AM186ES Advanced Micro Devices, AM186ES Datasheet - Page 118
AM186ES
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
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7.4.4
Figure 7-19
7-30
Interrupt Status Register
(INTSTS, Offset 30h)
(Slave Mode)
The Interrupt Status register controls DMA activity when nonmaskable interrupts occur and
indicates the current interrupt status of the three timers.
Interrupt Status Register
The INTSTS register is set to 0000h on reset.
Bit 15: DMA Halt (DHLT)—When set to 1, halts any DMA activity. Automatically set to 1
when nonmaskable interrupts occur and reset when an IRET instruction is executed.
Bits 14–3: Reserved
Bits 2–0: Timer Interrupt Request (TMR2–TMR0)—When set to 1, indicates the
corresponding timer has an interrupt request pending.
DHLT
15
Interrupt Control Unit
Reserved
7
TMR2
TMR1
TMR0
0