Convert a dword to a hexadecimal ASCIIZ string.

The destination buffer must be at least 9 bytes. 8 for the hexadecimal characters and 1 for the null terminated ASCIIZ string. (range 00000000..FFFFFFFF)

If the destination pointer does not provide a segment register, ES is assumed.

If a Code Label is provided for the destination pointer, then CS is assumed.

Examples:

    DWordToHex   es:di, dx:ax   ; convert dx:ax word pair to hex, store
                                ; at es:di
    DWordToHex   di, cx:bx      ; convert cx:bx word pair to hex, store
                                ; at es:di
    DWordToHex   ds:si, dx:ax   ; convert dx:ax word pair to hex, store
                                ; at ds:si
    DWordToHex   MY_BUF, bx:cx  ; convert bx:cx word pair to hex, store
                                ; at cs:MY_BUF
    DWordToHex   MY_BUF, [si]   ; convert dword at [ds:si] to hex, store
                                ; at memory location cs:MY_BUF