Intel 80C188EC User Manual page 211

INTERRUPT CONTROL UNIT
INT0
INT1
INT2
INT3
INT4
INT5
INT6
INT7
Internal Interrupt
Request Latch
Registers
Interrupt Requests From Integrated Peripherals
Figure 8-1. Interrupt Control Unit Block Diagram
8-2
Master 8259A
IR0
IR1
IR2
IR3
IR4
IR5
IR6
IR7
Slave 8259A
TMI0
IR0
TMI1
IR1
DMAI2
IR2
DMAI3
IR3
TMI2
IR4
RXI0
IR5
TXI0
IR6
INT7
IR7
INT
INTA
D7:0
A1
A0
INT
INTA
D7:0
A1
A0
CAS Bus
A1217-0A