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README
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1991-12-12
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UltraStor Corporation
The ULTRA 14F is a high performance ISA to SCSI host adapter supporting up to
7 SCSI devices (or up to 56 devices if a SCSI bridge controller is used).
The host adapter is designed to support a variety of SCSI devices such as
Hard disk, Tape, CDROM, DAT, WORM, MO rewritable disk, Scanner, Laser
printer, etc.. A high speed 32 bit micro-processor provides the local
intelligence for host adapter command processing.
The intelligent host adapter features first party DMA data transfers up to
10MBytes/sec, low overhead SCSI command processing, command queuing,
multi-threaded operation, scatter/gather, and disk defect management.
The ULTRA 14F host adapter conforms to the industry standard SCSI-1 and SCSI-2
specification. It automatically negotiates for Fast, synchronous and/or asyn-
chronous data transfers without host/user intervention. SCSI features such as
disconnect/reselect, command linking, and command queuing are implemented to
full advantage of a multitasking environments.
The on-board BIOS allows OS drivers to interface efficiently to the host
adapter and also provides users the ease of installing SCSI drives to the
system.
In order to achieve the full advantage from the high speed ISA interface
while maintaining the downward compatibility with the current ISA disk BIOS
and disk device driver, the ULTRA 14F provides dual sets of interface protocol
on the host side, ISA mode and enhanced Bus Master mode.
The ISA mode is the industry standard (WD1003 compatible) task file register
interface, which provides compatibilty with most currently available operating
system disk device drivers. It uses the Task File Register command interface
and 16 bits PIO data transfer. The industry standard task file registers
(TFR) and full ISA disk command set are implemented for the current ISA
protocol. Under the ISA compatible mode, the ULTRA 14F can function with up
to 2 SCSI disk drives without requiring any device driver in any operating
system, providing backward compatibility with all PC operating systems and
thousands of existing PC/AT hardware, software and applications currently on
the market.
In the enhanced Bus Master mode, a multi-thread, Mail-Box type, Bus Master
protocol is implemented to reduce system CPU intervention and data command
transaction overhead. Under the Bus Master enhanced mode operation, the host
adapter will operate with a Bus Master data transfer rate up to 10Mbytes per
second. Due to its efficient Bus Master command protocol, the system CPU is
free most of the time to do other tasks while the host adapter's local CPU
does all the command processing, SCSI device accessing and data transfer
operation. It interrupts the system CPU only when the command is completed or
when an error has occurred.
Software Package
Included in the software package that comes with the ULTRA 14F are:
1. ULTRA 14F ISA SCSI Host Adapter
Utilities & Device Drivers (DOS/NETWARE)
README : This readme file.
\DOS\USPI14.SYS : DOS device driver for supporting
ASPI compatible device module
interface. Used with ULTRA 14F.
\DOS\USPI24.SYS : DOS device driver for supporting
ASPI compatible device module
interface. Used with ULTRA 24F.
\DOS\EXFDRV.SYS : Third floppy drive device driver.
\NETWARE\ASPITRAN.DSK : NOVELL NetWare 386 ASPI host adapter
administration manager.
\NETWARE\U14_31x.DSK : NOVELL device driver for
supporting ASPI compatible SCSI
device manager. Used with ULTRA 14F.
\NETWARE\U24_31x.DSK : NOVELL device driver for
supporting ASPI compatible SCSI
device manager. Used with ULTRA 24F.
2. ULTRA 14F ISA MSCSI Device Driver
For SCO UNIX System V/386 Release 3.2
\3.2.0 : Device Driver and install script
for Release 3.2.0
\3.2.2 : Device Driver and install script
for Release 3.2 v 2.0