Battery And Test Jumpers (J2, J4); Switch Settings - Xycom XVME-678 Manual

XVME-678/688 Manual
July 1994
2.2.4 Battery and Test Jwnpers (J2, J4)
Jumper J2 enables the XVME-678/688 on-board battery when positioned to A (default), and disables the
battery when positioned to B. This jumper should remain positioned to A. To disable the battery, position
switch 6 of SWI to open (see Section 2.3). See WARNING in Section 2.1 regarding a disabled
battery.
Jumper J4 is a test jumper that supplies Vcc to OSC. This jumper must always remain positioned to A.
2.3 SWITCH SETTINGS
The XVME-678/688 has one eight-position switch, SWI. This switch allows critical options, which are
not software accessible, to be enabled in a common area. Figure 2-1 on page 2-2 shows the switch
location. The settings and their functions are shown in the table below.
Table 2-2. XVME-678/688 SWI Switch Settings
Position Setting Function
1 Open VME SYSRESET* is not driven on the VMEbus at power-up.
Closedvi' VME SYSRESET* is driven on the VMEbus at power-up.
2 Open VME SYSRESET* is not caused by the toggle switch.
Closedvi'
VME SYSRESET* is caused by the toggle switch.
3 Openvi'
VME SYSFAIL is not driven on the VMEbus.
Closed VME SYSFAIL is driven on the VMEbus.
4 Open
VME system resource function is disabled.
Closedvi'
VME system resource function is enabled.
5 Openvi' Not user configurable. Must remain open.
6 Openvi'
Disables the battery.
Closed
Enables the battery.
7 Openvi'
Enables the keyboard.
Closed Disables the keyboard.
8
Openvi' Enables color video.
Closed Enables monochrome video.
vi' indicates default settings
2-5