Specifications

EPC-5A Hardware & Software Reference Manual
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Page 42
VME Menu
The options in the VME menu are used to configure the EPC-5A’s VME interface.
The VME Menu is shown below.
Arbitration Priority
This option is used to select among the four (0 through 3) VMEbus priority levels
used when the EPC-5A requests the bus for a VME access. Priority level 0 is the
lowest priority while priority level 3 is the highest priority. The default is priority
level “0”.
Arbitration Mode
This option is used to select the arbitration algorithm that the EPC-5A’s VMEbus
arbiter uses when the EPC-5A is the slot 1 controller. Selecting “Round Robin”
configures the arbiter to “scan” the bus request lines from highest priority down to
lowest priority and grant the bus to the first requester it finds. Selecting “Priority”
configures the arbiter to grant the bus to the highest priority requester at any time.
The default is “Round Robin”.
PhoenixBIOS Setup - Copyright 1985-96 Phoenix Technologies Ltd.
Item Specific Help
Arbitration Priority: [0]
F1 Help Select Item -/+ Change Values F9 Setup Defaults
ESC Exit Select Menu Enter Select Sub-Menu F10 Previous Values
Main Advanced EXM VME Exit
Bus Release: [RONR]
Arbitration Mode: [Round Robin]
ULA: [FE00(F8)]
VME Boot Scan Range: [A24 FF000000h-FFF00000h]
Slave Memory Offset: [Disabled]
Figure 4-10. VME Setup Menu.