Function
Jumper Settings
CPU Voltage
+
(Source from on
board regulator)
short 2-3
JP21 short 2-3
JP22 short 2-3
Flash ROM
only when programming
a + 5V flash ROM
short 3-2
only when programming
a +
flash ROM
short 2-3
Normal EPROM
open
Note:
Opens for
Internal CLK 3X
Shorts for DX4 Internal CL K 2X
Opens for external keyboard control
Shorts for in
keyboard control.
3.2 Connectors
There are several connectors located on the
They are used to con-
nect with some peripheral devices to enhance the operating performance of
the system. Refer to Figure 3.1 for the positions of all the connectors on the
mainboard. The following table lists the connectors on the
Connector
Function
Power Supply Connector
J 2
External Battery Connector
J 3
Keyboard Connector
J 2 7
Suspend/Resume (Push Botton)
J 2 8
Turbo LED
J 2 9
External Speaker Connector
Hard ware Reset Connector
Turbo Switch
J 3 2
Keyboard Lock/Power LED
Table 3-2. Mainboard Connectors
Note:
You can only push the J27 button to enter suspend/re-
sume modes when the system is in
state other-
wise the system will halt or your data may be
destroyed.