ex5p10.asm

来自「用于DSK5416的程序」· 汇编 代码 · 共 32 行

***********************************************************************
*
*  This program computes the signed sum of data memory locations
*  from address 410h to 41fh. The result is placed in A. 
*
*	A = dmad(410h) + dmad(411h) + ......... dmad(41fh)
*
************************************************************************

        .mmregs
        .global  _c_int00

        .text

_c_int00:
        STM #10H, AR2               ; Initialize counter AR2 = 10h
        STM #410H, AR1              ; Initialize pointer AR1 = 410h     
        LD #0H, A                   ; Initialize sum A = 0
        SSBX SXM                    ; Select sign extension mode
	
START:
        ADD *AR1+, A                ; Add the next data value	    
        BANZ START, *AR2-           ; Repeat if not done
        NOP                         ; No Operation

        .end