MPEG Frame Header Decoder

[Sasquadge]

So my program is supposed to ask the user for a hex and decode the Mpeg for the Version, Layer Description, and sampling rate. So My problem is getting the smapling rate any suggestions?

TITLE CS2650 Assembler Assignment #3 Template

; Student Name: Cody Squadroni
; Assignment Due Date: 11/25/2012

INCLUDE Irvine32.inc
.data
;--------- Enter Data Here
vSemester BYTE "Fall",0
vAssignment BYTE "Assembler",0
vName BYTE "Name",0
vMP3Header BYTE "Enter MP3 Frame Header in Hex: ",0
vMpeg25 BYTE "MPEG Version 2.5",0
vMpeg20 BYTE "MPEG Version 2.0",0
vMpeg10 BYTE "MPEG Version 1.0",0
vMpegRE BYTE "MPEG Reserved",0
vLayerRE BYTE "      Reserved",0
vLayerIII BYTE "      Layer III",0
vLayerII BYTE "      Layer II",0
vLayerI BYTE "      Layer I",0

.code
main PROC
;--------- Enter Code Below Here
    call Clrscr
    call DisplaySemester
    call DisplayAssignment
    call DisplayName
    call ReadMP3Header
    call DisplayVersion
    call DisplayLayer
    ;Call SamplingRate

;Semester
    DisplaySemester:
        mov dh, 12
        mov dl, 12
        call Gotoxy
        mov edx, OFFSET vSemester
        call    WriteString

;Assignment
    DisplayAssignment:
        mov dh, 13
        mov dl, 12
        call Gotoxy
        mov edx, OFFSET vAssignment
        call    WriteString

;Name
    DisplayName:
        mov dh, 14
        mov dl, 12
        call Gotoxy
        mov edx, OFFSET vName
        call    WriteString

;MP3 Header
    ReadMP3Header:
        mov dh, 16
        mov dl, 12
        call Gotoxy
        mov edx, OFFSET vMP3Header
        call    WriteString
        call    ReadHex

;Version
    DisplayVersion:
        mov ecx, eax
                ;AAAAAAAAAAABBCCDEEEEFFGHIIJJKLMM
        and eax, 00000000000110000000000000000000b
        shr eax, 19

        cmp eax, 00b
        jz dMpeg25

        cmp eax, 01b
        jz dMpegRE

        cmp eax, 10b
        jz dMpeg20

        mov edx, offset vMpeg10
        jmp DisplayString

    dMpeg25:
        mov edx, offset vMpeg25
        jmp DisplayString

    dMpegRE:
        mov edx, offset vMpegRE
        jmp DisplayString

    dMpeg20:
        mov edx, offset vMpeg20
        jmp DisplayString

    DisplayString:
        call WriteString

;Layer

    DisplayLayer:
        mov eax, ecx
                ;AAAAAAAAAAABBCCDEEEEFFGHIIJJKLMM
        and eax, 00000000000001100000000000000000b
        shr eax, 17

        cmp eax, 00b
        jz dLayerRE

        cmp eax, 01b
        jz dLayerIII

        cmp eax, 10b
        jz dLayerII

        mov edx, offset vLayerI
        jmp LayerDisplay

    dLayerRE:
        mov edx, offset vLayerRE
        jmp LayerDisplay

    dLayerIII:
        mov edx, offset vLayerIII
        jmp LayerDisplay

    dLayerII:
        mov edx, offset vLayerII
        jmp LayerDisplay

    LayerDisplay:
        call WriteString 

        ret
;Sampling Rating







call ReadChar
main ENDP

END main