EISA Configuration Settings

The BusTek BT-742A Host Adapter fully supports the EISA automatic 
configuration facility, and is operational with most computers using the 
default settings in the BT-742A configuration diskette supplied with the 
board. The host adapter configuration options will need to be changed if 
conflicting port assignments or memory allocation is encountered. Every 
BusTek EISA controller comes with a floppy diskette which contains the BusTek 
configuration file (!BUS4201.CFG). 

Before starting, perform the following steps:

1.      Copy the BusTek !BUS4201.CFG file onto the configuration floppy 
	diskette provided with your host system computer.
2.      Place the configuration floppy diskette into your system floppy drive 
	and type "CF" (or name of your configuration program).
3.      Follow the directions on your screen to select the configure 
	computer option. An "Auto Added" prompt will advise you that the 
	BT-742A Host Adapter has been installed into a previously empty 
	EISA slot. 
4.      Follow the directions on your screen to select the BT-742A board.
	The default settings for configuration options as shown on the 
	screen are illustrated in Figure 3. Select the desired options by 
	moving the cursor to the field desired and press the return key. A 
	submenu for the options selected will appear. To set the option in the 
	submenu, use the cursor keys to highlight the selection, then press 
	the return key. 

Before operating the host adapter, verify that the configuration settings 
have been set according to the target system's operating requirements. The 
figures that follow show the settings for option submenus. 

NOTE:  For details on greater than 1 GB support, refer to the
       heading, "Disk Drive Capacity," later in this section.

Host I/O Port Address:  This option selects the starting address of the 
block of four I/O ports required by the BusTek BT-742A Host Adapter board. 
The default starting address is 330h.

Host Interrupt Request:  This option selects the host interrupt channel. The 
default setting is channel 11.

Host BIOS (16K Bytes) Address:  This option selects the block of address 
space reserved for the BusTek BT-742A BIOS starting address. The default 
setting is 0DC000h. If more than one host adapter is installed in the same 
system, only one may have the BIOS enabled. The BIOS on each of the additional 
adapters must be disabled.

ISA DMA Channel Emulation:  The default setting is no DMA enabled. The DMA 
channel which is reported to the host computer at the Inquire Configuration 
command is set by this option.

ISA DMA Channel Emulation

		(  )DMA Channel 5 - default
		(  )DMA Channel 6
		(  )DMA Channel 7
		(  )No DMA Channel 
			   
Host-Adapter SCSI ID.:  The as-shipped (default) SCSI ID is 7. The BusTek 
BIOS requires that your SCSI drives be configured for SCSI ID 0. This 
requirement is only important if you intend to boot your system from the 
BT-742A Host Adapter.

SCSI Parity:  The default setting is enabled. Setting this option to 
"Disable" disables the SCSI bus parity.

Disk Drive Capacity:  By default the Disk < 1 GB or SCO UNIX  op-tion 
is turned on.  However, you can enable the > 1 GB support by en-abling 
the Disk > 1 GB and not SCO UNIX option.

Disk Drive Capacity

		(  )Disk < 1 GB or SCO UNIX - default
		(  )Disk > 1 GB and not SCO UNIX

After you have enabled the > 1 GB support on revision 'G' and above, 
the host adapter can support up to seven SCSI disk drives with each 
drive up to 8 GB in capacity.  With the addition of this feature, the 
"SCSI Auto Sense" parameter has been removed from the EISA configuration.  
Example - If a disk drive is more than 1 GB but less than 2 GB 
in capacity, you should set the host adapter for >1 GB support.  If 
you were to run FDISK, it will display half of the cylinder count of 
the total drive capacity because now the disk is formatted as 2 MB 
per cylinder. The following table summarizes the translation scheme used 
with the board.

	       < 1 GB              >1 GB          > 2 GB            > 4 GB
 
  Sectors Per   S=32                32              32                63
  Track                                                            
  
  Number        H=64                128             256               256
  of Heads
	  
  Capacity Per  C=1 MB              2 MB            4 MB              8 MB
  Cylinder
	  

SCO UNIX  Limitations - Disk capacity cannot exceed 1 GB due to 
the SCSI device driver that is built into SCO UNIX.

Novell Limitations - Novell NetWare will support greater than 
1 GB on the disk drive if the BIOS on the host adapter is disabled, and 
you are booting from another device.  This enables NetWare to use the entire 
disk drive as a NetWare volume. If the BIOS is enabled and you are booting 
from a DOS partition, then there is a 1 GB limit.  This limitation is due to 
the fixed parameters in the NetWare SCSI device driver.

