ZiLOG eZ80 User Manual page 154

EX (SP), HL
Exchange Stack and HL Register
Operation
if ADL = 1 {
(SPL) ↔ HL[7:0]
(SPL+1) ↔ HL[15:8]
(SPL+2) ↔ HL[23:16]
}
else if ADL = 0 {
SPS ↔ HL[7:0]
(SPS+1) ↔ HL[15:8]
}
Description
The CPU exchanges the contents of the multibyte CPU register HL with the contents of
the memory location specified by the Stack Pointer (SP). In ADL mode, or when the .L
suffix is employed, SPL is used for SP. In Z80 mode, or when the .S suffix is employed,
SPS is used for SP.
Condition Bits Affected
None.
Attributes
Mnemonic
EX
EX.S
EX.L
UM007714-0908
Operand ADL Mode
0/1
(SP),HL
1
(SP),HL
0
(SP),HL
Cycle Opcode (hex)
5/7
E3
6
52, E3
8
49, E3
®
eZ80 CPU
User Manual
145
CPU Instruction Set