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

[quote="Zoot"]signed byte (-127 to 127 )[/quote]

First "param" is either byte or word (unsigned). Second "param" is byte only, signed, as above. Result is unsigned.

FYI -- the code above works (I'm already using it).

Just figured there might be a more elegant way.

Since I'm tired today and not sure I'm explaining it decently, here's pseudo code to explain:

[code]x = some byte value from 0 to 255
y = some byte value from -127 to 127
z = result

z = x + y
if ( z < 0 ) {
  z = 0
} elseif ( z > 255 ) {
  z = 255
}[/code]

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