AM186ES Advanced Micro Devices, AM186ES Datasheet - Page 110

• Manufacturer Part Number: AM186ES
• Description: microcontrollers provide a low-cost/ high-performance solution for embedded system designers who wish to use the x86 architecture.
• Manufacturer: Advanced Micro Devices

7.3.8
Figure 7-11
7-22
Interrupt In-Service Register
(INSERV, Offset 2Ch)
(Master Mode)
The bits in the In-Service register are set by the interrupt controller when the interrupt is
taken. Each bit in the register is cleared by writing the corresponding interrupt type to the
End-of-Interrupt (EOI) register.
Interrupt In-Service Register
The INSERV register is set to 0000h on reset.
Bits 15–11: Reserved
Bit 10: Serial Port 0 Interrupt In-Service (SP0)—This bit indicates the in-service state of
serial port 0.
Bit 9: Serial Port 1 Interrupt In-Service (SP1)—This bit indicates the in-service state of
the serial port 1.
Bits 8–4: Interrupt In-Service (INT4–INT0)—These bits indicate the in-service state of
the corresponding INT pin.
Bit 3: DMA Channel 1/Interrupt 6 In-Service (D1/I6)—This bit indicates the in-service
state of DMA channel 1 or INT6.
Bit 2: DMA Channel 0/Interrupt 5 In-Service (D0/I5)—This bit indicates the in-service
state of DMA channel 0 or INT5.
Bit 1: Reserved
Bit 0: Timer Interrupt In-Service (TMR)—This bit indicates the state of the in-service timer
interrupts. This bit is the logical OR of all the timer interrupt requests. When set to a 1, this
bit indicates that the corresponding timer interrupt request is in-service.
15
Reserved
Interrupt Control Unit
SP0
SP1
I4
7
I3
I2
I1
I0
D1/I6
D0/I5
Res
TMR
0