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

Hey all,
   I've been playing around with the Stampworks examples with my SX28. I've been trying to keep with the spirit of each project and not cheat my way past the hard stuff :D

Today while working on example 5 i ran into the "DCD" command used by the basic stamps, and not available under sx/b.
[quote="Regarding DCD the basic Stamp manual"]
The Decoder operator (DCD) is a 2[sup]n[/sup] - power decoder of a four-bit value.
DCD accepts a value from 0 to 15, and returns a 16-bit number with the bit, described by value, set to 1. 
for example:

result VAR Word 
 result  =  DCD  12      ' Set bit 12  
DEBUG  BIN16 ?  result    ' Display result (%0001000000000000) 
[/quote]

I wrote this function, and the program works as described in Stampworks, but i wonder if i really got it "right" or just cheated.

[code]
' -----[ Variables ]-------------------------------------------------------
dcdIN    VAR   Byte
dcdOut   VAR   Word
' -----[Subs ]------------------------------------------------------------
DCD Func	1,2
[/code]

[code]
DCD:
  dcdIn = __PARAM1
  dcdOut = $0001
  Do While dcdIn > 1
        dcdOut = dcdOut << 1
        dec dcdIn
  Loop
RETURN dcdOut
[/code]

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