Zilog Z80180 Manual de usuario Pagina 100

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 326
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 99
Z8018x
Family MPU User Manual
UM005003-0703
85
Z8X180. Figure 43 illustrates the INT1, INT2 and internal interrupts
timing.
Table 10. RETI Control Signal States
Machine
Cycle States Address Data
MI
RD WR MREQ IORQ M1E=1 M1E=0 HALT ST
1 T1-T3 1st
Op Code
EDH 0 1 0 1 0 1 1 0
2TI-T32nd
Op Code
4DH 0 1 0 1 0 1 1 1
3T1Don't
Care
3-state 1 1 1 1 1 1 1 1
4T1Don't
Care
3-state 1 1 1 1 1 1 1 1
5T1Don't
Care
3-state 1 1 1 1 1 1 1 1
6 T1-T3 1st
Op Code
EDH 0 1 0 1 0 0 1 1
7T1Don't
Care
3-state 1 1 1 1 1 1 1 1
8 T1-T3 2nd
Op Code
4DH 0 1 0 1 0 1 1 1
9T1-T3SPdata01011111
10 T1-T3 SP+1 data 0 1 0 1 1 1 1 1
IOC affects the IORQ/RD signals. M1E affects the assertion of M1. One state also reflects a 1 while
the other reflects a 0
Vista de pagina 99
1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 325 326

Comentarios a estos manuales

Sin comentarios