disable interrupt वाक्य

For example, most processors allow programs to disable interrupts, putting off the execution of interrupt handlers, in order to protect critical sections of code.
To avoid that you have to disable interrupts while accessing the data structure, in DOS or Linux .-- talk ) 06 : 15, 3 February 2015 ( UTC)
Uniprocessor architectures have the option of using uninterruptable sequences of instructions using special instructions or instruction prefixes to disable interrupts temporarily but this technique does not work for multiprocessor shared-memory machines.
On the Z80, if you execute DI ( disable interrupts ) followed by HALT ( wait for an interrupt ), the CPU will stay frozen waiting for an interrupt that cannot happen.
CAS, and other atomic instructions, are sometimes thought to be unnecessary in uniprocessor systems, because the atomicity of any sequence of instructions can be achieved by disabling interrupts while executing it.

If two tasks share data, each can gain exclusive access to variables either by disabling interrupts, locking the scheduler, using a semaphore, or preferably, using a mutual exclusion semaphore.
That's why I was slightly surprised that they wait until the 2nd instruction to disable interrupts-I figure that leaves a 2 cycle interval in which, should an interrupt occur, it would be serviced by a garbage vector.
Some old DOS programs that use a protected mode DOS extender and install their own interrupt handlers ( usually games ) use the CLI instruction in the handlers to disable interrupts and either POPF ( after a corresponding PUSHF ) or IRET ( which restores the flags from the stack as part of its effects ) to restore it.