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This file patches Let2BlkDevType to provide drive letters for floppy drives. The original function is to be commented out and this file included in its place.
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This file adds a case to BlkDevInit for the floppy BDT, allowing it to be initialized. It is to be placed after the last case in the function's switch statement.
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The Bt call was modified to test for the corrrect bit of SRA.
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FDCWriteBlks now checks if the disk is write-protected before attempting a write, throwing an exception if it is. I also reworked the retry check for both it and FDCReadBlks.
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I realized that the logic that determined the sector size value sent to the controller would not work properly on larger sector size, so I redid it.
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The BlkDevAdd code now checks if the floppy disk has a valid RedSea boot sector before attempting to initialize it.
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BlkDevAdd should set drv_offset to 0 (since the BlkDev's drv_offset will also be zero; floppies don't have a partition table), so I removed the forced-set to 0 in the code.
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I have added a function that will check for the presence of valid sector data on either side of a floppy disk. This function is used to check for the presence of a disk in a way that does not rely on the proper handling of the disk change flag.
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This file adds code for handling floppy block devices to the BlkDevAdd function. It is to be included at the end of the function's switch statement.
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This file replaces the DefineLstLoad call that sets ST_BLKDEV_TYPES to add the FDC type. The original code is to be commented out and this file included after it.
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This file replaces the block device type list in KernelA.HH. The original code is to be commented out and this file included after it.
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I halved the size of the DMA buffer in keeping with the "one track at a time" methodology I have adopted.
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This file contains new headers for the BlkDev-ified driver.
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I added the data rate values accepted by the FDC to the main header file.
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I moved the version check into the drive-0-only code; it wouldn't make sense to check the version each time a drive gets initialized.
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I have decided not to use multi-track mode and instead do atomic reads and writes to sector ranges. I have also added a timeout to the motor command when the motor is turned on (approximately 500 milliseconds to accomodate 5ΒΌ" drives). FDCInit now sets the highest-accessible block.
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DMA will always be used, so I have removed the DMA flag from CBlkDev.
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This is the initial commit for the BlkDev-ified driver. It is not at all
in a working state at this point, and the old files have been left for
reference purposes.
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I fixed the read and write functions so that they correctly check the
status of the controller before performing the write (hopefully).
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I have moved some source files into subdirectories for ease of
installation. I have also added an installer script to automatically
place driver files into their respective system directories.
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