convert to lower case string

job_derink

pls..i need sorce codes in assembly language that convert a capital letterword to lower case letterword..

i already have codes in converting lower case to uppercasecapital leeter or word..

but the first one i dont have yet..pls..help i need badly...

thanks..

job_derink@yahoo.com

anthrax11

: pls..i need sorce codes in assembly language that convert a capital letterword to lower case letterword..
:
: i already have codes in converting lower case to uppercasecapital leeter or word..
:
: but the first one i dont have yet..pls..help i need badly...
:
: thanks..
:
: job_derink@yahoo.com
:
[code]
lea si, Input

; Lower- to uppercase (set bit 5):
or byte [si], 32

; Upper- to lowercase (clear bit 5):
and byte [si], (255-32)[/code]

AsmGuru62

: : pls..i need sorce codes in assembly language that convert a capital letterword to lower case letterword..
: :
: : i already have codes in converting lower case to uppercasecapital leeter or word..
: :
: : but the first one i dont have yet..pls..help i need badly...
: :
: : thanks..
: :
: : job_derink@yahoo.com
: :
: [code]
: lea si, Input
:
: ; Lower- to uppercase (set bit 5):
: or byte [si], 32
:
: ; Upper- to lowercase (clear bit 5):
: and byte [si], (255-32)[/code]
:
[blue]It is a good idea to check first if this byte is really the uppercase or lowercase letter. Using this code on ANY letter (like '0') will be not successfull.[/blue]

job_derink

thank you wso much..i find it hard to understand it...
this is the code in convertig lowercase to uppercase

mov ah,[si]
and ah,11011111b
mov [si],ah
inc si

i need the one that converts the uppercase to lowercase..
pls,...thanks again..

AsmGuru62

[code]
: mov ah,[si]
: or ah,00100000b
: mov [si],ah
: inc si
[/code]