Among the 8 Hardware Interrupt Request (IRQ) lines on the primary 8259 PIC, which line has the highest priority?
Ch 09: Software Interrupts and DOS/BIOS Services
Covers IVT structure (256 vectors x 4 bytes each = 1KB), pushing flags and CS:IP during interrupt invocation, hooking existing software interrupts, and invoking DOS function calls for disk and character I/O.
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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 Hardware Interrupt Request line (IRQ) is assigned to the floppy disk drive controller in IBM-compatible PCs?
Which standard Hardware Interrupt Request (IRQ) line is commonly assigned to sound cards in legacy IBM-compatible PCs?
Which I/O port address is used to write the Interrupt Mask Register (IMR) on the primary 8259 Programmable Interrupt Controller (PIC) to enable or disable hardware interrupts?
What is the standard hardware designation for the 25-pin parallel port connector used on IBM-compatible PCs?
Which Hardware Interrupt Request (IRQ) line on the 8259 Programmable Interrupt Controller is triggered by the keyboard hardware?
On a standard 25-pin DB-25 parallel port connector, which range of pins is connected to electrical ground?
Which Hardware Interrupt Request (IRQ) line is assigned to the floppy disk drive controller in IBM-compatible PCs?
When two or more hardware devices in a computer system attempt to share or use the same IRQ line simultaneously without hardware support, what issue occurs?
In MS-DOS, at what memory offset within the code segment must the first executable instruction of a.COM file be located?