LSI U160 User Manual
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3.75 pc
10.25 pc
11.25 pc
38.25 pc
4.333 pc
48.583 pc
52.5 pc
34.5 pc
44.25 pc
B-7
SCRIPTS
Processor
The SCRIPTS processor allows users to fine tune SCSI operations with
regard to unique vendor commands or new SCSI specifications. The
SCRIPTS processor fetches SCRIPTS instructions from system memory
to control operation of the LSI53C8XX or LSI53C10XX device.
SDMS
Storage Device Management System. An LSI Logic software product that
manages SCSI system I/O.
Single-Ended
SCSI
A hardware specification for connecting SCSI devices. It references each
SCSI signal to a common ground. This is the most common method (as
opposed to differential SCSI which uses a separate ground for each
signal).
STA
SCSI Trade Association. A group of companies that cooperate to
promote SCSI parallel interface technology as a viable mainstream I/O
interconnect for commercial computing.
SureLINK
The domain validation method developed and used by LSI Logic.
SureLINK provides three levels of integrity checking: Basic (level 1),
Enhanced (level 2), and Margined (level 3).
Synchronous
Data Transfer
One of the ways data is transferred over the SCSI bus. Transfers are
clocked with fixed frequency pulses. This is faster than asynchronous
data transfer. Synchronous data transfers are negotiated between the
SCSI host adapter and each SCSI device.
System BIOS
Controls the low-level POST (Power-On Self-Test), and basic operation
of the CPU and computer system.
TolerANT
A technology developed and used by LSI Logic to improve data integrity,
data transfer rates, and noise immunity, through the use of active
negation and input signal filtering.
Ultra SCSI
A standard for SCSI data transfers. It allows a transfer rate of up to
20 Mbytes/s over an 8-bit SCSI bus and up to 40 Mbytes/s over a 16-bit
SCSI bus. SCSI Trade Association (STA) supports using the term “Ultra
SCSI” over the older term “Fast-20”.
Ultra2 SCSI
A standard for SCSI data transfers. It allows a transfer rate of up to
40 Mbytes/s over an 8-bit SCSI bus, and up to 80 Mbytes/s over a
16-bit SCSI bus. SCSI Trade Association (STA) supports using the term
“Ultra2 SCSI” over the term “Fast-40”.