var byte or var word?

Archiver · 2000-05-14 15:18

I got a questions, I been playing with my stamps on and off so I still
having a bit of trouble programing them, any way my question is on the var
command what is the diffrence between byte and word.
For example...
'Start example program
good var word
night var byte
etc...
'End example program
What is the diffrence?
Any info on this would help and yes i do have a manual (2 to be precise).

Chris Shuster
http://www.uhpage.com/cpuman
http://www.geocities.com/cpuman3

________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

Archiver · 2000-05-14 15:38

Say n is byte or nib

nib will only allow you to do a loop upto 15 if n is a nib

and upto 255 if n is a byte so with a word you can go to a higher number

nib is 4 byte is 8 and word is 16

Dan

Archiver · 2000-05-17 11:09

Hi Chris,
With the var command a certain space of the RAM gets allocated to
that variable.
If the var is given the size bit there are only 2 values that
variable can have, 0 or 1.
If the var is a nib (a nibble) the space allocated is 4 bits and you
have 2^4 or 16 values (0 to 15)
If the var is a byte the allocated space is 8 bits, giving 2^8 or 256
values (numbers 0 to 255)
If the variable is word, then you allocate 16 bits to that variable,
giving 2^16 or 65536 values (0 to 65535)

If your value of the variable "good" is in the range 0 to 255 you can
use both byte or word, but would be wasting RAM by using the word
alternative.
However you cannot use the nib alternative as its maximum is 15.

Hope that helps,
Regards,
Hans

--- In basicstamps@egroups.com, "Chris Shuster" <cpuman3@h...> wrote:
> I got a questions, I been playing with my stamps on and off so I
still
> having a bit of trouble programing them, any way my question is on
the var
> command what is the diffrence between byte and word.
> For example...
> 'Start example program
> good var word
> night var byte
> etc...
> 'End example program
> What is the diffrence?
> Any info on this would help and yes i do have a manual (2 to be
precise).
>
> Chris Shuster
> http://www.uhpage.com/cpuman
> http://www.geocities.com/cpuman3
>
>
______________________________________________________________________
__
> Get Your Private, Free E-mail from MSN Hotmail at
http://www.hotmail.com

var byte or var word?

Comments