Extracting value from a hex number

[retepsnikrep]

I have a variable hex number in a Picaxe byte variable. In this example lets assume it is $14

How can I extract the value of the right hand digit i.e. 4 into another byte variable? Masking?

 

[Dippy]

Several ways, do remember that with hex that the left digit and right digit tie up with left and right 4 bits of the byte ... now you can do it yourself eh?

 

[retepsnikrep]

Thanks for the pointer

variable = $14 AND $0F

 

[westaust55]

and if you want just the left digit (each 4 bits is called a nybble or nibble)

answer = $14 / 16 = $01

The divide by 16 shifts the value 4 bits to the right and fills the left nybble with zeros.

 

[Dippy]

or bitwise or >> ... or, in other places, an alias - so many ways to skin a cat eh?
But, best to work it out yourself rather than spoonfeed huh?

 

[westaust55]

true.

Reason I did not mention >>
is trying to keep things more universal
and the >> is only available for X1 and X2 parts

 

[Dippy]

Unlike my flies, I like to keep my options open

 

[slimplynth]

Quite refreshing on a warm day though

 

[Dippy]

Not if you accidentally walk into a dwarf!

 

[slimplynth]

For the dwarf or me?