byucc.jhdl.platforms.util.readback.Xilinx.XC4000
Class XC4KBitstreamParams

java.lang.Object
  byucc.jhdl.platforms.util.readback.Xilinx.XC4000.XC4KBitstreamParams

public class XC4KBitstreamParams

extends java.lang.Object

This class is used to record the information about a specific XC4000 FPGA during the creation of a .rbentry file as well as provide a method for calculating the absolute offset of a readback state bit from the offset provided by the Xilinx Logical Allocation (.ll) file. The information this class records about a specific FPGA includes the PE type, the readback bitstream header length, the bit ordering within each byte, and the frame size. Further, this class defines constants for each supported Xilinx XC4000 part type as well as each part type's frame size and count. Further, constants for the number of bits in a byte and the trailer or postamble length are also defined. Several methods are defined to conveniently calculate the length of the bitstream in bits and bytes as well as provide the lengths of frames, the number of frames, and a String representing the Xilinx FPGA type.

Author:

Paul Graham

Field Summary

static int	BYTE_SIZE The length of a byte in bits.
static int	FRAME_COUNT_4006E The frame count for an XC4006E part type
static int	FRAME_COUNT_4010EX The frame count for an XC4010EX/XL part type
static int	FRAME_COUNT_40110XV The frame count for an XC40110XV part type
static int	FRAME_COUNT_4013E The frame count for an XC4013E part type
static int	FRAME_COUNT_4013EX The frame count for an XC4013EX/XL part type
static int	FRAME_COUNT_4013XLA The frame count for an XC4013XLA part type
static int	FRAME_COUNT_40150XV The frame count for an XC40150XV part type
static int	FRAME_COUNT_40200XV The frame count for an XC40200XV part type
static int	FRAME_COUNT_4020E The frame count for an XC4020E part type
static int	FRAME_COUNT_4020EX The frame count for an XC4020EX/XL part type
static int	FRAME_COUNT_4020XLA The frame count for an XC4020XLA part type
static int	FRAME_COUNT_4025 The frame count for an XC4025 part type
static int	FRAME_COUNT_40250XV The frame count for an XC40250XV part type
static int	FRAME_COUNT_4025E The frame count for an XC4025E part type
static int	FRAME_COUNT_4028EX The frame count for an XC4028EX/XL part type
static int	FRAME_COUNT_4028XLA The frame count for an XC4028XLA part type
static int	FRAME_COUNT_4036EX The frame count for an XC4036EX/XL part type
static int	FRAME_COUNT_4036XLA The frame count for an XC4036XLA part type
static int	FRAME_COUNT_4044EX The frame count for an XC4044EX/XL part type
static int	FRAME_COUNT_4044XLA The frame count for an XC4044XLA part type
static int	FRAME_COUNT_4052EX The frame count for an XC4052EX/XL part type
static int	FRAME_COUNT_4052XLA The frame count for an XC4052XLA part type
static int	FRAME_COUNT_4062EX The frame count for an XC4062EX/XL part type
static int	FRAME_COUNT_4062XLA The frame count for an XC4062XLA part type
static int	FRAME_COUNT_4085EX The frame count for an XC4085EX/XL part type
static int	FRAME_COUNT_4085XLA The frame count for an XC4085XLA part type
static int	FRAME_COUNT_UNKNOWN The frame count for an unknown XC4K part type
static int	FRAME_SIZE_4006E The frame size for an XC4006E part type
static int	FRAME_SIZE_4010EX The frame size for an XC4010EX/XL part type
static int	FRAME_SIZE_40110XV The frame size for an XC40110XV part type
static int	FRAME_SIZE_4013E The frame size for an XC4013E part type
static int	FRAME_SIZE_4013EX The frame size for an XC4013EX/XL part type
static int	FRAME_SIZE_4013XLA The frame size for an XC4013XLA part type
static int	FRAME_SIZE_40150XV The frame size for an XC40150XV part type
static int	FRAME_SIZE_40200XV The frame size for an XC40200XV part type
static int	FRAME_SIZE_4020E The frame size for an XC4020E part type
static int	FRAME_SIZE_4020EX The frame size for an XC4020EX/XL part type
