Hello ALAN!
Saturday April 11 1998 18:31, ALAN LO wrote to All:
 > hi!
 >    i have a problem...  My scsi card (Fire Port 40 by Diamond with Sym 
ios
 > Logic 53c875) is not reconized.  Now can someone help me please?  Thanks 
n
 > adv.
Available at ftp://ftp.symbios.com/pub/symchips/scsi/drivers/OS2_Driver/
=== Cut ===
Symbios is providing the enclosed SCSI Device Management System
(SDMS) 4.0 drivers electronically for your convenience.  However, this
does not imply technical support on the part of Symbios, should
any problems arise during the use or operation of these drivers.  For
the following reasons, Symbios highly recommends that you contact
either the place where you purchased your system or the Original Equipment
Manufacturer (OEM) of your system motherboard for technical issues
pertaining to SDMS:
 * Symbios works with its OEM customers to correct any
 anomalies that may occur within the complex interaction of the
 operating system, driver, BIOS and hardware.  Your OEM is most
 aware of these interactions and would be the one most capable of
 diagnosing a problem and, if necessary, working with Symbios
 Logic to correct it.  It is the experience of Symbios that
 what appears to be a SCSI problem often is not and is indeed a
 system or software installation problem.
 * By contacting the OEM for support, you will be assured of
 receiving the latest SDMS BIOS and drivers that have been
 verified, certified, and licensed by your OEM on that OEM's
 hardware platform.
Drivers are being provided for the following operating systems:
  DOS
  OS/2
  Novell NetWare
  SCO UNIX
  Windows 95
  Windows NT
  Unixware
=== Cut ===
=== Cut ===
***************************************************************************
     INTRO.TXT
***************************************************************************
This file presents general information about the Symbios SDMS software
product. It is divided into the following sections:
General Description
Overview
 SCSI BIOS
 SCSI Device Drivers
Before You Begin
 Basic Rules For SCSI Host Bus Adapter and Device Installation
**************************************************************************
*************************** General Description **************************
The Symbios SCSI Device Management System (SDMS) is a complete software
package that solves the increasingly complex problem of managing system I/O.
It seamlessly addresses hardware and software interfaces by supporting the
Symbios family of SCSI processors and controllers, and a wide range of
SCSI peripheral devices, while offering interoperability across application
programs, operating systems, and host platforms. SDMS consists of a resident
SCSI BIOS that manages all SCSI controller or processor specific functions,
and a series of SCSI device drivers that provide operating system and
peripheral specific support.
SDMS provides a standard method to interface SCSI I/O subsystems with 
evices,
operating systems, and application software. It also enhances system
capabilities already provided by SCSI controllers and processors by
facilitating multi-threaded I/O support, system-wide SCSI device access, and
creation of new applications.
******************************** Overview ********************************
An Symbios SCSI controller or processor can control peripherals such as
hard disk drives, CD-ROM drives, tape drives, and removable media. SCSI
peripherals are intelligent devices that do not need the constant attention
required by non-intelligent devices. Up to 15 SCSI peripheral devices can be
connected (via the SCSI bus) to a SCSI host bus adapter card on which the 
CSI
controller or processor resides.
A SCSI host bus adapter can also function as a secondary adapter in a system
which already has a primary hard drive controller card (IDE, ESDI, ST506).
Only SCSI host bus adapters will do this, expanding the possibilities for
system configuration.
* SCSI BIOS *
A SCSI BIOS is the bootable ROM code that manages SCSI hardware resources. It
is specific to a family of Symbios SCSI controllers or processors. An
Symbios SCSI BIOS integrates with a standard system BIOS, extending the
standard disk service routine provided through INT13. It is also responsible
for processing and executing SCSI requests communicated from a SCSI device
driver or application.
An important feature of the SCSI BIOS is that it is completely operating
system independent. All ROM based SCSI BIOS support booting from a SCSI hard
disk and can be ported to a variety of hardware platforms. They also support
16- and 32-bit operating systems running under real or protected addressing
modes.
The Symbios SCSI BIOS provides a hardware independent interface which
isolates the operating system drivers and SCSI application programs from the
underlying hardware. This enables a single driver to work with any host
adapter or SCSI controller which has an Symbios SCSI BIOS.
During its boot time initialization, the SCSI BIOS determines if another hard
disk is already installed. If there is, the SCSI BIOS will map any SCSI 
rives
it finds behind the drive already installed. Otherwise, the SCSI BIOS will
install drives starting with the system boot drive. In this case, the system
will boot from a drive controlled by the SCSI BIOS.
If the operating system used is DOS 5.0 or above, the SCSI BIOS allows access
to a maximum of eight SCSI hard disks via INT13. The number controlled by the
SCSI BIOS depends on the number of non-SDMS controlled disk drives in the
system. For more information on SCSI BIOS control of hard disk drives, see
Chapter 2, Device Drivers for DOS/Windows.
* SCSI Device Drivers *
The SCSI device drivers translate an operating system I/O request into a data
structure, and transport the structure to the SCSI BIOS (see figure 1-2). An
Symbios SCSI device driver is operating system specific, but completely
hardware independent. The hardware specifics are addressed by the SCSI BIOS.
Although a driverless solution exists for the DOS operating system, and
provides adequate support for many applications, loading a driver (or drivers
in some cases) will provide additional features. Connecting peripherals other
than hard disk drives, for example, requires loading the appropriate
driver(s).
The following chapters provide information on the use and installation of 
these 
drivers within each operating system.
**************************** Before You Begin ****************************
SDMS software requires an IBM PC/AT or compatible computer with an 80386 or
higher microprocessor. An understanding of basic operating system commands is
assumed. In addition, users of this manual should have a general knowledge of
the SCSI standard. For background information on this subject, refer to the
SCSI-2 specification or the book SCSI: Understanding the Small Computer
System Interface. Sources for these publications are listed in the preface of
this document.
Before using the SDMS software, the Symbios SCSI controller should be
configured into your system, taking into account the configuration of other
host bus adapters and system resources (see Basic Rules... listed below).
Symbios recommends that all data be backed up before making any changes
or installing any software, including Symbios SCSI controllers and
software. Failure to adhere to this accepted computer practice may lead to
loss of data.
* Basic Rules For SCSI Host Bus Adapter and Device Installation *
Both ends of the SCSI bus must be terminated. Refer to the hardware manuals
for the devices and the host bus adapter to determine what the terminators
are, and where they are located.
Each SCSI device must be configured with a different ID number. Refer to the
hardware manuals for the devices and the host bus adapter to locate where the
jumpers or dip switches are for setting ID numbers. Usually the host bus
adapter is ID 7. The devices are then set at IDs 0 through 6 (plus 8 through
15 for wide SCSI). The bootable hard drive must have the lowest numerical ID.
The red or blue line on a standard SCSI cable (or the black line on one end
of a multi-colored SCSI cable) designates pin one on the cable connector and
must connect to pin one on the device or host bus adapter connector. Refer to
the hardware manuals for the devices and the controller to locate pin one of
the connector.
If the system already has an internal bootable hard drive (IDE, ESDI, ST506),
the drivers for the SCSI device(s) must reside on the internal bootable hard
drive.
For non-PCI devices, whenever installing multiple host bus adapters in one
system, each card must be set to a different base BIOS address, as long as
the primary adapter has a lower base BIOS address than the secondary
adapter(s). Also, make certain each adapter is set to a different base I/O
address and IRQ.
=== Cut ===
Dave
--- GoldED/2 3.00.Alpha4+ 13LM2
---------------