Function 6522h Convert ASCIIZ String

mov dx, seg String

mov ds, dx

mov dx, offset String ;ds:dx points to string to convert

mov ax, 6522h ;Convert ASCIIZ String

int 21h

jc error_handler ;carry set means error

Convert ASCIIZ String (Function 6522h) converts each character in the specified string to an uppercase character using the current uppercase table.

Parameter

String

Points to a zero-terminated string.

Return Value

The function replaces the original characters in the string with the corresponding uppercase characters (if any).

See Also

Function 6520h Convert Character
Function 6521h Convert String