static int	FRAME_SIZE_4020XLA The frame size for an XC4020XLA part type
static int	FRAME_SIZE_4025 The frame size for an XC4025 part type
static int	FRAME_SIZE_40250XV The frame size for an XC40250XV part type
static int	FRAME_SIZE_4025E The frame size for an XC4025E part type
static int	FRAME_SIZE_4028EX The frame size for an XC4028EX/XL part type
static int	FRAME_SIZE_4028XLA The frame size for an XC4028XLA part type
static int	FRAME_SIZE_4036EX The frame size for an XC4036EX/XL part type
static int	FRAME_SIZE_4036XLA The frame size for an XC4036XLA part type
static int	FRAME_SIZE_4044EX The frame size for an XC4044EX/XL part type
static int	FRAME_SIZE_4044XLA The frame size for an XC4044XLA part type
static int	FRAME_SIZE_4052EX The frame size for an XC4052EX/XL part type
static int	FRAME_SIZE_4052XLA The frame size for an XC4052XLA part type
static int	FRAME_SIZE_4062EX The frame size for an XC4062EX/XL part type
static int	FRAME_SIZE_4062XLA The frame size for an XC4062XLA part type
static int	FRAME_SIZE_4085EX The frame size for an XC4085EX/XL part type
static int	FRAME_SIZE_4085XLA The frame size for an XC4085XLA part type
static int	FRAME_SIZE_UNKNOWN The frame size for an unknown XC4K part type
static int	FRAME_START_BITS The number of start bits per frame.
static int	FRAME_STOP_BITS The number of stop bits per frame.
static int	RB_POSTAMBLE_SIZE The size of one start bit and 11 CRC bits
static int	XILINX_4006E Defines the encoding for an XC4006E part type
static int	XILINX_4010EX Defines the encoding for an XC4010EX/XL part type
static int	XILINX_40110XV Defines the encoding for an XC40110XV part type
static int	XILINX_4013E Defines the encoding for an XC4013E part type
static int	XILINX_4013EX Defines the encoding for an XC4013EX/XL part type
static int	XILINX_4013XLA Defines the encoding for an XC4013XLA part type
static int	XILINX_40150XV Defines the encoding for an XC40150XV part type
static int	XILINX_40200XV Defines the encoding for an XC40200XV part type
static int	XILINX_4020E Defines the encoding for an XC4020E part type
static int	XILINX_4020EX Defines the encoding for an XC4020EX/XL part type
static int	XILINX_4020XLA Defines the encoding for an XC4020XLA part type
static int	XILINX_4025 Defines the encoding for an XC4025 part type
static int	XILINX_40250XV Defines the encoding for an XC40250XV part type
static int	XILINX_4025E Defines the encoding for an XC4025E part type
static int	XILINX_4028EX Defines the encoding for an XC4028EX/XL part type
static int	XILINX_4028XLA Defines the encoding for an XC4028XLA part type
static int	XILINX_4036EX Defines the encoding for an XC4036EX/XL part type
static int	XILINX_4036XLA Defines the encoding for an XC4036XLA part type
static int	XILINX_4044EX Defines the encoding for an XC4044EX/XL part type
static int	XILINX_4044XLA Defines the encoding for an XC4044XLA part type
static int	XILINX_4052EX Defines the encoding for an XC4052EX/XL part type
static int	XILINX_4052XLA Defines the encoding for an XC4052XLA part type
static int	XILINX_4062EX Defines the encoding for an XC4062EX/XL part type
static int	XILINX_4062XLA Defines the encoding for an XC4062XLA part type
static int	XILINX_4085EX Defines the encoding for an XC4085EX/XL part type
static int	XILINX_4085XLA Defines the encoding for an XC4085XLA part type
static int	XILINX_UNKNOWN Defines the encoding for an unknown XC4K part type

Constructor Summary

XC4KBitstreamParams()
Constructs an object, setting the value of the PE type to XILINX_UNKNOWN, the header length in bits to 5 (the standard readback bitstream header length for XC4000), and the byte ordering to byteMirrored false (in other words, bit 0 is the MSB of the byte).

XC4KBitstreamParams(java.lang.String peTypeStr, int newHeaderBits, boolean newByteMirrored)
Constructs an object setting the value of the PE type, the header length, byte ordering according to the parameters given.

