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ATA TRIM (Developers)

posted by RayeR(R) Homepage, CZ, 11.08.2017, 15:45

I discovered in ACS-4 spec, that DATA SET MANAGEMENT requires LBA48 parameters. So I further implemented LBA48 addressing scheme to feed IDE controller registers. Then I checked that it works using READ SECTOR(S) EXT command and I can read sectores beyond 128GB limit with it. Unfortunately it still fails with TRIM command but in different way - now I got the device busy timeout after writting the command code 06h even before I can start transfer sector data with the range list. The drive remains in busy state until I reset the controller via reset bit in I/O port 3F6h.

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DOS gives me freedom to unlimited HW access.

 

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