Sometimes we may need to force a device to operate in a specific mode. For example, a fast SCSI may be set to work as a “normal” SCSI—although we need to remember that the device must support the capability that we are trying to enable or disable. For example, we cannot enable fast SCSI on a “normal” SCSI device.
A number of different SCSI options are available and are shown in Table 17.7. These can be set to affect the device functions:
|0x1||Debug (target driver)|
|0x4||Debug (host adaptor)|
|0x20||Synchronous transfer capability|
|0x80||Tagged command support|
|0x100||Fast SCSI support|
|0x200||Wide SCSI support|
For example, to support fast SCSI, ...