p364fdc.asl

<B>Award BIOS(Basic Input/Output System)(电脑启动时所必需)的源码</B>

Device(FDC0)	
{
        Name(_HID, EISAID("PNP0700")) 	// PnP Device ID
        Method(_STA,0)	
        { 
                Store(Zero,LDN_)
                If(ACTR) 
                {
                        Return(0x0F)
                }
                Else	
                {
                        If (LOr(IOAH,IOAL)) 
                        {
                                Return(0x05)
                        }	// return device present, not active
                        Else	
                        {
                                Return(0x00)
                        }
                } 	// return device not present
        } 	//end _STA method

        Method(_DIS,0)	
        {
                Store(Zero, LDN_)	//set logical device number for Floppy
                Store(Zero, ACTR)	//Set Activate Register to zero
                SLDM(DMCH, 0x4)		//R01
                DISD(0x03)		//R01
        }	//end _DIS method

        Method(_CRS,0)	
        {
                Name(BUF0,Buffer()
                {
                        0x47, 			//IO Port Descriptor
                        0x01, 			//16 bit decode
                        0xF2, 			//IO Port Range Minimum Base Low
                        0x03, 			//IO Port Range Minimum Base High
                        0xF2, 			//IO Port Range Maximum Base LOW
                        0x03, 			//IO Port Range Maximum Base High
                        0x01, 			//Base Alignment
                        0x04, 			//Length of contiguous IO Ports

                        0x47, 			//IO Port Descriptor
                        0x01, 			//16 bit decode
                        0xF7, 			//IO Port Range Minimum Base Low
                        0x03, 			//IO Port Range Minimum Base High
                        0xF7, 			//IO Port Range Maximum Base LOW
                        0x03, 			//IO Port Range Maximum Base High
                        0x01, 			//Base Alignment
                        0x01, 			//Length of contiguous IO Ports

                        0x22, 			//IRQ Descriptor
                        0x40, 			//IRQ Mask Lo=bit 6
                        0x00, 			//IRQ Mask High

                        0x2A, 			//DMA Descriptor
                        0x04, 			//DMA Mask CH2
                        0x00, 			//DMA Channel Speed Support

                        0x79, 			//end tag
                        0x00, 			
                })

                CreateByteField (BUF0, 0x02, IOLO)
                CreateByteField (BUF0, 0x03, IOHI)
                CreateByteField (BUF0, 0x04, IORL)
                CreateByteField (BUF0, 0x05, IORH)
                Return(BUF0) 
        } 	// end _CRS method

        Name(_PRS,Buffer()
        {
                0x30,

                0x47, 			//IO Port Descriptor
                0x01, 			//16 bit decode
                0xF2, 			//IO Port Range Minimum Base Low
                0x03, 			//IO Port Range Minimum Base High
                0xF2, 			//IO Port Range Maximum Base LOW
                0x03, 			//IO Port Range Maximum Base High
                0x01, 			//Base Alignment
                0x04, 			//Length of contiguous IO Ports

                0x47, 			//IO Port Descriptor
                0x01, 			//16 bit decode
                0xF7, 			//IO Port Range Minimum Base Low
                0x03, 			//IO Port Range Minimum Base High
                0xF7, 			//IO Port Range Maximum Base LOW
                0x03, 			//IO Port Range Maximum Base High
                0x01, 			//Base Alignment
                0x01, 			//Length of contiguous IO Ports

                0x22, 			//IRQ Descriptor
                0x40, 			//IRQ Mask Lo=bit 6
                0x00, 			//IRQ Mask High

                0x2A, 			//DMA Descriptor
                0x04, 			//DMA Mask CH2
                0x00, 			//DMA Channel Speed Support

                0x38,

                0x79, 			//end tag
                0x00,
        }) 				// end _PRS method

        Method(_SRS,1)	
        {
                CreateByteField (Arg0, 0x02, IOLO) 	//IO Port Low
                CreateByteField (Arg0, 0x03, IOHI) 	//IO Port High
                CreateWordField (Arg0, 0x02, IOAD)	//R01
                CreateWordField (Arg0, 0x19, IRQW) 	//IRQ low
                CreateByteField (Arg0, 0x1C, DMAV) 	//DMA
                Store(Zero, LDN_)
                Store(One, ACTR)
                SLDM(DMCH, DMCH)      	//R01
                CKIO(IOAD,0x03)		//R01
        } 	// end of _SRS method
}	// end of FDC0 device