Function 03h    Read Cursor Position - return the position of the cursor 
entry   AH      03h 
	BH      page number 
		00h     in graphics modes 
		03h     in modes 2 & 3 
		07h     in modes 0 & 1 
return  CH      top line for cursor    (bits 4-0) 
	CL      bottom line for cursor (bits 4-0) 
	DH      row number    (Y=0-24) 
	DL      column number (X=0-79 or 0-39) 
 
Sample Code:
\Asm\Lib\BIOS.INC -@BIOSVidCurGet	  MACRO page