ZiLOG eZ80 User Manual

eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
293
Condition Bits Affected
None.
Attributes
0 . L The starting Program Counter is {MBASE, PC[15:0]}.
Pop a byte from SPL into ADL to set memory mode
(03h = ADL, 02h = Z80).
if ADL mode {
Pop the upper byte of the return address from SPL into
PC[23:16].
Pop 2 LS bytes of the return address from {MBASE, SPS}
into PC[15:0].
The ending Program Counter is PC[23:0]
}
else Z80 mode {
Pop a 2-byte return address from {MBASE,SPS} into
PC[15:0].
The ending Program Counter is {MBASE, PC[15:0]}.
}
1 .L The starting Program Counter is PC[23:0]. Pop a byte
from SPL into ADL to set memory mode (03h = A D L ,
02h = Z 8 0 ) .
if ADL mode {
Pop 3-byte return address from SPL into PC[23:0].
The ending Program Counter is PC[23:0]
}
else Z80 mode {
Pop a 2-byte return address from SPL into PC[15:0].
The ending Program Counter is {MBASE, PC[15:0]}.
}
Mnemonic Operand ADL Mode Cycle Opcode (hex)
RET —0/15/6C9
RET.L —0 649, C9
RET.L —1 75B, C9
Table 83. RET Instruction Detail (Continued)
ADL Suffix Operation

ZiLOG eZ80 Specifications

General

Brand	ZiLOG
Model	eZ80
Category	Computer Hardware
Language	English