AM186ES Advanced Micro Devices, AM186ES Datasheet - Page 120

• 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

7.4.6
Figure 7-21
7-32
Interrupt In-Service Register
(INSERV, Offset 2Ch)
(Slave Mode)
The format of the In-Service register is shown in Figure 7-21. The bits in the In-Service
register are set by the interrupt controller when the interrupt is taken. The in-service bits
are cleared by writing to the End-of-Interrupt (EOI) register.
Interrupt In-Service Register
The INSERV register is set to 0000h on reset.
Bits 15–6: Reserved
Bits 5–4: Timer 2/Timer 1 Interrupt In-Service (TMR2–TMR1)—When set to 1, these bits
indicate that the corresponding timer interrupt is currently being serviced.
Bits 3–2: DMA Channel Interrupt In-Service (D1/I6–D0/I5)—When set to 1, the
corresponding DMA channel INT5/INT6 is currently being serviced.
Bit 1: Reserved
Bit 0: Timer 0 Interrupt In-Service (TMR0)—When set to 1, this bit indicates timer 0 is
currently being serviced.
15
Reserved
Interrupt Control Unit
7
TMR2
TMR1
D1/I6
D0/I5
Res
TMR0
0