Specifications

Chapter 3: BIOS Configuration

VME Menu

Use the options in this menu to configure the VMEbus interface and addressing.

ID Identifies the system’s EXMs. Enter the EXM-IDs for the EXMs

you intend to install in this system. You can install up to six

EXMs.

Option Byte 1/ Option Byte 2 Specifies option byte configuration information. Each EXM

expansion module has values you must enter for the option byte

1 and option byte 2 configuration data. When you are finished

with this menu, press the right arrow key to move to the VME

Menu, or press ESC.

Field Description

Arbitration Priority Sets the arbitration priority. Possible values include 0, 1, 2, and

3, with 0 indicating the highest priority. This determines which

VMEbus request signal the EPC-8A uses when it accesses the

VMEbus.

Arbitration Mode Selects the arbitration mode. Possible values are “Round Robin”

or “Priority.” This determines how the EPC-8A performs bus

arbitration when it is the VMEbus Slot-1 controller. If round-robin

is selected, the four bus request lines have equal priority. If

Priority is selected, bus request 0 has highest priority.

Bus Release Selects the Bus Release mechanism. Possible values are

RONR (VXI) and ROR (VME).

Field Description

Figure 3-11. VME menu

Main Advanced EXM Exit

Arbitration Priority: [0]

Arbitration Mode: [Round Robin]

Bus Release: [RONR (VXI)]

ULA: [00]

Item Specific Help

F1 Help ↑↓ Select Item -/+ Change Values F9 Setup Defaults

ESC Exit ←→ Select Menu Enter Select Sub-Menu F10 Previous Values

VME