Ch 12: Terminate and Stay Resident (TSR)

In-depth study of writing Terminate and Stay Resident (TSR) programs in assembly, preserving resident memory blocks, intercepting keyboard scancodes via INT 09h, and unhooking interrupt vectors cleanly.

127 Questions127 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 121 – 127 of 127 Questions

Page 13 of 13

Q121

❓ MCQ📘 CS401📑 Lec 12🏷️ 12.1. BIOS Video ServicesEasy🔁⭐💡📄🎓VU🏛️VU

In VGA text mode, a character font matrix of dimensions 8x16 pixels is stored using how many bytes per character pattern?

A.2
B.4
C.8
D.16

Q122

❓ MCQ📘 CS401📑 Lec 12🏷️ 12.1. BIOS Video ServicesEasy🔁⭐💡📄🎓VU🏛️VU

Software interrupt vector INT 10h is reserved for accessing which system services?

💻 assembly Snippet

mov ah, 0x0e
mov al, 'A'
int 0x10

A.RAM
B.Disk
C.BIOS video
D.DOS video

Q123

❓ MCQ📘 CS401📑 Lec 12🏷️ 12.1. BIOS Video ServicesEasy🔁⭐💡📄🎓VU🏛️VU

In computer graphics and BIOS interfaces, video services and display modes are broadly classified into how many main categories?

Q124

📝 Short Q📘 CS401📑 Lec 12🏷️ 12.1. VESA GraphicsMedium🔁⭐💡📄🎓VU🏛️VU

Give the name and function code of any one standard VESA BIOS Extension (VBE) service.

💻 assembly Snippet

mov ax, 0x4f01
mov cx, 0x0101  ; Mode number
int 0x10

Q125

❓ MCQ📘 CS401📑 Lec 12🏷️ 12.1. 32-Bit x86 ArchitectureEasy🔁⭐💡📄🎓VU🏛️VU

In 32-bit x86 architecture, the lower 16 bits of the 32-bit extended accumulator register EAX are directly referenced as:

A.AX
B.BX
C.EAX
D.None of the above

Q126

📝 Short Q📘 CS401📑 Lec 12🏷️ 12.1. 32-Bit x86 ArchitectureMedium⭐💡📄🎓VU🏛️VU

What are the 32-bit general-purpose registers in IA-32 (x86) architecture, and what are the primary operational functions of EAX, ECX, EDX, and EBX?

💻 assembly Snippet

; Example 32-bit x86 register usage
add eax, 100       ; Compact 5-byte instruction encoding
mov ecx, 10        ; Initialize loop counter
my_loop:
loop my_loop       ; Automatically decrements ECX until 0

Q127

📝 Short Q📘 CS401📑 Lec 12🏷️ 12.1. 32-Bit x86 ArchitectureMedium⭐💡📄🎓VU🏛️VU

What are the specialized functions of the 32-bit IA-32 pointer and index registers: ESP, EBP, ESI, and EDI?

💻 assembly Snippet

; Example stack frame setup and string block copy
push ebp
mov ebp, esp        ; Establish stack frame base
mov esi, src_buffer ; ESI points to source string
mov edi, dst_buffer ; EDI points to destination buffer
rep movsd           ; Copy string DWORDs from ESI to EDI

Ch 12: Terminate and Stay Resident (TSR)

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

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