Z86C21 Datasheet, PDF (31/35 Pages) Zilog, Inc. – 8K ROM Z8 CMOS MICROCONTROLLER

INSTRUCTION SUMMARY (Continued)
Instruction
and Operation
Address
Mode Opcode Flags Affected
dst src Byte (Hex) C Z S V D H
NOP
FF
------
Instruction
and Operation
STOP
Z86C21 MCU
WITH 8K ROM
Address
Mode Opcode Flags Affected
dst src Byte (Hex) C Z S V D H
6F
------
OR dst, src
†
4[ ]
dst←dst OR src
POP dst
R
50
dst←@SP;
IR
51
SP←SP + 1
PUSH src
SP←SP – 1;
@SP←src
R 70
IR 71
RCF
CF
C←0
RET
AF
PC←@SP;
SP←SP + 2
RL dst
R
90
C
7
0
IR
91
RLC dst
R
10
IR
11
C
7
0
RR dst
R
E0
IR
E1
C
7
0
RRC dst
R
C0
C
7
0
IR
C1
SBC dst, src
†
3[ ]
dst←dst←src←C
SCF
DF
C←1
SRA dst
R
D0
IR
D1
C
7
0
SRP src
RP←src
Im 31
- TT0 - -
------
------
0- - - - -
------
TTTT- -
TTTT- -
TTTT- -
SUB dst, src
†
dst←dst←src
SWAP dst
7
43
R
IR
0
2[ ]
TTTT1 T
F0
XTTX- -
F1
TCM dst, src
†
(NOT dst)
AND src
TM dst, src
†
dst AND src
XOR dst, src
†
dst←dst
XOR src
6[ ]
- TT0 - -
7[ ]
- TT0 - -
B[ ]
- TT0 - -
† These instructions have an identical set of addressing modes, which
are encoded for brevity. The first opcode nibble is found in the instruction
set table above. The second nibble is expressed symbolically by a ‘[ ]’
in this table, and its value is found in the following table to the left of the
applicable addressing mode pair.
For example, the opcode of an ADC instruction using the addressing
modes r (destination) and Ir (source) is 13.
TTTT- -
TTTT1 T
1- - - - -
TTT0 - -
------
Address Mode
dst
src
r
r
r
Ir
R
R
R
IR
R
IM
IR
IM
Lower
Opcode Nibble
[2]
[3]
[4]
[5]
[6]
[7]
31