When two non-shareable hardware devices attempt to use the same IRQ line, what condition occurs?
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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In the 8259 Programmable Interrupt Controller (PIC) fixed hardware priority scheme, IRQ 0 has what priority level?
Which hardware Interrupt Request (IRQ) line is driven by the system programmable interval timer (PIT) device?
In a hardware interrupt service routine, an End of Interrupt (EOI) signal is sent to the 8259 PIC by the:
When executing the OUT instruction to send data to an I/O port, which register serves as the required source register?
In the 8259 Programmable Interrupt Controller (PIC), which I/O port address is used for the Interrupt Mask Register (IMR) to selectively enable or disable IRQs?
How many pins are present on a standard parallel port DB-25 connector?
Write an assembly language routine to disable (mask) the keyboard hardware interrupt (IRQ 1) using the 8259 PIC Interrupt Mask Register (IMR).
In the 8259 Programmable Interrupt Controller (PIC) fixed hardware priority scheme, IRQ 0 possesses what priority level?
When executing a COM file, at which offset within the Program Segment Prefix (PSP) does the actual text of the first command-line parameter begin?