here is the sample an 8086 assembly language program to display a character. 

mov ah,09
mov al,4d
int 10

this will display M



INT 10 - VIDEO - WRITE CHARACTER AND ATTRIBUTE AT CURSOR POSITION
	AH = 09h
	AL = character to display

For the attribute and the whole thing U need to check it some else for the details. the date got corrupted. :)