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The 8085 has extensions to support new interrupts, with three maskable vectored interrupts (RST 7.5, RST 6.5 and RST 5.5), one non-maskable interrupt (TRAP), and one externally serviced interrupt (INTR). Each of these five interrupts has a separate pin on the processor, a feature which permits simple systems to avoid the cost of a separate ...
In computing, a non-maskable interrupt (NMI) is a hardware interrupt that standard interrupt-masking techniques in the system cannot ignore. It typically occurs to signal attention for non-recoverable hardware errors. Some NMIs may be masked, but only by using proprietary methods specific to the particular NMI.
The 8085 has a TRAP interrupt which cannot be disabled (that is, TRAP is a Non-Maskable interrupt or NMI) and an INTR interrupt. Comprehensive use of the INTR requires an external Programmable Interrupt Controller such as an Intel 8259."
Earlier ARC processors based on the ARCompact and ARCtangent architectures had three link registers: two interrupt link registers (ILINK) and one branch link register (BLINK). [5] [7] [8] [9] The two interrupt link registers were ILINK1 (for level 1 (low priority) maskable interrupts), and ILINK2 (for level 2 (mid priority) maskable interrupts ...
The interrupt priority level (IPL) is a part of the current system interrupt state, which indicates the interrupt requests that will currently be accepted. The IPL may be indicated in hardware by the registers in a programmable interrupt controller , or in software by a bitmask or integer value and source code of threads.
a special-purpose, non-maskable interrupt (65C816 only, see below), level-triggered The detection of a RESET signal causes the processor to enter a system initialization period of six clock cycles, after which it sets the interrupt request disable flag in the status register and loads the program counter with the values stored at the processor ...
The Interrupt flag (IF) is a flag bit in the CPU's FLAGS register, which determines whether or not the (CPU) will respond immediately to maskable hardware interrupts. [1] If the flag is set to 1 maskable interrupts are enabled. If reset (set to 0) such interrupts will be disabled until
A non-maskable interrupt (NMI), which can be used to respond to power-down situations or other high-priority events ... Like the 8080, 8085 and 8086 processors, but ...