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Text File  |  1990-05-16  |  361 b   |  19 lines
  1.     .hlist
  2. /
  3. /----   multiply demo page 24 of 'programmers guide ...'
  4. /
  5. MULTIPLIER      =       w1
  6. PRODUCT_LO      =       w3
  7. PRODUCT_HI      =       w2
  8. COUNT           =       w0
  9. /
  10.     mov     $9,COUNT
  11.     clr     PRODUCT_HI
  12.     rcf
  13. 1:      rrc     PRODUCT_HI
  14.     rrc     PRODUCT_LO
  15.     bcc     2f
  16.     add     MULTIPLIER,PRODUCT_HI
  17. 2:      sob     COUNT,1b
  18.     ret
  19.