Z8F6421PM020SC Datasheet, PDF (265/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
245
Table 132. eZ8 CPU Instruction Summary (Continued)
Assembly
Mnemonic
CPX dst, src
DA dst
DEC dst
DECW dst
DI
DJNZ dst, RA
EI
HALT
INC dst
INCW dst
IRET
JP dst
JP cc, dst
Flags Notation:
Symbolic Operation
Address Mode
Opcode(s)
Flags
Fetch Instr.
dst src (Hex) C Z S V D H Cycles Cycles
dst - src
ER ER
A8
****- - 4
3
ER IM
A9
4
3
dst ← DA(dst)
R
40
* * *X- - 2
2
IR
41
2
3
dst ← dst - 1
R
30
-***- - 2
2
IR
31
2
3
dst ← dst - 1
RR
80
-***- - 2
5
IRR
81
2
6
IRQCTL[7] ← 0
8F
------ 1
2
dst ← dst – 1
r
if dst ≠ 0
PC ← PC + X
0A-FA - - - - - - 2
3
IRQCTL[7] ← 1
9F
------ 1
2
HALT Mode
7F
------ 1
2
dst ← dst + 1
R
20
-***- - 2
2
IR
21
2
3
r
0E-FE
1
2
dst ← dst + 1
RR
A0
-***- - 2
5
IRR
A1
2
6
FLAGS ← @SP
SP ← SP + 1
PC ← @SP
SP ← SP + 2
IRQCTL[7] ← 1
BF
****** 1
5
PC ← dst
DA
8D
------ 3
2
IRR
C4
2
3
if cc is true
PC ← dst
DA
0D-FD - - - - - - 3
2
* = Value is a function of the result of the operation.
- = Unaffected
X = Undefined
0 = Reset to 0
1 = Set to 1
PS019915-1005
eZ8 CPU Instruction Set