Introduction; Switches And Indicators; Abt/Rst Switch - Motorola AltiVec MVME5100 Series Installation & Use Manual

Introduction

This chapter provides operating instructions for the MVME5100 Single
Board Computer. It includes necessary information about powering up the
system along with the functionality of the switches, status indicators, and
I/O ports on the front panels of the board.

Switches and Indicators

The front panel of the MVME5100 as shown in
one dual function toggle switch
(LED) status indicators (

ABT/RST Switch

Abort Function
When toggled to
processor. The interrupt is normally used to abort program execution and
return control to the debugger firmware located in the processor and flash
memory.
The interrupt signal reaches the processor via ISA bus interrupt line IRQ8.
The interrupter connected to the
filtered to remove switch bounce.
Reset Function
When toggled to
reset, the switch must be depressed for more than 5 seconds.
The on-board Universe ASIC includes both a global and a local reset
driver. When the ASIC operates as the System Controller, the reset driver
provides a global system reset by asserting the SYSRESET# signal.
2Operation
(ABT
) located on the front panel.
BFL, CPU
, the switch generates an interrupt signal to the
ABT
ABORT
, the switch resets all onboard devices. To generate a
RST
Figure 1-1, incorporates
/ ) and two Light-Emitting Diode
RST
switch is an edge-sensitive circuit,
2
2-1