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Merge pull request #38 from eclipse-threadx/bo-ms/add_revision_history
Add revision history file.
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‎docs/revision_history.txt‎

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LevelX
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For version 6 and higher, please refer to the release notes on GitHub at https://github.com/eclipse-threadx/levelx/releases.
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Below is the revision history for 5.x.
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08/15/2019 LevelX generic code version 5.6. This release includes the
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following major features:
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Files are modified to fix compiler warnings:
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demo_filex_nand_flash.c
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demo_filex_nor_flash.c
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lx_nand_flash_256byte_ecc_check.c
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lx_nand_flash_256byte_ecc_compute.c
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10/10/2018 LevelX generic code version 5.5. This release includes the following
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modifications:
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lx_api.h Removed compiler warnings, added extended NOR cache
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support, new APIs, and new constants.
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lx_nand_flash_256byte_ecc_check.c Removed compiler warnings.
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lx_nand_flash_256byte_ecc_compute.c Removed compiler warnings.
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lx_nand_flash_block_obsoleted_check.c Added logic to mark the beginning of block erase.
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lx_nand_flash_block_reclaim.c Removed compiler warnings, and added logic to mark
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the beginning of block erase.
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lx_nand_flash_logical_sector_find.c Removed compiler warnings, and added logic to use
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and maintain the last found page.
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lx_nand_flash_next_block_to_erase_find.c Removed compiler warnings.
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lx_nand_flash_open.c Added logic to detect start of a block erase that
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was interrupted, removed system error call for more
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than one page being obsoleted since this can happen
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normally, removed compiler warnings, and added logic
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to initialize the last found page.
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lx_nand_flash_partial_defragment.c Added file in this release.
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lx_nand_flash_sector_release.c Removed compiler warnings.
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lx_nand_flash_sector_write.c Removed compiler warnings.
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lx_nor_flash_block_reclaim.c Removed direct driver access for erases/reads/writes,
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removed compiler warnings, and added logic to mark
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the beginning of block erase.
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lx_nor_flash_driver_block_erase.c Added file in this release.
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lx_nor_flash_driver_read.c Added file in this release.
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lx_nor_flash_driver_write.c Added file in this release.
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lx_nor_flash_extended_cache_enable.c Added file in this release.
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lx_nor_flash_logical_sector_find.c Removed direct driver access for reads, removed compiler
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warnings, and added logic to use and maintain the last
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found sector/block.
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lx_nor_flash_next_block_to_erase_find.c Removed compiler warnings, and removed direct driver
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access for reads.
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lx_nor_flash_open.c Removed direct driver access for erases/reads/writes,
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added logic to detect start of a block erase that was
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interrupted, removed system error call for more than
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one page being obsoleted since this can happen normally,
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removed compiler warnings, and added logic to initialize
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the last found sector/block.
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lx_nor_flash_partial_defragment.c Added file in this release.
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lx_nor_flash_physical_sector_allocate.c Removed direct driver access for reads/writes.
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lx_nor_flash_sector_read.c Removed direct driver access for reads/writes.
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lx_nor_flash_sector_release.c Removed direct driver access for reads/writes.
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lx_nor_flash_sector_write.c Removed direct driver access for reads/writes.
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lx_nor_flash_simulator.c Removed compiler warnings.
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lx*.c Changed comments and copyright header, and added
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conditional around disabling ThreadX error checking.
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lx*.h Changed comments and copyright header.
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05/01/2018 LevelX generic code version 5.4. This release includes the following
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modifications:
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lx_api.h Added NOR flash RAM buffer, added bit constant
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for both NOR and NAND flash to indicate when
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mapping write is valid, added diagnostic counter
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for tracking when incomplete mapping is detected
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on open, add added new error code when driver
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does not supply a sector/page RAM buffer.
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fx_nand_flash_simulated_driver.c Added error checking, and corrected sector
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read/write processing.
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fx_nor_flash_simulator_driver.c Added error checking.
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lx_nand_flash_block_reclaim.c Added clearing of additional bit to indicate when
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mapping is valid, and corrected logic that could
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cause a newly mapped sector to be erased.
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lx_nand_flash_logical_sector_find.c Added logic to make sure the sector mapping is valid.
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lx_nand_flash_next_block_to_erase_find.c Added logic to improve search for free sectors.
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lx_nand_flash_open.c Added logic to detect and handle a mapping entry
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interrupted before completion, and added logic to
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ensure there is a page buffer supplied by the
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driver.
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lx_nand_flash_sector_release.c Added reclaim logic to help increase free sectors.
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lx_nand_flash_sector_write.c Added clearing of additional bit to indicate when
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mapping is valid.
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lx_nor_flash_block_reclaim.c Added clearing of additional bit to indicate when
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mapping is valid, added logic to read NOR sector
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into RAM buffer if direct NOR access is not possible,
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and corrected logic that could cause a newly mapped
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sector to be erased.
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lx_nor_flash_logical_sector_find.c Added logic to make sure the sector mapping is valid.
