Force SYS68K/CPU-30 R4, Техническое справочное руководство

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Hardware Description SYS68K/CPU-30 R4 Technical Reference Manual
Page 92
3.14 Function Switches and Indication LEDs
3.14.1 RESET
Function
Switch
A reset of all on-board I/O devices, the FPCP and the CPU is performed
when the RESET switch is pushed to the "UP" position. RESET is held
active until the switch is in "DOWN" position.
In addition, a local timer guarantees a minimum reset time of 200-300ms.
Power fail and power up also force a reset (200-300ms) to start the board
if the supply voltage is out of range (below approximately 4.7 Volts).
If enabled, the reset is also driven to the VMEbus.
SEE ALSO: For more information, please refer to Section 3.22.2, ‘The
SYSRESET* Signal,’ on page 110 and Section 3.23, ‘Reset Generation,’
on page 112. In combination with the ABORT switch, the RESET switch
has a special function which is described in the Boot Software description
of the FGA-002 User's Manual.
The Reset Function can be controlled by switch SW7-1.
3.14.2 ABORT
Function
Switch
An interrupt on a software programmable level is provided on the board
to allow an abort of the current program, to trigger a self-test or to start a
maintenance program. The ABORT switch is activated in "UP" position
and deactivated in "DOWN" position. In combination with the RESET
switch, the ABORT switch has a special function which is described in
the Boot Software description of the FGA-002 User's Manual.
The Abort Function can be controlled by switch SW7-2.
3.14.3 "RUN" LED The uppermost LED (below the RESET and ABORT switches) is the
RUN LED.
This bicolor LED is green when the processor is not in HALT state. It is
red during the reset phase, or when the processor is in HALT state.
SW7-1 Description
OFF (default) Reset Key enabled
ON Reset Key disabled
SW7-2 Description
OFF (default) Abort Key enabled
ON Abort Key disabled
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