In hardware interrupt processing, who sends the End of Interrupt (EOI) command to the Programmable Interrupt Controller (PIC) upon completing interrupt servicing?
Ch 08: String Instructions and Primitives
Comprehensive study of x86 string primitives operating across DS:SI and ES:DI, hardware-accelerated memory copy, screen clearing via STOSW, string length calculation via SCASB, and string comparison via CMPSB.
307 Questions307 MCQs0 Short Questions0 Long Questions
SEMESTER PASS
CS401 - Computer Architecture and Assembly Language Programming Examination Practice
Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.
Showing 181 – 190 of 307 Questions
Page 19 of 31
Which CPU accumulator registers function as the source data registers for the OUT port output instruction?
In the 8259 Programmable Interrupt Controller (PIC), which I/O port address corresponds to the Interrupt Mask Register (IMR) used to selectively enable or mask IRQ lines?
Which interrupt vector is designated in x86 architecture as the Single-Step / Debug interrupt?
What hardware priority level is assigned to IRQ 0 (System Timer) on the 8259 Programmable Interrupt Controller?
Which CPU register is strictly used as the source register for the OUT port I/O instruction?
Which hardware Interrupt Request (IRQ) line is designated on the primary 8259 PIC as the cascading interrupt line connected to the secondary (slave) PIC?
The 8259 Programmable Interrupt Controller utilizes two I/O port addresses: Port 20h serves as the control port, while Port 21h serves as __________.
The 8088 processor architecture broadly categorizes interrupts into how many major classes?
For what specific purpose is Software Interrupt 4 (INT 4) reserved in x86 processor architecture?