Z8S180 Zilog., Z8S180 Datasheet - Page 273

• Manufacturer Part Number: Z8S180
• Description: ENHANCED Z180 MICROPROCESSOR
• Manufacturer: Zilog.

Table 51. Bus and Control Signal Condition in Each Machine Cycle (Continued)
Instruction
EX (SP),IX
EX (SP),IY
HALT
IM0
IM1
IM2
INC g
DEC g
INC (HL)
DEC (HL)
Machine
Cycle
MC1
MC2
MC3
MC4
MC5
MC6
MC7
MC1
—
MC1
MC2
MC1
MC2
MC1
MC2
MC3
MC4
States
T1T2T3 1st Op Code
T1T2T3 2nd Op Code
T1T2T3 SP
T1T2T3 SP+1
Ti
T1T2T3 SP+1
T1T2T3 SP
T1T2T3 1st Op Code
—
T1T2T3 1st Op Code
T1T2T3 2nd Op Code
T1T2T3 1st Op Code
Ti
T1T2T3 1st Op Code
T1T2T3 HL
Ti
T1T2T3 HL
Address
Address
Address
*
Address
Next Op Code
Address
Address
Address
Address
*
Address
*
Data
1st Op
Code
2nd Op
Code
DATA
DATA
Z
IXH
IYH
IXL
IYL
1st Op
Code
Next Op
Code
1st Op
Code
2nd Op
Code
1st Op
Code
Z
1st Op
Code
DATA
Z
DATA
RD WR MREQ
0
0
0
0
1
1
1
0
0
0
0
0
1
0
0
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
1
1
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
1
0
MPU User Manual
IORQ M1 HALT ST
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
UM005001-ZMP0400
Z8018x Family
0
0
1
1
1
1
1
0
0
0
0
0
1
0
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
0
0
0
1
0
1
0
1
1
1
257