Method Summary

int	calculateRBOffset(int llOffset) Calculates the absolute offset of a readback state bit based on the offset provided by the Xilinx Logical Allocation file (.ll) created by "bitgen".
int	getBitstreamLength() Returns the bitstream length in terms of bits based on the declared PE type and header length in bits.
int	getBytestreamLength() Returns the bitstream length in terms of bytes based on the declared PE type and header lengths in bits.
int	getFrameCount() Maps a PE type to a bitstream frame count based on the encodings for the part type defined in the constants above.
int	getFrameSize() Maps a PE type to a frame size based on the encodings for the part type defined in the constants above.
int	getHeaderBits() Returns the current length of the header, in bits.
int	getPEType() Returns the integer value representing the part type of the PE.
boolean	isByteMirrored() Returns the values of the byteMirrored property, discussed above.
void	setByteMirrored(boolean isByteMirrored) Sets the byteMirrored field to the value of the parameter.
void	setHeaderBits(int newHeaderBits) Sets the length of the header (in bits) to the parameter of the method.
void	setPEType(int newPeType) Sets the value of the PE type using the static final int "constants" defined earlier.
java.lang.String	toString() Returns a String reflecting the Xilinx part type of the PE.
static java.lang.String	validPartTypes() Returns a String reflecting the Xilinx part type of the PE.
static int	whichPEType(java.lang.String peTypeStr) Returns an int reflecting the Xilinx part type of the PE.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

XILINX_UNKNOWN

public static final int XILINX_UNKNOWN

Defines the encoding for an unknown XC4K part type

See Also:

Constant Field Values

XILINX_4025

public static final int XILINX_4025

Defines the encoding for an XC4025 part type

See Also:

Constant Field Values

XILINX_4025E

public static final int XILINX_4025E

Defines the encoding for an XC4025E part type

See Also:

