IF Then help?

[vk6bgn]

Hello All,
Possibly someone can help me rid my program of zillions of "If Then" statements.

I have 8) 5 volt relays (via 2N7000's) connected to output pins B.0 - B.7 on my PICAXE 18M2 chip. I capture DTMF tones (from a key pad ) in byte b0. This is a number between 1 and 8, to determine which of the 8 relays to turn on or off. (only one relay on or off at a time!) In byte b1 is (a key press) either the number 0 or 1. You guessed it, 0 = off, 1 = on.

I currently have it pretty much working but I have 8 IF THEN's to determine which relay to turn on and 8 IF THEN's to determine which relay to turn off.

Example:
If b0 = 4 And b1 = 1 Then High b.3 (turns relay #4 on)

If b0 = 7 And b1 = 0 Then Low b.6 (turns relay #7 off)

Couldn't the 8 IF/THEN statements to turn on relays be reduced to something like HIGH B.b0 or HIGH B.#b0 ??? Wishful thinking Obviously these produce syntax errors. But certainly there is a better way then a zillion IF/THEN's .

And again the same for 8 IF/THEN statements to turn off relays, LOW B.b0 or LOW b.#b0

Famous quote (from me) "I bet it's simple, but sometimes simple is too hard for me".

Thanks in advance.
"Ham Radio Addict"

 

[eclectic]

Might be best if you post your present code.
Then folks can work from there.

e

 

[Technical]

dec b0
if b1 = 1 then
      high b0
else
     low b0
end if

 

[Michael 2727]

Look Up tables with all of the variations available ?

 

[Dippy]

If you have your relay o/puts on a whole Port can't you bitwise the b1 (on/off) value onto the port value and just output the port value?
Maybe I've got wrong end of stick as I've only given it 20 seconds of thought

 

[vk6bgn]

dec b0
if b1 = 1 then
      high b0
else
     low b0
end if

Thanks Technical.... works a treat, spot on as usual. But I still don't understand where in your snippet of code the PICAXE chip knows the byte variable b0 is attached to portB? Why not an output on portC? Just curious.