Adapter Initiate Synchronous Negotiation:  The default setting is disabled. 
This mode assumes that a SCSI target device connected to the BT-742A will 
initiate the synchronous negotiation. Some target devices mandate that they 
must initiate the synchronous transfer sequence. Such devices may fail to 
respond to commands from the BT-742A if a synchronous negotiation occurs 
unexpectedly. Conversely, other target devices may expect an initiator to 
begin the synchronous negotiation sequence. If this class of SCSI target 
devices is connected to the BT-742A, the option may be enabled to allow the 
host adapter board to initiate the negotiation for a synchronous data 
transfer with a selected SCSI target device.

Host Interrupt Request

		(  )INT11 Edge - default
		(  )INT10 Edge
		(  )INT14 Edge
		(  )INT15 Edge
		(  )INT9 Edge
		(  )INT12 Edge
		(  )Disable INT
		(  )INT11 Level
		(  )INT10 Level
		(  )INT14 Level
		(  )INT15 Level
		(  )INT9 Level
		(  )INT12 Level
		      
Floppy Subsystem:  The default setting for this option is for the floppy drive 
to be disabled. When the floppy subsystem is disabled, the floppy disk 
controller will disregard read and write commands. When the floppy subsystem 
is enabled, the floppy disk controller is allowed to respond to read or 
write requests. Setting the floppy subsystem for Primary produces a primary 
floppy disk address of 3FX. The secondary address of 37X is set when the 
secondary option is selected.

Hard Disk Initialization

This section describes the system set-up, initialization, partitioning and 
formatting of hard disk drives used with the BusTek BT-742A Host Adapter. 
These procedures will erase all data on your disk drives. Before following 
these procedures make sure that all necessary data is backed up on another 
drive. 

Setup, Initialization and Partitioning Procedure

To perform setup, initialization, and partitioning, proceed as follows:

1.      After plugging in, connecting and configuring your host adapter 
	(see the previous parts of this section), reset and reboot your 
	system.
2.      Insert the system diagnostic diskette in the drive; or execute the 
	host's internal diagnostic/setup program. See your particular 
	system's installation instructions. 
3.      In accordance with the menu that appears on the system monitor, run 
	SETUP and configure the host CMOS RAM options. Set the hard disk 
	option to "No Hard Drive Installed".

Steps 4 through 8 below may not be necessary if your SCSI hard disk drive 
has already been formatted.

4.      Re-boot the host system and insert the MS-DOS diskette containing 
	the DEBUG program.

5.      After the MS-DOS prompt, type the following for low-level format:

6.      Then, perform the following steps on your screen monitor to 
	configure and perform a low-level format on attached devices:

A)      The "SCSI Fixed Disk Format Utility" will appear on the screen. 
	Enter "1" to view the attached devices, then press the return key.

B)      A list of all attached drives will then be shown under the option 
	prompt. Press the "2" key, until the drive to be formatted is the 
	current drive.

C)      Press "3" then press the return key, to format the drive. The 
	following prompt will be shown:
	All data on this drive will be lost!
	Proceed with low level formatting? (Y/N) __
	Enter "Y" to proceed with low level formatting and follow 
	instructions as they appear on the screen.

D)      The system will format the SCSI drive selected. When the format is 
	finished, press any key to go back to the main menu shown in step 6A 
	above. Enter "4" to verify the drive, then press the return key. The 
	following prompt will be shown:
	All data on this drive will be verified.
	and bad data areas will be reassigned.
	Proceed with low level verification? (Y/N) __
	Enter "Y" to proceed with verification. 

E)      When the verification is finished, press any key to go back to the 
	main menu shown in step 6A above. Enter "5" to exit to DOS, then 
	press the return key.
	Steps 7 and 8 below may not be necessary if the operating system to 
	be installed is not MS/DOS. 

7.      Run the MS-DOS FDISK program to partition the disk for the number 
	of cylinders to be used by DOS. The following steps are recommended 
	for users who are not familiar with the MS-DOS FDISK program. See 
	your MS/DOS manual for information on the FDISK command.

A)      Enter "fdisk", followed by the return key. 

B)      Enter "1", followed by the return key to create a DOS partition. 
	
C)      Enter "1", followed by the return key to create a primary DOS 
	partition. 

D)      Enter "Y", followed by the return key to create a primary DOS drive 
	partition with the maximum size. 

	When the partitioning is done (indicated by another prompt), press 
	any key to return to DOS.
 
8.      Install MS-DOS by running the FORMAT program as instructed by MS-DOS 
	normal installation procedures. The next steps are recommended for 
	operators who are not familiar with the MS-DOS FORMAT program. 
      
	A)      Enter any legal file name to label the volume just created. 
	Refer to your system's operator's manual for more details on MS-DOS 
	format procedures. This concludes the BusTek BT-742A Host Adapter PCB 
	installation and software installation procedures.

Warranty Information
If damage to the board has occurred, return it in the protective envelope 
with this manual to your BusTek board supplier. The shipping agent should 
also be notified if the unit has been damaged during shipment. 
