asm2.asm

数字信号处理DSP实验的源代码

         .title  "asm.asm"
         .mmregs
        
         .bss     a,20
         .bss     x,20
         .bss     y,2          

STACK    .usect   "STACK",30

         .data
table:   .word  1,2,3,4,5,6,7,8,9,10,11,12
         .word   13,14,15,16,17,18,19,20
         .word   1,2,3,4,5,26,27,28,29,30
         .word   1,2,3,4,5,6,7,8,9,10
         .def     start
         .text  
start:   STM   #a,AR1
         RPT    #39
         MVPD  table,*AR1+
         LD     #0,B
         STM    #a,AR2
         STM    #x,AR3
         STM    #y,ar5
         STM    #4,BRC
         RPTB   done-1
         LD     *AR2+,T
         MPY    *AR3+,A
         ADD    A,B
done:    STH    B,*ar5+
         STL     B,*ar5
end:     b       end
        .end