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

Bill,

Do give PASM a try -- it's a lot of fun and the ability to control the C and Z flags use is a joy an allows one to program with fewer jumps -- nearly an if-then-else construct.  For example, here's a bit of code from an RGB LED controller:

[code]red                     test    rlevel, rlevel          wz      ' test level for zero
                if_z    andn    outa, rmask                     ' if 0, turn led off
                if_z    jmp     #green
                        cmp     cycle, rlevel           wc      ' check pwm level
                if_b    or      outa, rmask                     ' if still on, enable led
                if_ae   andn    outa, rmask                     ' else disable[/code]

Translating to BASIC:

[code]Red:
  IF rlevel = 0 THEN
     RedLed = IsOff
  ELSE
    IF rlevel < cycle
      RedLed = IsOn
    ELSE
      RedLed = IsOff
   ENDIF
  ENDIF

Green:[/code]
-- in my mind, the PASM code is cleaner than the "nice" BASIC!

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


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=373927#m374311

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)