The LSI_U3 Storport miniport driver sample code that is included in the WDK is LSI's production SYM_U3 Scsiport-based miniport driver after being ported to work with Storport instead of Scsiport. The resulting Storport-based miniport driver supports LSI Ultra160 parallel SCSI host bus adapters with 53C1010-33 or 53C1010-66 chips. Some of the characteristics of these host bus adapters include:
Older technology SCSI controller hardware with minimal intelligence
Very simple custom 8-bit RISC processor with 8 KB internal RAM
Hardware and scripts limited to use 256 queue tag values per adapter
Hardware and scripts designed to match Scsiport capabilities
Adjustments were made in the LSI_U3 miniport driver to match Storport advanced functionality to the limited hardware capabilities of the host bus adapters themselves.