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...

programming, an interrupt handler, also known as an interrupt service routine (ISR), is a special block of code associated with a specific interrupt condition...

(see interrupt vector). It is therefore entirely possible to use a far-call instruction to start the interrupt-function manually after pushing the flag register...

preventing some interrupts from triggering, prohibition of execution of a class of "privileged" instructions. Additional status flags may bypass memory...

as well, such as more specialized flags, interrupt enable bits, and similar types of information. During an interrupt, the status of the thread currently...

device triggers an interrupt and the interrupt flag (IF) in the FLAGS register is set, the processor's hardware looks for an interrupt handler in the table...

Sapphire Rapids processors, the UIRET instruction always sets UIF (User Interrupt Flag) to 1. On Sierra Forest and later processors, UIRET will set UIF to...

[The second semaphore being positive would raise the corresponding interrupt flag.]" Dijkstra wrote about the unbounded buffer case: "We consider two...

If-then-else, a conditional statement in computer programming IF (x86 flag), the Interrupt Flag in the x86 processor architecture Information filter, or inverse...

A raster interrupt (also called a horizontal blank interrupt) is an interrupt signal in a legacy computer system which is used for display timing. It is...

are used by address translation, CR 4-6 contain miscellaneous flags including interrupt masks and Extended Control Mode, and CR 8-14 contain the switch...

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...

Auxiliary carry flag (AF), Zero flag (ZF), Sign flag (SF), Trap flag (TF), Interrupt flag (IF), Direction flag (DF), and Overflow flag (OF). Also referred...

8259 combines multiple interrupt input sources into a single interrupt output to the host microprocessor, extending the interrupt levels available in a...

programs that would clear the interrupt flag and then hang for too long. The hardware used the non-maskable interrupt (NMI) to take control back to the...

Special bit load and bit store instructions use this bit. I Interrupt flag. Set when interrupts are enabled. There are two special cases which exist to facilitate...

used since then, except for an interruption for a few days in 1848. Since 1976, there have been two versions of the flag in varying levels of use by the...

operating system program was interrupted if such interruption was specified by the channel program's Program Control Interrupt flag, and the "C-Unit" finally...

automatically do a type-1 interrupt after each instruction executes. When the 8086 does a type-1 interrupt, it pushes the flag register on the stack. The...

$EFE1FE aVBufA - register A base - $EFFFFE aVIFR - interrupt flag register - $EFFBFE aVIER - interrupt enable register - $EFFDFE The RAM map is organised...

affect the application but are not directly user-visible, e.g. user-mode interrupt configuration). The user-state items are enabled by setting their associated...

PxIE Port x interrupt enable. When this bit and the corresponding PxIFG bit are both set, an interrupt is generated. PxIFG Port x interrupt flag. Set whenever...

result of an operation. Certain bits (such as the Carry, Interrupt-disable, and Decimal flags) may be explicitly controlled using set and clear instructions...

the data loaded from the Refresh or Interrupt source registers. For both instructions, the Parity/Overflow flag (bit 2) is set according to the current...

enhancements of newer Intel 80486 and Intel Pentium processors—the Virtual Interrupt Flag (VIF), which was part of the Virtual Mode Extensions (VME)—to solve...

further increased by various control registers, including an interrupt flag register, an interrupt enable register and two Function Control Registers. Two...

the (D)ecimal flag in the NMOS 6502's status register is undefined after a reset or interrupt. This means programmers have to set the flag to a known value...

disabled by the DI instruction. In addition, the SIM (Set Interrupt Mask) and RIM (Read Interrupt Mask) instructions, the only instructions of the 8085 that...

interrupt call 13hex, the 20th interrupt vector in an x86-based (IBM PC-descended) computer system. The BIOS typically sets up a real mode interrupt handler...

The flag of Wales (Welsh: Baner Cymru or Y Ddraig Goch, meaning 'the red dragon') consists of a red dragon passant on a green and white field. As with...