The basic function of the SCAS (Scan String) instruction is to:
Ch 11: Real-Time Interrupts & Timer Programming
Technical study of timer channels, programming PIT control word registers (port 0x43), divisor calculations (1193180 / frequency), hooking timer tick interrupt 08h, and rendering on-screen digital clocks.
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CS401 - Computer Architecture and Assembly Language Programming Examination Practice
Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.
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On each single iteration during string block operations, the REP prefix will always:
If string processing in assembly is configured to proceed from higher memory addresses towards lower memory addresses (autodecrement mode), what is the state of the Direction Flag (DF)?
Which pair of index registers is primarily used in assembly language to perform memory access during string block instructions?
During execution of the STOSW instruction, when the Direction Flag is cleared (DF = 0), destination index register DI is:
Which assembly instruction clears the Direction Flag (DF = 0) to configure string operations for autoincrementing index registers?
In 8088 CPU architecture, which category of instructions uniquely allows moving data directly from one memory location to another memory location in a single instruction?
During the execution of the STOSB (Store String Byte) instruction, when the Direction Flag is clear (DF = 0), the destination index register (DI) is:
Which instruction prefix is used in assembly language to repeat string block instructions according to the iteration counter in register CX?
Which pair of index registers is primarily used to access memory during string instruction execution?