HL
C nn + 1) +---H
00 100 010
LD ( I Y+d), r ( I Y+ d )+- r
11 111 101
(n n )+- L
n
01 110 r
n
d
LD (n n ), dd
C nn + 1)+---dd H
11 101 101
LD
(HL), n ( HL) +-n
00
110 110
C
nn )+-ddl
01 ddO 011
n
n
LD
( I X+d), n (IX+ d)+-n
11 011 101
n
00 1 10 110
LD ( nn ) , IX (nn + 1 )+-IXH
11 011 101
d
( nn )+- IXL
00 100 010
n
n
LD (IY+d), n (IY+d)+-n 11 111
101
n
00
110 110
LD ( nn ), IY
( nn + 1 ) <-I Y H
11 111 101
d
( nn )<---IY L
00 100 010
n
n
LD A, (BC) A<-(BC)
00 001 01 0
it
LD A, (DE) A+-(DE)
00 011 010
L D SP, HL
SP<-HL
11 111 001
LD A, (nn)
A<-(nn)
00 111 010 LD SP,IX
SP+- IX
11 011
101
n 11
111 00 1
n LD SP, IY
SP+- IY
11
111
101
LD
(BC), A
( BC)<- A
00 000 010
11 111 001
LD (DE), A
(DE)+-A
00 010 010 PUSH
00
(SP -2 )<- 00 L
11000101
LD (nn), A
( nn ) <- A
00
110 010
(S P-1 )+---oo H
n
PU SH IX
(S P-2 )+--- I XL
11 011 101
n
(S P-1)<-I XH
11 100 101
L D A, I
A<-1
11 101 101 PUSH IY
(S P -2)+--- IYL
11 111 101
01 010 111
(S P -1 )+-IY H
11
100 101
LD A. R
A+-R
11 1 01 101
POP 00
00 H+-(S P + 1)
11 ooO 001
01 0 11 111 OOL +-(SP)
LD I, A
1<-A
11 1 01 101 POP IX I XH<-(S P + 1)
11 011 101
01
000
111 IXL +-(SP)
11 100 0 01
LD R,A
R<-A
11 101
101
P OP IY
IYH+-(S P+ 1)
11 111 1 01
01 001 111
I Yc+-(S P)
11 100 001
1 6 - blt load group
Exchange group · and block transfer and search g roup
LD dd, nn
dd<-nn
00 ddO 001 EX DE, HL
DE+-+HL
11 101
011
n
EX A F,
AF '
A F+-+AF'
00 001
000
n E XX
( BC )+-+( BC ')
11 011
001
LD IX, nn
I X<- nn 11 0 11 101
( DE )+-+( DE ')
00 1 00 001
( HL) +-+( HL ')
n EX
(SP), HL H+-+(S P+ 1)
11
100 011
n
L<-+(SP )
LD IY, nn
IY<-nn
11 1 11 101 EX
(SP), IX
I
XH-CS P+ 1) 11
0 11 101
00 100 001
IXL .-.(S P)
11
1 00 0 11
n EX
(S P) , IY IY H-( SP+1)
11 111 101
n
IY L <-+(S P)
11 100 011
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