Ch 17: Secondary Storage and Device Drivers

Which syntax and instruction are used in x86 assembly language to invoke a software interrupt?

int 0x21

In BIOS Low-Level Disk Services (INT 13h), what operation is performed when service function AH = 0x03 is requested?

mov ah, 0x03
int 0x13

Regarding data transmission directionality between the CPU, memory, and peripheral devices, the System Data Bus is:

True or False: The PUSH instruction increments the Stack Pointer (SP) by two before transferring a word operand to the stack.

push ax

Which 8088 instruction selects the peripheral (I/O) address space rather than the memory address space during CPU execution?

in al, dx

In operating system design, thread creation and thread pool initialization can be categorized as:

Which hardware IRQ line is assigned to the primary parallel port (LPT1) in standard IBM PC systems?

True or False: Both DS and ES segment registers can be used to access Video Memory, but assembly programmers commonly preserve DS for program data and use ES for Video RAM targeting.

mov ax, 0xb800
mov es, ax

How many total distinct characters are defined by the standard ASCII (American Standard Code for Information Interchange) character encoding set?

True or False: During a CALL operation in 8088 assembly language, the current value of the instruction pointer (IP) is automatically saved on the stack, and the target address of the CALL instruction is loaded into the instruction pointer.

call my_subroutine