A more program space efficient way of doing ta whole heap of IFs????

[Demon]

Darrel,

Let me ask a very dumb question here about your ELSEIF program . Lets say for example that variable supply_in= 251. Does the program exits the IF..ENDIF block after it encounters the lines

ELSEIF supply_in> 250 then
max_duty = 155
...

That one''s easy (programmer by trade), it exits the nested IFs after assigning 155.

[rsocor01]

That one''s easy (programmer by trade), it exits the nested IFs after assigning 155.

Ooh, I see. Thank you Robert.

[Demon]

When in doubt, use debug feature.

If you don't have a debug feature (using Wordpad instead of an IDE), then make one up. Just put in a bunch of LEDs on empty ports, and then make them blink different ways in different places in your code.

Or even better, get the easiest LCD on the market, the HD44780, and send debug messages (abbreviated syntax, just for example):

 
LCDOUT "Program start", var1, var2
 
Label_A:
  LCDOUT "Label A", var1, var2
  Program logic...
  IF var1 < var2 then goto Label_A
 
Label_B:
  LCDOUT "Label B", var1, var2
  More program logic...
  IF var1 < var2 then goto Label_B
 
LCDOUT "Program end", var1, var2

We do something similar as mainframe programmers; it's called using DISPLAY statements. There is no limit to what you can use as a debug feature. If it works for you, then it's perfect.