Ch 10: Hardware Interrupts and PIC 8259

Examines hardware interrupt architecture, masking interrupts via IMR (port 0x21), cascading master and slave PICs, sending non-specific EOI (0x20) commands, and servicing asynchronous peripheral requests.

189 Questions189 MCQs0 Short Questions0 Long Questions

🎯 Exam Practice Papers

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.

Showing 1 – 10 of 189 Questions

Page 1 of 19

🧠 Long Problem📘 CS401📑 Lec 10🏷️ 10.2. Debugger using Breakpoint InterruptHard🔁⭐💡📄🎓VU🏛️VU

Write the assembly language code for a Breakpoint Interrupt Routine (INT 3 ISR).

💻 assembly Snippet

debugisr:
    push bp
    mov bp, sp
    mov ax, [bp+4]
    mov es, ax
    dec word [bp+2]
    mov di, [bp+2]
    mov al, [opcode]
    mov [es:di], al
    or word [bp+6], 0x0100
    iret

📝 Short Q📘 CS401📑 Lec 10🏷️ 10.1. Keyboard InterfacingEasy🔁⭐💡📄🎓VU🏛️VU

When a key is pressed or released on a physical PC keyboard, which hardware interrupt (IRQ) and corresponding software interrupt vector are executed?

💻 assembly Snippet

in al, 0x60

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.1. Parallel Port InterfacingEasy🔁⭐💡📄🎓VU🏛️VU

Which range of pins on a standard DB-25 parallel port connector are connected to ground (GND)?

A.18-25
B.10-18
C.25-32
D.32-39

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.2. Serial Port Interfacing and RS-232Easy🔁⭐💡📄🎓VU🏛️VU

In a 9-pin DB-9 serial connector, which pin number is assigned to Carrier Detect (CD / DCD)?

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.2. Serial Port Interfacing and RS-232Easy🔁⭐💡📄🎓VU🏛️VU

In a 9-pin DB-9 serial connector, which pin number is assigned to Signal Ground (GND)?

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.2. Serial Port Interfacing and RS-232Easy🔁⭐💡📄🎓VU🏛️VU

In a 9-pin DB-9 serial connector, which pin number is assigned to Ring Indicator (RI)?

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.2. Serial Port Interfacing and RS-232 SignalsEasy🔁⭐💡📄🎓VU🏛️VU

In a standard 9-pin DB-9 serial port connector, Data Set Ready (DSR) is assigned to which pin number?

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.2. Serial Port Interfacing and RS-232 SignalsEasy🔁⭐💡📄🎓VU🏛️VU

In a standard 9-pin DB-9 serial port connector, Clear To Send (CTS) is assigned to which pin number?

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.2. Serial Port Interfacing and RS-232 SignalsEasy🔁⭐💡📄🎓VU🏛️VU

In a 9-pin DB-9 serial connector, Carrier Detect (CD / DCD) is assigned to which pin number?

Q10

❓ MCQ📘 CS401📑 Lec 10🏷️ 10.2. Serial Port Interfacing and RS-232 SignalsEasy🔁⭐💡📄🎓VU🏛️VU

In a 9-pin DB-9 serial connector, Receive Data (RD / RXD) is assigned to which pin number?

Ch 10: Hardware Interrupts and PIC 8259

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

📖 Related CS401 - Computer Architecture and Assembly Language Programming Curriculum Units