Evm Control Switches - Motorola M68705EVM User Manual

II
TABLE 3-1.
EVM Control Switches
NAME
USER RESET
switch (S1)
ABORT
switch (S2)
PROGRAM
switch (S3)
+5VOLT
switch (S4)
MASTER RESET
switch (S5)
EVALUATION MODULE USER'S MANUAL
3-2
DESCRIPTION AND FUNCTION
Momentary action pushbutton switch - resets
EVM MCU and user 1/0, and enables map
switching to the user map. This switch can be
used as a map switch for execution of user
code from the user reset vector.
Momentary action pushbutton switch - when
pressed, returns EVM operation to the
monitor map from the user map assuming
proper operation of user code. (If MCU gets
lost in the user map, the abort is useless and
a master reset must be issued.) The abort
function has no effect when operating in the
monitor map.
On-off slide switch - applies + 12 Vdc and +27
Vdc power to the EPROM MCU programmer
circuitry. LED indicator CR7 is illuminated
when this switch is placed in the ON position.
On-off slide switch - applies +5 Vdc power to
the EPROM MCU programmer circuitry. LED
indicator CR8 is illuminated when this switch
is placed in the ON position.
Momentary action pushbutton switch - when
pressed, places EVM operation in the monitor
map and enables the EVM prompt to be
displayed on terminal CRT.
MOTOROLA
M68705EVM