dividing 24 bit constant

[kasapo]

hi,

how can i divide 24 or 32 bit constant value.

for example
hword= 0032
Lword=69cc

dividerW=0150

result ?

[Ingvar]

DIV32 does exactly that, it's in your manual.

[kasapo]

i know div32 do it.
but i don't know how use it.

as far as i read i cannot assign a constant to div32

div32 = 0032 69CC

the only way is getting the constant value by multiplying by two words then divide it.

constant = x*y
result = div32 z


am i right ?

[Acetronics2]

No !!!

Mel has already given the solution here, in this forum !!!

Alain from Mel's fan club ...

[kasapo]

hi again,

acetronics can you tell me how can i do that or what is the subject of the threat that my question's answer is given.
i search but i cannot find

[Acetronics2]

Hi, kasapo

Here it is :

'************************************************* *****************************
'MACRO 32 bits
'************************************************* *****************************

ASM
Putmulresult macro const32

MOVE?CB low const32, R2
MOVE?CB low (const32 >> 8), R2+1
MOVE?CB low (const32 >> 16),R0
MOVE?CB low (const32 >> 24),R0+1
endm
ENDASM

and when needed :

@ putmulresult 60000000 or else ...
Vitesse = DIV32 dureetot
Vitesse = Vitesse / coeff

or sth ...looking like that !!!

I do not find anymore the thread nor ....

Alain

[Dwayne]

Hello Kaspo,

Here is a link:


http://www.picbasic.co.uk/forum/showthread.php?s=&threadid=24&highlight=DIV32

and

http://www.picbasic.co.uk/forum/showthread.php?s=&threadid=184&highlight=DIV32


Dwayne

[Acetronics2]

Just one thing ...

It worked pretty well on a 16F84, but NOT Well on a 16F628 ...

a paging problem somewhere ???

Alain

[kasapo]

thanks for your help.
in my application sometimes result is greater than 16 bit . so i can not get the expected result. i get FFFF
for example
@ putmulresult 2236920 or else ...
resultw = DIV32 xxxx

if xxx smaller than 35 resultw is greater than 16 bit.

how can i solve this problem ?