OS2AHCI.ADD

The OS/2 AHCI adapter device driver supports both ATA and ATAPI devices in a single driver. An ATAPI/CD-ROM filter driver is only required if you want to read/write CD-DA (audio) format CDs.

AHCI or SATA compatibility mode has to be activated in BIOS options.

Version

 * 1 - Created by Christian Müller, Markus Thielen. Open Source under the GNU GPL license
 * 1.22
 * 1.28 (2013-06-01)
 * 1.32 (2013-11-09)
 * 2.07 (2019-03-27)

Syntax
BASEDEV=OS2AHCI.ADD

Parameters

 * /a - Set adapter for adapter-specific options(default = -1, all adapters)
 * /b: - Initialize the COM port to the specified baud rate
 * /c: - Set debug COM port base address in hex (default = 3f8); if used, this option should come before any /d options.
 * /d - Debug output on COM port; multiple "/d" options will increase verbosity:
 * 1 = requests
 * 2 = detailed
 * 3 = verbose, including MMIO operations
 * /g: : - Add generic PCI ID to list of supported AHCI adapters (e.g. /g:8086:2829)
 * /p - Set port for port-specific options(default = -1, all ports)
 * /r - Reset ports during initialization (default = off unless the [Intel] AHCI controller was found to be initialized by the BIOS to SATA mode)
 * /t - Perform thorough PCI ID scan; default = on, can be turned off with /!t to perform only a PCI class scan
 * /w - Allows the trace buffer to wrap when full.


 * Port-specific Options
 * /s Enable SCSI emulation for ATAPI units (default = on) SCSI emulation is required for tools like cdrecord.
 * /n Enable NCQ (Native Command Queuing) for hard disks (default = off)
 * /ls Set link speed (default = 0):
 * 0 = maximum,
 * 1 = limit to generation 1
 * 2 = limit to generation 2
 * 3 = limit to generation 3
 * /lp - Set link power management (default = 0):
 * 0 = full power management,
 * 1 = transitions to "partial slumber state" disabled,
 * 2 = transitions to "slumber state" disabled,
 * 3 = transitions to both partial and slumber states disabled
 * /4 - Force track size to be 56 sectors regardless of the reported disk geometry to optimize partition boundaries for hard disks with 4096 byte sectors.

Links

 * https://trac.netlabs.org/ahci