Which x86 register is generally used to specify the service/function number when invoking a BIOS or DOS software interrupt?
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.
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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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Which of the following hardware interrupt requests (IRQs) is generated by the keyboard controller?
Which of the following Hardware Interrupt Requests (IRQs) is dedicated to the Floppy Disk Controller?
When two hardware devices in a system attempt to use the same IRQ line simultaneously without proper sharing support, what occurs?
In 8088 assembly language programming, explain how to hook a custom Keyboard Interrupt Service Routine (INT 9 ISR) into the Interrupt Vector Table (IVT). Annotate and complete the provided assembly code snippet.
On the primary 8259 Programmable Interrupt Controller (PIC), what is the priority level of the IRQ 0 interrupt line relative to other IRQs?
Which of the following hardware Interrupt Request (IRQ) lines is driven by the Programmable Interval Timer (PIT) device?
An End of Interrupt (EOI) command signal is sent to the 8259 Programmable Interrupt Controller (PIC) by which software entity upon completing interrupt servicing?
Which register serves as the source accumulator register containing the data byte or word to be transmitted in the I/O output instruction 'OUT'?
In the master 8259 Programmable Interrupt Controller (PIC), which I/O port address is used for the Interrupt Mask Register (IMR) to selectively enable or disable hardware interrupts?