write and read a value in COM 1 (0x3F8)

This is a simple program in c to write and read a value from COM 1.The question is how i write this code in asm.
#include <stdio.h>
#define com 0x3f8
int valoare;
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I suggest a good google on assembler op codes to get the commands needed to read and write to a port. Then it is just a matter of moving data values into registers and calling the command to read and write from the port. The tricky part will be outputing the results for which the easiest thing to do is use BIOS routines to print out a zero delimited string. All this can be found using google.

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