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lx_nor_flash_next_block_to_erase_find.c Added logic to improve search for free sectors.
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lx_nor_flash_open.c Added logic to detect and handle a mapping entry
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interrupted before completion, and added logic to
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ensure there is a sector buffer supplied by the
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driver if LX_DIRECT_READ is not specified.
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lx_nor_flash_sector_release.c Added reclaim logic to help increase free sectors.
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lx_nor_flash_sector_write.c Added clearing of additional bit to indicate when
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mapping is valid, and removed optimization to ensure
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atomic sector write.
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lx_nor_flash_simulator.c Added logic to supply RAM buffer for reading
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sector when LX_DIRECT_READ is not specified,
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and removed write attempt to already written
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sector, since this is no longer required.
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fx*.c Changed comments and copyright header.
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lx*.c Changed comments and copyright header.
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lx*.h Changed comments and copyright header.
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11/01/2017 LevelX generic code version 5.3. This release includes the following
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modifications:
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lx_nand_flash_block_full_update.c Added check to make sure the block is
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actually full.
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lx_nand_flash_block_reclaim.c Added support for direct logical sector
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cache.
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lx_nand_flash_logical_sector_find.c Added adjustment of mapped sectors when
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examining the mapped list, added support
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for direct logical sector cache.
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lx_nand_flash_open.c Added support for direct logical sector cache,
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and updated diagnostics.
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lx_nand_flash_physical_page_allocate.c Added adjustment of the search pointer for
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next allocate request.
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lx_nand_flash_sector_mapping_cache_invalidate.c Added support for direct logical sector cache.
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lx_nand_flash_sector_release.c Added logic to update the page 0 mapping list
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if present.
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lx_nand_flash_sector_write.c Added logic to update the page 0 mapping list
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if present, and added check to make sure the
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new mapping wasn't moved, added direct logical
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sector cache.
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fx*.c Changed comments and copyright header.
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lx*.c Changed comments and copyright header.
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lx*.h Changed comments and copyright header.
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03/01/2017 LevelX generic code version 5.2. This release includes the following
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modifications:
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lx_nand_flash_block_full_update.c Reduced the number of words accessed in
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page 0, added driver interface layer,
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and modified the extra bytes usage in
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page 0 to support block valid-full-empty.
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lx_nand_flash_block_obsoleted_check.c Added file in this release.
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lx_nand_flash_block_reclaim.c Added logic to update page 0 on a full
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block update, added driver interface layer,
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and added additional diagnostic information.
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lx_nand_flash_driver_block_erase.c Added file in this release.
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lx_nand_flash_driver_block_erased_verify.c Added file in this release.
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lx_nand_flash_driver_block_status_get.c Added file in this release.
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lx_nand_flash_driver_block_status_set.c Added file in this release.
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lx_nand_flash_driver_extra_bytes_get.c Added file in this release.
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lx_nand_flash_driver_extra_bytes_set.c Added file in this release.
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lx_nand_flash_driver_page_erased_verify.c Added file in this release.
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lx_nand_flash_driver_read.c Added file in this release.
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lx_nand_flash_driver_write.c Added file in this release.
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lx_nand_flash_extended_cache_enable.c Added file in this release.
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lx_nand_flash_logical_sector_find.c Reduced the number of words accessed in
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page 0, corrected check for valid sector
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mapping list, added max mapped sector logic,
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added driver interface layer, and added logic
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to use and maintain the last found sector block.
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lx_nand_flash_next_block_to_erase_find.c Reduced the number of words accessed in page 0,
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and added driver interface layer.
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lx_nand_flash_open.c Reduced the number of words accessed in page 0,
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added driver interface layer, added additional
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diagnostic information, added logic to initialize
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the maximum mapped logical sector, and added
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initialization of the last found sector block.
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lx_nand_flash_physical_page_allocate.c Reduced the number of words accessed in page 0,
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added driver interface layer, and added logic
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to use page 0's extra bytes to determine if
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block has available pages.
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lx_nand_flash_sector_read.c Added driver interface layer.
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lx_nand_flash_sector_release.c Added logic to maintain the maximum mapped
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sector, and added driver interface layer.
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lx_nand_flash_sector_write.c Added call to see if the block is completely
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obsoleted, added logic to remember the maximum
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mapped sector, and added driver interface layer.
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fx_nand_flash_simulator_driver.c Removed sector packing by requiring sector and
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cluster size to match, and added release sector
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support.
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fx*.c Changed comments and copyright header.
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lx*.c Changed comments and copyright header.
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lx*.h Changed comments and copyright header.
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08/01/2016 LevelX generic code version 5.1. This release includes the following
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modifications:
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lx_nor_flash_physical_sector_allocate.c Corrected problem with more than 32 sectors per
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flash block.
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fx*.c Changed comments and copyright header.
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lx*.c Changed comments and copyright header.
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lx*.h Changed comments and copyright header.
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01/22/2015 Initial LevelX generic code version 5.0.

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