Constant Field Values

XILINX_4020E

public static final int XILINX_4020E

Defines the encoding for an XC4020E part type

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Constant Field Values

XILINX_4013E

public static final int XILINX_4013E

Defines the encoding for an XC4013E part type

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Constant Field Values

XILINX_4006E

public static final int XILINX_4006E

Defines the encoding for an XC4006E part type

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Constant Field Values

XILINX_4028EX

public static final int XILINX_4028EX

Defines the encoding for an XC4028EX/XL part type

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Constant Field Values

XILINX_4036EX

public static final int XILINX_4036EX

Defines the encoding for an XC4036EX/XL part type

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Constant Field Values

XILINX_4044EX

public static final int XILINX_4044EX

Defines the encoding for an XC4044EX/XL part type

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Constant Field Values

XILINX_4052EX

public static final int XILINX_4052EX

Defines the encoding for an XC4052EX/XL part type

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Constant Field Values

XILINX_4062EX

public static final int XILINX_4062EX

Defines the encoding for an XC4062EX/XL part type

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Constant Field Values

XILINX_4010EX

public static final int XILINX_4010EX

Defines the encoding for an XC4010EX/XL part type

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Constant Field Values

XILINX_4085EX

public static final int XILINX_4085EX

Defines the encoding for an XC4085EX/XL part type

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Constant Field Values

XILINX_4013EX

public static final int XILINX_4013EX

Defines the encoding for an XC4013EX/XL part type

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Constant Field Values

XILINX_4020EX

public static final int XILINX_4020EX

Defines the encoding for an XC4020EX/XL part type

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Constant Field Values

XILINX_4013XLA

public static final int XILINX_4013XLA

Defines the encoding for an XC4013XLA part type

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Constant Field Values

XILINX_4020XLA

public static final int XILINX_4020XLA

Defines the encoding for an XC4020XLA part type

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Constant Field Values

XILINX_4028XLA

public static final int XILINX_4028XLA

Defines the encoding for an XC4028XLA part type

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Constant Field Values

XILINX_4036XLA

public static final int XILINX_4036XLA

Defines the encoding for an XC4036XLA part type

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Constant Field Values

XILINX_4044XLA

public static final int XILINX_4044XLA

Defines the encoding for an XC4044XLA part type

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Constant Field Values

XILINX_4052XLA

public static final int XILINX_4052XLA

Defines the encoding for an XC4052XLA part type

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Constant Field Values

XILINX_4062XLA

public static final int XILINX_4062XLA

Defines the encoding for an XC4062XLA part type

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Constant Field Values

XILINX_4085XLA

public static final int XILINX_4085XLA

Defines the encoding for an XC4085XLA part type

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Constant Field Values

XILINX_40110XV

public static final int XILINX_40110XV

Defines the encoding for an XC40110XV part type

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Constant Field Values

XILINX_40150XV

public static final int XILINX_40150XV

Defines the encoding for an XC40150XV part type

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Constant Field Values

XILINX_40200XV

public static final int XILINX_40200XV

Defines the encoding for an XC40200XV part type

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Constant Field Values

XILINX_40250XV

public static final int XILINX_40250XV

Defines the encoding for an XC40250XV part type

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Constant Field Values

FRAME_SIZE_UNKNOWN

public static final int FRAME_SIZE_UNKNOWN

The frame size for an unknown XC4K part type

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Constant Field Values

FRAME_SIZE_4025

public static final int FRAME_SIZE_4025

The frame size for an XC4025 part type

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Constant Field Values

FRAME_SIZE_4006E

public static final int FRAME_SIZE_4006E

The frame size for an XC4006E part type

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Constant Field Values

FRAME_SIZE_4013E

public static final int FRAME_SIZE_4013E

The frame size for an XC4013E part type

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Constant Field Values

FRAME_SIZE_4020E

public static final int FRAME_SIZE_4020E

The frame size for an XC4020E part type

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Constant Field Values

FRAME_SIZE_4025E

public static final int FRAME_SIZE_4025E

The frame size for an XC4025E part type

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Constant Field Values

FRAME_SIZE_4010EX

public static final int FRAME_SIZE_4010EX

The frame size for an XC4010EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4013EX

public static final int FRAME_SIZE_4013EX

The frame size for an XC4013EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4020EX

public static final int FRAME_SIZE_4020EX

The frame size for an XC4020EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4028EX

public static final int FRAME_SIZE_4028EX

The frame size for an XC4028EX/XL part type

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Constant Field Values

FRAME_SIZE_4036EX

public static final int FRAME_SIZE_4036EX

The frame size for an XC4036EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4044EX

public static final int FRAME_SIZE_4044EX

The frame size for an XC4044EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4052EX

public static final int FRAME_SIZE_4052EX

The frame size for an XC4052EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4062EX

public static final int FRAME_SIZE_4062EX

The frame size for an XC4062EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4085EX

public static final int FRAME_SIZE_4085EX

The frame size for an XC4085EX/XL part type

See Also:

Constant Field Values

FRAME_SIZE_4013XLA

public static final int FRAME_SIZE_4013XLA

The frame size for an XC4013XLA part type

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Constant Field Values

FRAME_SIZE_4020XLA

public static final int FRAME_SIZE_4020XLA

The frame size for an XC4020XLA part type

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Constant Field Values

FRAME_SIZE_4028XLA

public static final int FRAME_SIZE_4028XLA

The frame size for an XC4028XLA part type

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Constant Field Values

FRAME_SIZE_4036XLA

public static final int FRAME_SIZE_4036XLA

The frame size for an XC4036XLA part type

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Constant Field Values

FRAME_SIZE_4044XLA

public static final int FRAME_SIZE_4044XLA

The frame size for an XC4044XLA part type

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Constant Field Values

FRAME_SIZE_4052XLA

public static final int FRAME_SIZE_4052XLA

The frame size for an XC4052XLA part type

See Also:

Constant Field Values

FRAME_SIZE_4062XLA

public static final int FRAME_SIZE_4062XLA

The frame size for an XC4062XLA part type

See Also:

Constant Field Values

FRAME_SIZE_4085XLA

public static final int FRAME_SIZE_4085XLA

The frame size for an XC4085XLA part type

See Also:

Constant Field Values

FRAME_SIZE_40110XV

public static final int FRAME_SIZE_40110XV

The frame size for an XC40110XV part type

See Also:

Constant Field Values

FRAME_SIZE_40150XV

public static final int FRAME_SIZE_40150XV

The frame size for an XC40150XV part type

See Also:

Constant Field Values

FRAME_SIZE_40200XV

public static final int FRAME_SIZE_40200XV

The frame size for an XC40200XV part type

See Also:

