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Exchange, Block Transfer And Search Group
Exchange, Block Transfer And Search Group
- Gunther Strube
Owned by Gunther Strube
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Mnemonic Symbolic Flags (bit 7-0) Instruction Number Number of Number of Comments
operation S Z . H . V N C opcode of bytes M cycles T states
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EX DE,HL DE <-> HL * * X * X * * * 11 101 011 (EBh) 1 1 4
EX AF,AF' AF <-> AF' * * X * X * * * 00 001 000 (08h) 1 1 4
EXX BC <-> BC' * * X * X * * * 11 011 001 (D9h) 1 1 4
DE <-> DE'
HL <-> HL'
EX (SP),HL L <-> (SP) * * X * X * * * 11 100 011 (E3h) 1 5 19
H <-> (SP+1)
EX (SP),IX IXL <-> (SP) * * X * X * * * 11 011 101 (DDh) 2 6 23
EX (SP),IY IXH <-> (SP+1) * * X * X * * * 11 111 101 (FDh) 2 6 23
11 100 011 (E3h)
LDI (DE) <- (HL) * * X 0 X ? 0 * 11 101 101 (EDh) 2 4 16
BC <- BC-1 (1) 10 100 000 (A0h)
DE <- DE+1
HL <- HL+1
LDIR (DE) <- (HL) * * X 0 X 0 0 * 11 101 101 (EDh) 2 5 21 if BC<>0
BC <- BC-1 10 110 000 (B0h) 2 4 16 if BC=0
DE <- DE+1
HL <- HL+1 Repeat until BC=0
LDD (DE) <- (HL) * * X 0 X ? 0 * 11 101 101 (EDh) 2 4 16
BC <- BC-1 (1) 10 101 000 (A8h)
DE <- DE-1
HL <- HL-1
LDDR (DE) <- (HL) * * X 0 X 0 0 * 11 101 101 (EDh) 2 5 21 if BC<>0
BC <- BC-1 10 111 000 (B8h) 2 4 16 if BC=0
DE <- DE-1
HL <- HL-1 Repeat until BC=0
CPI A = (HL) ? ? X ? X ? 1 * 11 101 101 (EDh) 2 4 16
BC <- BC-1 (2) (1) 10 100 001 (A1h)
HL <- HL+1
CPIR A = (HL) ? ? X ? X ? 1 * 11 101 101 (EDh) 2 5 21 if BC<>0 and A<>(HL)
BC <- BC-1 (2) (1) 10 110 001 (B1h) 2 4 16 if BC=0 or A=(HL)
HL <- HL+1 Repeat until BC=0 or A=(HL)
CPD A = (HL) ? ? X ? X ? 1 * 11 101 101 (EDh) 2 4 16
BC <- BC-1 (2) (1) 10 101 001 (A9h)
HL <- HL-1
CPDR A = (HL) ? ? X ? X ? 1 * 11 101 101 (EDh) 2 5 21 if BC<>0 and A<>(HL)
BC <- BC-1 (2) (1) 10 111 001 (B9h) 2 4 16 if BC=0 or A=(HL)
HL <- HL-1 Repeat until BC=0 or A=(HL)
(1) P/V = 0, if result of BC-1 = 0, otherwise P/V = 1
(2) Fz = 1, if A = (HL), otherwise Fz = 0