1. es102.exe Driver
2. NT31.TXT File Contents

NT31.TXT Driver File Contents (es102.exe)

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				NT31.TXT
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This file describes the features and use of the NCR SDMS device drivers
for the Windows NT 3.1 operating system environment. It is divided into
the following sections:

Introduction
NCRSDMS.SYS
	Features
	Description
	Installation
	Command Line Options
	Troubleshooting
Important Additional Information
	Enabling Tagged Command Queueing
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***************************** Introduction ********************************

Windows NT provides a graphical user interface environment, without DOS, 
incorporating many high level features (refer to the Microsoft Windows NT 
documentation for details). I/O requests in Windows NT are handled by an 
I/O manager. To address a SCSI peripheral the I/O manager goes through the 
appropriate drivers (refer to the figure below). The port driver as well as 
class drivers for hard disk, floptical, CD-ROM, printer, and scanner 
peripherals are provided in Windows NT. Other class drivers, provided by 
peripheral manufacturers, may be added to support new devices. Tape device
support is built into the operating system itself, and does not require a 
class driver. NCR SDMS 3.0 provides a miniport driver, called NCRSDMS.SYS, 
to complete the path to an NCR controller or processor with an SDMS SCSI 
BIOS. The following section describes this driver and its installation.


****************************** NCRSDMS.SYS ********************************


* Features *

Synchronous negotiation (including fast SCSI)
Tagged command queuing
Supports multiple host adapters
Supports multiple Logical Unit Numbers (LUNs)
Disconnect/Reselect
Scatter/gather
Supports SCSI pass-through functionality
Wide support (single-ended and differential)


* Description *

NCRSDMS.SYS is designed to Microsoft’s specification for miniport drivers.
This driver allows connection of SCSI devices including disk drives, 
CD-ROMs, and tape drives. To support a new SCSI device the Windows NT 
architecture requires that a class driver for that type device be present 
(usually supplied by Microsoft, or possibly by the peripheral manufacturer). 
No changes to NCRSDMS.SYS are required.

SCSI commands can be passed directly from a Windows application to the SCSI 
devices by using the SCSI pass-through facility (refer to the Microsoft 
Windows NT documentation for details). This facility allows applications to 
directly control and access SCSI devices by filling in a data structure and 
calling in to the port driver.


* Installation *

New System Installation

This procedure will install the NCRSDMS.SYS driver onto a Windows NT system. 
Use this procedure when installing NT onto an unused IDE or SCSI drive. NT 
will automatically add the driver to the registry and copy the driver to the 
appropriate directories.

1. Start the NT installation by booting off the Microsoft floppy disk.

2. Press Enter when the Welcome to Setup screen appears.

3. On the Setup Method screen, choose custom setup. 

4. The installation program will then scan for SCSI adapters.

5. A screen will display the SCSI adapters found. Choose S to configure 
additional SCSI adapters.

6. Move the highlight bar to Other and press Enter. 

7. When prompted, insert the SDMS SCSI Drivers disk. 

8. The SDMS Miniport driver should be highlighted. Press Enter to proceed.

9. NT should now recognize the SDMS Miniport driver and the SCSI hardware. 
At this point, simply follow the Microsoft Windows NT installation 
procedure.

Existing System Installation

This procedure will install the NCRSDMS.SYS driver onto an existing Windows 
NT system. Use this procedure when NT has been previously installed onto an 
IDE drive.

1. Boot NT and log on as Administrator.

2. Open the Main window in the Program Manager.

3. Double-click on Windows NT Setup.

4. Choose Options, then choose Add/Remove SCSI Adapters..., then choose Add.

5. On the SCSI Adapter list, go to the bottom and choose Other.

6. When prompted, insert the SDMS SCSI Drivers disk. For the path to the 
SDMS files, leave a:\ and select OK.

7. On the Select OEM Option menu, the SDMS Miniport driver should be 
highlighted. If it is not highlighted, select it. Choose OK.

8. On the Select SCSI Adapter Option menu, choose Install with the SDMS 
driver highlighted.

At this point, the following message may occur:

The driver(s) for this SCSI Adapter are already on the system. Do you want 
to use the currently installed driver(s) or install new one(s)?

Selecting Current will use the driver already on the system, and selecting 
New will use the driver on the floppy disk. Either option leads to step 
nine.

9. For the path to the OEM SCSI adapter files, leave a:\ and select 
Continue.

10. On the SCSI Adapter Setup menu, choose Close.

11. Rebooting will load the SDMS Miniport driver.


* Command Line Options *

There are no command line options with the Windows NT device driver.


* Trouble Shooting *

DURING INSTALLATION, NO SCSI DEVICES ARE FOUND.

a. Insure that the custom setup is chosen on the Setup Method screen.

b. Insure that all devices are powered on and terminated correctly.

c. Check that no devices have duplicate SCSI IDs.


SYSTEM CRASHES DURING INSTALLATION WITH A MESSAGE INDICATING INACCESSIBLE 
BOOT DEVICE.

a. This error is usually associated with an IRQ, DMA channel, I/O (chip) 
address, or BIOS address conflict. Set the SCSI host bus adapter (HBA) board 
to use a different interrupt.


A DISK DRIVE IS RECOGNIZED AS SEVEN DIFFERENT DEVICES WHEN ONLY ONE IS 
PHYSICALLY CONNECTED TO THE SCSI BUS.

a. This error is usually caused by older SCSI devices incorrectly indicating 
to NT that they support multiple LUNs. Contact the device manufacturer for 
a firmware upgrade.


********************* Important Additional Information ********************


* Enabling Tagged Command Queueing *

The default configuration for the NCRSDMS.SYS driver does not enable tagged 
command queueing. To enable this feature, use the following procedure.
All the entries below are case sensitive and should be entered exactly as 
described.

			*** WARNING ***

Changes to the NT registry may cause the system to become inoperable and 
unusable. Before making any changes to the registry, read the Microsoft 
documentation. Follow the procedure below carefully. Do not make any changes 
other than those outlined.

1. Boot NT and log on as administrator.

2. Open the Command Prompt window and enter the command:
	
	regedt32

3. Double click on HKEY_LOCAL_MACHINE, then on CurrentControlSet, and then 
on Services. Services should now be highlighted.

4. Scroll down the list until the entry Ncrsdms is located. Clicking once
on the driver will highlight the name, and the right side of the screen will 
show the driver parameters.

5. Choose Edit, then Add Key.

For the Key Name field, enter:
	
	Device

Leave the Class field blank.

6. The new key device should now be added as a subkey of Ncrsdms. Scroll 
down and click on Device (it should be highlighted).

7. Choose Edit, then Add Value.

For the Value Name field, enter:
	
	DriveParameter

For the Data field, enter:
	
	REG_SZ

On the next screen, for the Data field, enter:
	
	UseTags=1

8. Choose Registry, then Exit to save changes. Rebooting will now enable 
tagged command queueing.