What is the function of INT 10h in assembly language?
Use INT 10H function calls to: – Clear the screen. – Set the cursor position. – Write characters to the screen in text mode. – Draw lines on the screen in graphics mode.
What is the function of 02h of INT 21h?
INT 21h – The general function despatcher
| Action: | Outputs a character to the standard output device. I/O can be re-directed, but prevents detection of ‘disc full’. |
|---|---|
| On entry: | AH = 02h DL = 8 bit data (usually ASCII character) |
| Returns: | Nothing |
| Notes: |
What is the function of 02H of INT 21h?
What is 09h in assembly language?
DOS function 09h: display a string of characters whose offset is specified by DX. AH : 09h. DX : offset of MESSAGE.
What is the function of 01h of INT 21h?
where 01h is as you said is to read character from standard input, with echo, result is stored in AL. if there is no character in the keyboard buffer, the function waits until any key is pressed. It comes under type 21h of various interrput tables, hence the lines of code goes like these as you mentioned.
What is the function of 4CH of INT 21h?
INT 21h – The general function despatcher
| Action: | Writes a string to the display. |
|---|---|
| On entry: | AH = 09h DS:DX = segment:offset of string |
| Returns: | Nothing |
| Notes: | The string must be terminated by the $ character (24h), which is not transmitted. Any ASCII codes can be embedded within the string. |
What is the function of 4ch of INT 21h?
What does INT 21h accomplishes if ah contains 4c H?
on ah=4ch int 21h , the program will terminate control to the operating system. (end the program) And int 21h is a dos interrupt.
What does the INT 21h accomplish if ah contains 4CH?
int 21h is the second line of assembler code. The software interrupt 21h is called. This interrupt, when given the value of 4ch in AH (as is the case here), causes the program to exit immediately. END denotes the end of the program.
What is the function of the interrupt INT 03h?
INT 03h (3) Breakpoint INT 3 is the breakpoint interrupt. Debuggers use this interrupt to establish breakpoints in a program that is being debugged. This is normally done by substituting an INT 3 instruction, which is one byte long, for a byte in the actual program.
What is function of the MOV a #21h?
INT 21H functions
| Function number | Description |
|---|---|
| 01h e.g. mov ah,01h int 21h | Keyboard input with echo: This operation accepts a character from the keyboard buffer. If none is present, waits for keyboard entry. It returns the character in AL. |
What is the action of function 01h of INT 21h?
What does INT 10h mean in BIOS?
INT 10h, INT 10H or INT 16 is shorthand for BIOS interrupt call 10 hex, the 17th interrupt vector in an x86 -based computer system. The BIOS typically sets up a real mode interrupt handler at this vector that provides video services.
What does the 0eh interrupt 10h do?
bios interrupt 10h function 0Eh prints a character at the current cursor position and advance the cursor by 1. © 4beginner.com All Rights Reserved.
What is the meaning of INT 10h in AutoCAD?
INT 10h / AH = 0Ah -write Character only at cursor position. AL = Character to Display. BH = page number. INT 10h / AH = 0CH – Change color for a Single pixel. CX = column. DX = row. INT 10h; set graphics video mode. INT 10h; set pixel. INT 10h / AH = 0Dh – get color of a Single pixel.
What is the meaning of INT 10h / ah / al?
INT 10h / AH = 06h – scroll up window. INT 10h / AH = 07h – scroll down window. AL = number of lines by which to scroll (00h = Clear entire window). BH = attribute used to write Blank lines at bottom of window. CH, CL = row, column of window’s upper left corner. INT 10h / AH = 08h – read Character and attribute at cursor position. BH = page number.