This SCSI chipset is rumored to have bugs in its handling of SCSI parity, therefore it is recommended that you disable parity on all SCSI devices connected to this controller, and configure it with a 0x0ff value for its
flags directive in the
config(1) file.
This chipset has no support for raising the ATN signal, so there is no way to ever schedule a MSG_OUT phase on the bus. Currently, the driver will ultimately reset the bus if this phase is ever requested by the upper layer SCSI driver.
This chipset has no support for SCSI disconnect/reselect. This means that slow devices, such as tape drives, can hog, or “lock up” the SCSI bus.
This driver has not been tested in combination with non-SCSI devices behind Emulex or Adaptec bridges, which are common in Sun 2s and in Sun Shoebox-type configurations. These devices pre-date the SCSI-I spec, and might not behave the way the chipset code currently expects.