Constant Field Values

FRAME_SIZE_40250XV

public static final int FRAME_SIZE_40250XV

The frame size for an XC40250XV part type

See Also:

Constant Field Values

FRAME_COUNT_UNKNOWN

public static final int FRAME_COUNT_UNKNOWN

The frame count for an unknown XC4K part type

See Also:

Constant Field Values

FRAME_COUNT_4025

public static final int FRAME_COUNT_4025

The frame count for an XC4025 part type

See Also:

Constant Field Values

FRAME_COUNT_4006E

public static final int FRAME_COUNT_4006E

The frame count for an XC4006E part type

See Also:

Constant Field Values

FRAME_COUNT_4013E

public static final int FRAME_COUNT_4013E

The frame count for an XC4013E part type

See Also:

Constant Field Values

FRAME_COUNT_4020E

public static final int FRAME_COUNT_4020E

The frame count for an XC4020E part type

See Also:

Constant Field Values

FRAME_COUNT_4025E

public static final int FRAME_COUNT_4025E

The frame count for an XC4025E part type

See Also:

Constant Field Values

FRAME_COUNT_4010EX

public static final int FRAME_COUNT_4010EX

The frame count for an XC4010EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4013EX

public static final int FRAME_COUNT_4013EX

The frame count for an XC4013EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4020EX

public static final int FRAME_COUNT_4020EX

The frame count for an XC4020EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4028EX

public static final int FRAME_COUNT_4028EX

The frame count for an XC4028EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4036EX

public static final int FRAME_COUNT_4036EX

The frame count for an XC4036EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4044EX

public static final int FRAME_COUNT_4044EX

The frame count for an XC4044EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4052EX

public static final int FRAME_COUNT_4052EX

The frame count for an XC4052EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4062EX

public static final int FRAME_COUNT_4062EX

The frame count for an XC4062EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4085EX

public static final int FRAME_COUNT_4085EX

The frame count for an XC4085EX/XL part type

See Also:

Constant Field Values

FRAME_COUNT_4013XLA

public static final int FRAME_COUNT_4013XLA

The frame count for an XC4013XLA part type

See Also:

Constant Field Values

FRAME_COUNT_4020XLA

public static final int FRAME_COUNT_4020XLA

The frame count for an XC4020XLA part type

See Also:

Constant Field Values

FRAME_COUNT_4028XLA

public static final int FRAME_COUNT_4028XLA

The frame count for an XC4028XLA part type

See Also:

Constant Field Values

FRAME_COUNT_4036XLA

public static final int FRAME_COUNT_4036XLA

The frame count for an XC4036XLA part type

See Also:

Constant Field Values

FRAME_COUNT_4044XLA

public static final int FRAME_COUNT_4044XLA

The frame count for an XC4044XLA part type

See Also:

Constant Field Values

FRAME_COUNT_4052XLA

public static final int FRAME_COUNT_4052XLA

The frame count for an XC4052XLA part type

See Also:

Constant Field Values

FRAME_COUNT_4062XLA

public static final int FRAME_COUNT_4062XLA

The frame count for an XC4062XLA part type

See Also:

Constant Field Values

FRAME_COUNT_4085XLA

public static final int FRAME_COUNT_4085XLA

The frame count for an XC4085XLA part type

See Also:

Constant Field Values

FRAME_COUNT_40110XV

public static final int FRAME_COUNT_40110XV

The frame count for an XC40110XV part type

See Also:

Constant Field Values

FRAME_COUNT_40150XV

public static final int FRAME_COUNT_40150XV

The frame count for an XC40150XV part type

See Also:

Constant Field Values

FRAME_COUNT_40200XV

public static final int FRAME_COUNT_40200XV

The frame count for an XC40200XV part type

See Also:

Constant Field Values

FRAME_COUNT_40250XV

public static final int FRAME_COUNT_40250XV

The frame count for an XC40250XV part type

See Also:

Constant Field Values

RB_POSTAMBLE_SIZE

public static final int RB_POSTAMBLE_SIZE

The size of one start bit and 11 CRC bits

See Also:

Constant Field Values

BYTE_SIZE

public static final int BYTE_SIZE

The length of a byte in bits.

See Also:

Constant Field Values

FRAME_START_BITS

public static final int FRAME_START_BITS

The number of start bits per frame.

