Xycom XVME-653, Manual

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XVME-653/658 Manual
3-16
System Controller Submenu
The XVME-653/658 automatically provides slot 1 system resource functions. The sys-
tem resource functions are explained in the Universe manual. (Contact Tundra at
www.tundra.com for a .pdf version of the Universe II manual.) This function can be dis-
abled using jumper J1. Refer to Jumper Settings in Chapter 2 (p. 2-2) for more infor-
mation. System resources are VMEbus Arbiter, BERR timeout, SYSCLK, and IACK
daisy chain driver. These resources must be provided by the module installed in the sys-
tem controller slot. The status of the XVME-653/658 system resources is reported in an
uneditable field.
Note
The BERR timeout is the VMEbus error timeout value.
PhoenixBIOS Setup–Copyright 1985-95 Phoenix Technologies Ltd.
VMEbus
System Controller Item Specific Help
System Resources: Enabled
If the line item you are viewing
BERR Timeout: [64µs]
has specific help, it will be listed
Arbitration Mode: [Priority/Single]
here.
F1 Help
↑↓
Select Item -/+ Change Values F9 Setup Defaults
ESC Exit
←→
Select Menu Enter Select
&
Submenu F10 Previous Values
Figure 3-13 System Controller Submenu
Table 3-13 System Controller Submenu Options
Option Description
System Resources Enables or disables system resources. You cannot edit this field. It is automatically detected
by the board.
BERR Timeout*
Sets the VMEbus error timeout. Choices are 16
µ
s , 32
µ
s , 64
µ
s , 128
µ
s , 256
µ
s , 512
µ
s ,
1024
µ
s , and Disabled . The default is 64
µ
s .
Arbitration Mode* Sets the VMEbus arbitration mode. Choices are Priority/Single or Round Robin . Prior-
ity/Single is the default.
*Note
These fields are only referenced if the board is the system controller. If it
is not the system controller, the setup field values are ignored, BERR
Timeout is set to 0 = Disabled , and Arbitration Mode is set to Round
Robin , with an Arbitration timeout value of 0 ( Disabled ).