Ex exchange register (word) – Zilog Z80380 User Manual
Page 86
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5-52
Z380
™
U
SER
'
S
M
ANUAL
DC-8297-03
Z
ILOG
EX
EXCHANGE REGISTER (WORD)
EX dst,src
dst = R, RX
src = R, RX
Operation:
if (LW) then begin
dst(31-0)
↔
src(31-0)
end
else begin
dst(15-0)
↔
src(15-0)
end
The contents of the destination are exchanged with the contents of the source.
Flags:
S:
Unaffected
Z:
Unaffected
H:
Unaffected
V:
Unaffected
N:
Unaffected
C:
Unaffected
Addressing
Execute
Mode
Syntax
Instruction Format
Time
Note
R:
EX BC,DE
11101101 00000101
3
L
EX BC,HL
11101101 00001101
3
L
EX DE,HL
11101011
3
L
RX:
EX R,RX
11101101 00rry011
3
L
EX IX,IY
11101101 00101011
3
L
Field Encodings:
rr: 00 for BC, 01 for DE, 11 for HL
y:
0 for IX, 1 for IY
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