Scope (\_SB.PCI0.PEG0.PEGP)
    {
        OperationRegion (VBOR, SystemMemory, 0x7AE01018, 0x00040004)
        Field (VBOR, DWordAcc, Lock, Preserve)
        {
            RVBS,   32, 
            VBS1,   262144, 
            VBS2,   262144, 
            VBS3,   262144, 
            VBS4,   262144, 
            VBS5,   262144, 
            VBS6,   262144, 
            VBS7,   262144, 
            VBS8,   262144
        }
    }

...

        Method (_ROM, 2, Serialized)  // _ROM: Read-Only Memory
        {
            Name (_T_0, Zero)  // _T_x: Emitted by ASL Compiler
            Local0 = Arg0
            Local1 = Arg1
            Name (VROM, Buffer (Local1)
            {
                 0x00                                             /* . */
            })
            If (Local1 > 0x1000)
            {
                Local1 = 0x1000
            }

            If (Arg0 > RVBS)
            {
                Return (VROM) /* \_SB_.PCI0.PEG0.PEGP._ROM.VROM */
            }

            Local2 = (Arg0 + Arg1)
            If (Local2 > RVBS)
            {
                Local1 = (RVBS - Local0)
            }

            Divide (Local0, 0x8000, Local3, Local4)
            While (One)
            {
                _T_0 = Local4
                If (_T_0 == Zero)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS1
                }
                ElseIf (_T_0 == One)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS2
                }
                ElseIf (_T_0 == 0x02)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS3
                }
                ElseIf (_T_0 == 0x03)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS4
                }
                ElseIf (_T_0 == 0x04)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS5
                }
                ElseIf (_T_0 == 0x05)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS6
                }
                ElseIf (_T_0 == 0x06)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS7
                }
                ElseIf (_T_0 == 0x07)
                {
                    Local5 = \_SB.PCI0.PEG0.PEGP.VBS8
                }

                Break
            }

            Local4 *= 0x8000
            Local0 -= Local4
            Mid (Local5, Local0, Local1, VROM) /* \_SB_.PCI0.PEG0.PEGP._ROM.VROM */
            Return (VROM) /* \_SB_.PCI0.PEG0.PEGP._ROM.VROM */
        }