Front Panel Switches And Leds; Front Panel Switches; Front Panel Leds - Motorola MVME187 Installation Manual

Front Panel Switches and LEDs

There are two switches and eight LEDs on the boardÕs front panel
(refer to
Switch
Name
The
RESET
RESET
board is system controller. The
When enabled by software, the
programmable level. It is normally used to abort program execution and
ABORT
return to the debugger.
LED
Color
Name
Red The
FAIL
Yellow The
STAT
The
Green
RUN
indicates one of the local bus masters is executing a local bus cycle.
The
Green
SCON
controller.
Green The
LAN
The
Green
+12V
transceiver interface.
Green The
SCSI
The
Green AS* is asserted by the VMEchip2) or when the board is accessed by
VME
the VMEbus (VMEchip2 is the local bus master).
Table 2-3, Table 2-4, and
Table 2-3. Front Panel Switches
Description
switch resets all onboard devices and drives SYSRESET* if the
RESET
ABORT
Table 2-4. Front Panel LEDs
LED lights when the BRDFAIL signal line is active.
FAIL
LED is controlled by software on the MVME187.
STAT
LED lights when the local bus TIP* signal line is low. This
RUN
LED lights when the MVME187 is the VMEbus system
SCON
LED lights when the LAN chip is local bus master.
LAN
LED lights when +12V power is available to the Ethernet
+12V
LED lights when the SCSI chip is local bus master.
SCSI
LED lights when the board is using the VMEbus (VMEbus
VME
Functional Description
Figure 3-1 on page
switch may be disabled by software.
switch generates an interrupt at a user-
Description
3-6).
2-11
2