Mell What is 0AH in assembly?
0Ah is the hexadecimal constant for the Line Feed character in ASCII, often abbreviated LF. 24h is the hexadecimal constant for the ‘$’ character in ASCII.
What is carriage return in assembly language?
Carriage Return Character The Carriage Return (CR) character moves the cursor to the beginning of the line without advancing to the next line.
What is 04H?
04H = Length of Array. ? = Element to be DUPLICATED (DUP) Declaring an array with Same value. Eg.
What is PUTC in Intel 8086 program?
PRINTN string – macro with 1 parameter, prints out a string. The same as PRINT but automatically adds “carriage return” at the end of the string. PUTC char – macro with 1 parameter, prints out an ASCII char at current cursor position.
What is 30H in assembly language?
SUB AL,30H means subtracting 30H from AL. MOV NUM1,AL means move value in AL register into variable NUM1. The above two line code is used to PRINT the String or Message of the address present in DX register i.e. for MSG2.
How does CMP work in assembly?
The CMP instruction compares two operands. It is generally used in conditional execution. This instruction basically subtracts one operand from the other for comparing whether the operands are equal or not. It does not disturb the destination or source operands.
Is carriage return the same as new line?
The /r stands for “return” or “carriage return” which owes it’s history to the typewriter. A carriage return moved your carriage all the way to the right so you were typing at the start of the line. The /n stands for “new line”, again, from typewriter days you moved down to a new line.
What is difference between LF and CRLF?
Description. The term CRLF refers to Carriage Return (ASCII 13, \r ) Line Feed (ASCII 10, \n ). For example: in Windows both a CR and LF are required to note the end of a line, whereas in Linux/UNIX a LF is only required. In the HTTP protocol, the CR-LF sequence is always used to terminate a line.
Why do we use mov ah 4CH?
MOV AH, 4CH means store (or “move”) the hexadecimal value 4C into register AH . INT 21H means invoke the interrupt identified by the hexadecimal number 21 . In MS-DOS, invoking interrupt 21h while AH = 4Ch causes the current process to terminate and uses the value of register AL as the exit code of the process.
What is int21h?
3 Answers. INT 21H will generate the software interrupt 0x21 (33 in decimal), causing the function pointed to by the 34th vector in the interrupt table to be executed, which is typically an MS-DOS API call. This simply means that you are using function 01h of the Interrupt type 21…
Which Assembler is used for 8086 programming?
8086 microprocessor assembly language programs LEA BX, VAR1 //get address of VAR1 in BX.
What is org100h?
“org <100h>” instructs the compiler with the to-be runtime information to evaluate addresses, as binary image will be loaded with offset (and first 100h bytes possibly to be used for PSP etc. in your context)
What is the meaning of 0Ah, 0Dh in assembly language?
Discover the factors to consider & make informed decisions. Access the guide. In your above example, msg1 is the identifier for the string, db means declare byte. 0ah, 0dh are nothing but Hexadecimal equivalents of 10 and 13.
What does ” MOV Ah, 4CH ” in assembly language?
MOV AH, 4CHmeans store (or “move”) the hexadecimal value 4Cinto registerAH.
How many operands can an assembly language have?
An assembly language can have between zero to three operands (depending on the type of instruction) Types of operand : constant (immediate value) Example: 96, 2005h, 101011010b constant expression Example: 2+4 register Example: EAX, EBX, AX, AH memory(data label)
What’s the difference between OAH and Odh in Excel?
A combination of the two thus moves the cursor to the beginning of the next row of the screen. oah is for line feed (moves to next output line) & odh is for carriage return. Carriage return has ASCII value 13 or 0XD & Linefeed has value 10 or 0XA. Carriage return means to return to the beginning of the current line without advancing downward.