In SX Microcontrollers, SX/B Compiler and SX-Key Tool, dabayliss wrote:

Fair enough - if the goal is to pull people into the Assembly then the more straightforward translation makes sense.
However :) given I finally remembered I will just note the 2 word for-loop 'trick' - where you do -

  MOV seconds_LSB,#1             ; for seconds = 1 to 1000
  CLR seconds_MSB               
__FOR_seconds_1:                

  INC seconds_LSB                ; next
  ADDB seconds_MSB,Z            
  CJB seconds_MSB,#(1000 >> 8),@__FOR_seconds_1
  CJA seconds_MSB,#(1000 >> 8),@__NEXT_seconds_1
  CJBE seconds_LSB,#(1000 & 255),@__FOR_seconds_1
__NEXT_seconds_1:               


you can -
  mov no1,#4
  mov w,#1000-3*256+1
  skip
oloop:
  mov w,#255
  mov no,w
loop:
  djnz no,Loop
  djnz no1,oloop

saves about 50% of the code and reduce timings somewhat ....

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=323767#m324135

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2009 (http://www.dotNetBB.com)