inserting assembly code in c language code

Yes, Neil. I agree with you. Sorry for forgetting it. Mehboob once you insert your code in between #pragma asm ... #pragma endasm directive, you need to set 2 options for that perticular file, which are:
1. Generate Assembler SRC file
2. Assemble SRC file

Thanks.
Pankaj

Hi thanks for replying but i m still recieving some problems
here is my code
void main(void)
{
serial_init();
P2=0X33;
#pragma asm

DELAY:
MOV R4,#4
DEL:

MOV R2,#00F3H
DJNZ R2,$
DJNZ R4,DEL
RET

L_DELAY:
MOV R1,#10
LARGE_DELAY:

MOV R4,#35
L_DEL:

MOV R2,#00FFH
DJNZ R2,$
DJNZ R4,L_DEL
DJNZ R1,LARGE_DELAY
#pragma endasm
}
i checked both the options you mentioned but when i build my code it will compile successfully with no error but with one warning.
warning is:
L1: unresolved external symbol
symbol: ?c_startup
module: test.obj

what is this i could not be able to find it out. please help

Mudassir,

When you tell uVision to have the compiler generate ASM and then assemble them, some of the things it would automatically do for you don't happen. The upshot of it is this: You must manually copy and add the file INIT.A51 that is included with Keil's package to your project. Then things will compile correctly for you.

thanks for replying

but it could not resolve my problem that warning still occurs, i have added init.a51 to my project and copied it to the project folder.
please tell me some other way to tackle with this problem.

hi,

ASM and ENDASM directives indicate the beginning of a block of source text to merge into the .SRC file.

In your case: if you need with delay or long delay and you wish to write it with assembler then either create separate file with assembler code (.a51) or do it like this:

void my_delay()
{
#pragma asm

DELAY:
MOV R4,#4

DEL:
MOV R2,#00F3H
DJNZ R2,$
DJNZ R4,DEL
#pragma endasm
}

void main(void)
{
serial_init();
P2=0X33;
#pragma asm

DELAY:
MOV R4,#4
DEL:

MOV R2,#00F3H
DJNZ R2,$
DJNZ R4,DEL
RET            ; <- here is the error
; because it breaks C function and returns to not defined address
; due main() is root function which is not called from anywhere.

Thanks for reply but i followed your adivce but it did'nt work. actually i want to introduce assembly code in my c program because i want to insert a calculated delay in my program. so please any body kindly either tell me the way to do it in c or tell me the way to include assembly lines in my c code.
Bye

tell me the way to do it in c or tell me the way to include assembly lines in my c code.
Neither
Create a separate .a51 module and call the assembly code from your C

Erik

Mudassir,

Did you add STARTUP.A51 as well? I'm unable to reproduce the problem you're having. I can create a new project with only a main() function, set the options mentioned above, and then use pragma asm/endasm to insert some assembly statements. Mine gave the same warning, but when I added INIT.A51 (in addition to the already included STARTUP.A51), everything compiled fine.