one simplest way is to use #pragma ASM and #pragma ENDASM.

For instance on a kiel compiler:


/*
............
C code here...
...........
*/
#pragma ASM
/*
........
assembly code here
........
*/
#pragma ENDASM
/*
............
C code here...
...........
*/


But this code needs to be converted into .a51 file before creating a hex file. In Keil this can be done by setting the target options. Refer to the keil assembler manual for this.


regards,
sarma