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User’s Guide 21020285 D
Appendix D Defaults
Hardware Defaults Page D - 3
Hardware
Defaults
This section describes the defaults you will find for both the jumpers on the
board, and the Hardware Ports you will use to set-up the board and operate it.
Board
Jumpers
These are the factory settings for the jumpers on the board. For more
information see Chapter 3.
Hardware
Ports
These are the values that will be written if you do not specify other values. See
Chapter 2 for more information.
Jumper Default Setting Meaning
VMEbus Address Modifier No jumper at AM2 2D, Short Supervisory Access
VMEbus Address Jumper at A12 EE00H
SCSI Configuration Jumper Block:
Parity Checking OUT Enabled
SCSI Bus Reset at Power-up OUT Enabled
RF3880 SCSI ID OUT ID = 0
Bus Request/Grant Level
6 jumpers installed:
pins 4-5 under 0
pins 4-5 under 1
pins 4-5 under 2
pins 1-2, 3-4, 5-6 under 3
Level 3
Sysfail IN Sysfail signal asserted on bus during Reset.
SCSI Bus Terminators IN RF3880 provides SCSI Bus Termination.
Table 125: Hardware Defaults - Jumpers
Port Default Meaning
Address Buffer Port:
Byte Swapping Control 0 No Swapping
Word Swapping Control; 0 No Swapping
Width 1
32 bit or 64 bit transfers, dependent on address
modifier used.
Status Port:
Entered Bit 0 Initial value.
Ready Bit 1 After Reset has completed.
Code 02H Whenever ERR bit is zero, this should be 02H.
Channel Attention Port
There is no default:
Write a 2 to acknowledge receipt of Target Selection Data Structure.
Write a 1 to initiate a Command List.
Write a 0 to issue a Single Command
Reset Port There is no default: Write any value to this port to get Reset.
Table 126: Defaults for Hardware Ports