See Also:

Constant Field Values

FRAME_STOP_BITS

public static final int FRAME_STOP_BITS

The number of stop bits per frame.

See Also:

Constant Field Values

Constructor Detail

XC4KBitstreamParams

public XC4KBitstreamParams()

Constructs an object, setting the value of the PE type to XILINX_UNKNOWN, the header length in bits to 5 (the standard readback bitstream header length for XC4000), and the byte ordering to byteMirrored false (in other words, bit 0 is the MSB of the byte).

XC4KBitstreamParams

public XC4KBitstreamParams(java.lang.String peTypeStr,
                           int newHeaderBits,
                           boolean newByteMirrored)

Constructs an object setting the value of the PE type, the header length, byte ordering according to the parameters given.

Parameters:

peTypeStr - The String representing the type of the XC4000 part. The String has the form of "40xxxx(E/EX/XLA/XV)" or "XC40xxxx(E/EX/XLA/XV)".

newHeaderBits - The length of the header (all bits up to but not including the first frame's start bit).

newByteMirrored - true if the LSB of a byte is addressed as bit 0, false if the MSB of a byte is addressed as bit 0.

Method Detail

setByteMirrored

public void setByteMirrored(boolean isByteMirrored)

Sets the byteMirrored field to the value of the parameter. As mentioned above, a byte array of the readback bitstream is considered byte mirrored (byteMirrored = true) if the LSB of the byte is bit 0 and the MSB is bit 7 when addressing bits in a byte. Otherwise, the bytes are not byte mirrored (byteMirrored = false), meaning bit 0 of the bytes is the MSB and bit 7 is the LSB.

Parameters:

isByteMirrored - The byteMirrored property is set to this parameter value.

isByteMirrored

public boolean isByteMirrored()

Returns the values of the byteMirrored property, discussed above.

Returns:

The value of the byteMirrored property.

setPEType

public void setPEType(int newPeType)

Sets the value of the PE type using the static final int "constants" defined earlier.

Parameters:

newPeType - The integer parameter having a value of XILINX_????? from the constants provided above.

getPEType

public int getPEType()

Returns the integer value representing the part type of the PE.

Returns:

The integer value representing the Xilinx part type of the PE.

getBitstreamLength

public int getBitstreamLength()

Returns the bitstream length in terms of bits based on the declared PE type and header length in bits.

Returns:

The length of the bitstream in bits.

getBytestreamLength

public int getBytestreamLength()

Returns the bitstream length in terms of bytes based on the declared PE type and header lengths in bits.

Returns:

The length of the bitstream in bytes, rounded up to the next byte if the length does not end exactly on a byte boundary.

setHeaderBits

public void setHeaderBits(int newHeaderBits)

Sets the length of the header (in bits) to the parameter of the method.

Parameters:

newHeaderBits - The new length of the header in bits.

getHeaderBits

public int getHeaderBits()

Returns the current length of the header, in bits.

Returns:

The length of the header in bits.

getFrameSize

public int getFrameSize()

Maps a PE type to a frame size based on the encodings for the part type defined in the constants above.

Returns:

The frame size (or length) in bits for the given part type.

getFrameCount

public int getFrameCount()

Maps a PE type to a bitstream frame count based on the encodings for the part type defined in the constants above.

Returns:

The number of frames for the given part type.

toString

public java.lang.String toString()

Returns a String reflecting the Xilinx part type of the PE.

Returns:

A String representing the part type based on the part type encodings given above.

whichPEType

public static int whichPEType(java.lang.String peTypeStr)

Returns an int reflecting the Xilinx part type of the PE.

Parameters:

peTypeStr - The name of the part as a String.

Returns:

An int representing the part type based on the part type encodings given above.

calculateRBOffset

public int calculateRBOffset(int llOffset)

Calculates the absolute offset of a readback state bit based on the offset provided by the Xilinx Logical Allocation file (.ll) created by "bitgen".

Parameters:

llOffset - An integer offset for a state bit in the readback bitstream.

Returns:

The absolute offset of the state bit, taking into account the extra bits accompanying each frame.

validPartTypes

public static java.lang.String validPartTypes()

Returns a String reflecting the Xilinx part type of the PE.

Returns:

A String representing the part type based on the part type encodings given above.