2-1
2
2Startup and Operation
Introduction
This chapter provides information on powering up the MVME162P4 VME
Embedded Controller after its installation in a system, and describes the
functionality of the switches, status indicators, and I/O ports.
For programming information, consult the MVME1X2P4 VME Embedded
Controller Programmer’s Reference Guide.
Front Panel Switches and Indicators
There are two switches (ABORT and RESET) and eight LEDs (FAIL, STAT,
RUN, SCON, LAN, FUSE, SCSI, and VME) located on the MVME162P4 front
panel.
Table 2-1. MVME162P4 Front Panel Controls
Control/Indicator Function
Abort Switch (
ABORT) Sends an interrupt signal to the processor. The interrupt is normally
used to abort program execution and return control to the debugger
firmware located in the MVME162P4 Flash memory.
The interrupter connected to the Abort switch is an edge-sensitive
circuit, filtered to remove switch bounce.
Reset Switch (
RESET) Resets all onboard devices. Also drives a SYSRESET∗ signal if the
MVME162P4 is system controller. SYSRESET∗ signals may be
generated by the Reset switch, a power-up reset, a watchdog timeout,
or by a control bit in the Local Control/Status Register (LCSR) in the
VMEchip2 ASIC. For further details, refer to Chapter 4, Functional
Description.
FAIL LED (DS1, red) Board failure. Lights if a fault occurs on the MVME162P4 board.
STAT LED (DS2, amber) CPU status. Lights if the processor enters a halt condition.
RUN LED (DS3, green) CPU activity. Indicates that one of the local bus masters is executing
a local bus cycle.
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