data segment
a dw 0202h
b dw 0408h
c dw ?
data ends
code segment
assume cs:code,ds:data
start:
mov ax,data
mov ds,ax
mov ax,a
mov bx,b
add ax,bx
mov c,ax
int 3
code ends
end start
Output
C:\TASM>masm an16add.asm
Microsoft (R) Macro Assembler Version 5.00
Copyright (C) Microsoft Corp 1981-1985, 1987. All rights reserved.
Object filename [an16add.OBJ]:
Source listing [NUL.LST]:
Cross-reference [NUL.CRF]:
50402 + 450254 Bytes symbol space free
0 Warning Errors
0 Severe Errors
C:\TASM>link an16add.obj
Microsoft (R) Overlay Linker Version 3.60
Copyright (C) Microsoft Corp 1983-1987. All rights reserved.
Run File [AN16ADD.EXE]:
List File [NUL.MAP]:
Libraries [.LIB]:
LINK : warning L4021: no stack segment
C:\TASM>debug an16add.exe
-g
AX=060A BX=0408 CX=0022 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000
DS=0B97 ES=0B87 SS=0B97 CS=0B98 IP=0011 NV UP EI PL NZ NA PE NC
0B98:0011 CC INT 3
-d 0B97:0000
0B97:0000 02 02 08 04 0A 06 00 00-00 00 00 00 00 00 00 00 ................
0B97:0010 B8 97 0B 8E D8 A1 00 00-8B 1E 02 00 03 C3 A3 04 ................
0B97:0020 00 CC 86 72 FF 77 15 8A-86 70 FF 2A E4 50 B8 FD ...r.w...p.*.P..
0B97:0030 05 50 FF 36 24 21 E8 77-63 83 C4 06 FF 36 24 21 .P.6$!.wc....6$!
0B97:0040 B8 0A 00 50 E8 47 5E 83-C4 04 5E 8B E5 5D C3 90 ...P.G^...^..]..
0B97:0050 55 8B EC 81 EC 84 00 C4-5E 04 26 80 7F 0A 00 74 U.......^.&....t
0B97:0060 3E 8B 46 08 8B 56 0A 89-46 FC 89 56 FE C4 5E FC >.F..V..F..V..^.
0B97:0070 26 8A 47 0C 2A E4 40 50-8B C3 05 0C 00 52 50 E8 &.G.*[email protected].
-q
C:\TASM>
What is dw and db in the programm
DW stands for define word. When we require 16 bit date, we use DW.
DB stands for define byte. When 8bit data is required, we use DW.
hi
db=define byte
dw=define word
These are assembler directives
dw = define word
db = define byte
used to specify the size of the data variable
Why have u took int 3
int 3 is used to terminate statements written above it.
thank you
WHAT IF CARRY GENERATED…..? THIS PROGRAM DOESNT HOLD GOOD FOR IT
int 21h is the last (isn’t it)
int 3 and int 21h both works fine, after all int 3 is used to terminate statements above it and int 21h is used to terminate whole program
What is int in int 3 and int 21h?
What is actually 16bit number?? What is history about it why 16bit no contain 4digits only
16=2^[4], hope you can understand further
can the [data segment] be defined as [.data]
this is done in NASM not TASM
db=define byte
dw=define word
Give the flowchart for program
tthankss bhau
What is int in int 3 and int 21h?
bhot hard bhot hard
What is meant by int in int 3 and int 21h…
perfet website