z80189 ZiLOG Semiconductor, z80189 Datasheet - Page 246
z80189
Manufacturer Part Number
z80189
Description
Z80180, Z8s180, Z8l180 Mpu Operation
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z80189.pdf
(326 pages)
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230
Table 45.
UM005003-0703
Operation
Name
Jump
Return
Restart
Z8018x
Family MPU User Manual
Mnemonics
JR Zj
JR NZj
RET
RET f
RETI
RETN
RST v
Program Control Instructions (Continued)
Op Code
11001001
00 101 000
<j-2>
00 100 000
<j-2>
11f 000
11101101
01001101
11101101
01000101
11 v 111
Immed Ext Ind Reg RegI Imp Rel
Addressing
D
D
D
D
D
D
D
Bytes States
2
2
2
2
1
1
1
2
2
1
6
8
6
8
9
5 (f : false)
10 (f : true) RET : f is true
12 (R0,R1) (SP)
ZZ(z)
12
11
continue : Z = 0
PC
continue : Z = 1
PC
(SP)
(SP + 1)
SP
continue : f is false
(SP + 1)
SP
(SP)
(SP + 1)
SP
IEF2®IEF1
PCHr®(SP-1)
PCLr®(SP-2)
0®PCHr
v®PCLr
SP
R
R
R
R
R
R
-2®SP
, + j®PC
M
M
M
+ j®PC
+ 2®SP
+ 2®SP
+ 2®SP
Operation
®PCLr
®PCLr
®PCLr
M
M
M
®PCHr
®PCHr
®PCHr
R
R
R
R
R
R
M
M
: Z = 0
: Z = 1
7 6 4 2
S Z H P/V N C
· · · ·
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Flags
1 0
· ·
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