Instruction Set - ZiLOG Z8 Series User Manual

Instruction Set

®
Z8 instructions can be divided functionally into the following eight groups:
•
Load
•
Bit Manipulation
•
Arithmetic
•
Block Transfer
•
Logical
•
Rotate and Shift
•
Program Control
•
CPU Control
The following summary shows the instructions belonging to each group and the number of
operands required for each. The source operand is
and a condition code is
Table 26. Load Instructions
Mnemonic
CLR
LD
LDC
LDE
POP
PUSH
Table 27. Arithmetic Instructions
Mnemonic
ADC
ADD
CP
DA
DEC
DECW
UM001604-0108
.
cc
Operands Instruction
Clear
dst
Load
dst, src
Load Constant
dst, src
Load External
dst, src
Pop
dst
Push
src
Operands Instruction
Add with Carry
dst, src
Add
dst, src
Compare
dst, src
Decimal Adjust
dst
Decrement
dst
Decrement Word
dst
, the destination operand is
src
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Z8 CPU
User Manual
141
,
dst
Instruction Set