Z8018x
Family MPU User Manual
UM005004-0918
71
stacked PC-1. If UFO is
1
, the starting address of the invalid instruction is
equal to the stacked PC-2.
Bus Release cycle, Refresh cycle, DMA cycle, and WAIT cycle cannot be
inserted just after TTP state which is inserted for TRAP interrupt
sequence. Figure depicts TRAP Timing - 2nd Op Code undefined and
Figure illustrates Trap Timing - 3rd Op Code undefined.
Figure 32. TRAP Timing Diagram -2nd Op Code Undefined
2nd Op Code
Fetch Cycle
PC Stacking
Restart from 0000H
Op Code
Fetch Cycle
PC
SP-1
SP-2
0000H
Undefined
Op Code
Ti
Ti
Ti
T1
Ti
Ti
T1
T2
T3
T2
T3 T1
T2
T3
T1
T2
T3
Phi
A0
–
A19
WR
RD
MREQ
D0
–
D7
MI
PCH
PCL
Содержание Z8018 Series
Страница 1: ...www zilog com Z8018x Family MPU User Manual UM005004 0918...
Страница 206: ...Z8018x Family MPU User Manual 192 UM005004 0918...
Страница 220: ...Z8018x Family MPU User Manual 206 UM005004 0918...
Страница 250: ...Z8018x Family MPU User Manual 236 UM005004 0918...
Страница 260: ...Z8018x Family MPU User Manual 246 UM005004 0918...
Страница 300: ...Z8018x Family MPU User Manual 286 UM005004 0918...
Страница 306: ...Z8018x Family MPU User Manual 292 UM005004 0918...