SCSI mode pages
SCSI target devices provide a number of SCSI mode pages. These can be interrogated by a Mode Sense command and set by a Mode Select command. The Mode Sense and Mode Select commands include a 6-bit address field, allowing for 64 possible mode pages. There is a standard map of those page codes below. Note that any given SCSI device type will only support a subset of these page codes.
- 00h - vendor specific
- 01h - read-write error recovery parameters
- 02h - disconnect-reconnect - allows the initiator to tune SCSI bus performance
- 03h - format parameters (direct-access devices)
- 03h - measurement units (scanner devices)
- 04h - rigid disk geometry parameters
- 05h - flexible disk parameters
- 06h - optical memory parameters
- 07h - verify error recovery parameters
- 08h - caching
- 09h - peripheral device - transfers vendor-specific data between an initiator and a peripheral interface below the target
- 0Ah - control mode - tagged queuing, extended contingent allegiance, asynchronous event notification, and error logging
- 0Bh - medium types supported
- 0Ch - notch and partition parameters
- 0Dh - CDROM parameters
- 0Eh - CDROM audio control (playback) parameters
- 0Fh - reserved for other device types ?
- 10h - device configuration
- 11h - medium partitions (1)
- 12h - medium partitions (2)
- 13h - medium partitions (3)
- 14h - medium partitions (4)
- 15h-1Ch - reserved for other device types ?
- 1Dh - medium-changer element address assignment
- 1Eh - medium-changer transport geometry parameters
- 1Fh - medium-changer device capabilities
- 20h-29h - vendor specific
- 2Ah - CD-ROM capabilities page
- 2Bh-3Eh - vendor specific
- 3Fh - return all mode pages (valid only for a Mode Sense command)