Installation and Setup
2-3
Switch Settings
The XVME 689-VR7 has one four-pole switch (SW1) shown in Figure 2-2. The switches
functions are explained in table 2-2. This switch controls the system response to the front panel
Abort switch. Figure 2-2 shows the switch settings required to reset on the XVME 689-VR7
CPU, to reset only the VME backplane, or to reset both. The XVME 689-VR7 is shipped with
all four switches in the closed position (which causes the push button reset switch to reset both
the XVME 689-VR7 and the VME backplane).
Figure. 2-2
SW1 XVME 689-VR7 has a 4 position DIP switch to control the following functions.
Table 2-2 Four-Pole Switch (SW1) Functions
Position
Open
Closed
1
Do not respond to SYSRESET*
Respond to SYSRESET*
2
Toggle switch does not cause SYSRESET*
Toggle switch causes SYSRESET*
3
SYSFAIL* asserted on Power Up
SYSFAIL* not asserted on Power
4
No local reset
Toggle switch causes local reset
Registers
The XVME 689-VR7 modules contain the following Xembedded-defined I/O registers: 218h,
219h, 233h, and 234h.
Register 218h – Abort/CMOS Clear Register
This register controls the abort toggle switch and allows you to read the CMOS clear jumper
(main board J21).
Table 2-3 Abort/CMOS Clear Register Settings
Bit
Signal
Result
R/W
0
RESERVED
Reserved
1
RESERVED
Reserved
2
RESERVED
Reserved
3
RESERVED
Reserved
4
ABORT_STS
1 = Abort toggle switch caused interrupt
R
5
ABORT_CLR
0 = Clear and disable abort
1 = Enable abort
R/W
6
RESERVED
Reserved
7
CLRCMOS
0 = Clear CMOS
1 = CMOS okay
R
Summary of Contents for XVME-689-VR7
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