6VA7+
3-6
Since 168 pins DIMM module is 64 bits width, therefore 1 piece of DIMM
module may match a 64 bits system. The total memory size is 16 MB ~ 1.5GB
SDRAM(256Mb technology). The DRAM installation position refer to Figure 3.1,
and notice the Pin 1 of DIMM module must match with the Pin 1 of DIMM socket.
Insert the DRAM DIMM module into the DIMM socket at Vertical angle. If there
is a wrong direction of Pin 1, the DRAM DIMM module could not be inserted into
socket completely.
3.5. CPU SPEED SETUP
The system bus frequency can be switched at 66MHz, 100MHz and 133MHz by
adjusting DIP SW2. The CPU frequency ratio can be switched from X3 to X9.5
by adjusting DIP SW1. The user can set up CPU speed for 300~733MHz
processors by adjusting SW1 and SW2 properly.
The CPU speed must match with the frequency RATIO. It will cause system
hanging up if the frequency RATIO is higher than CPU's.
SW1:
(O:ON / X:OFF)
DIP SWITCH (SW1)
FREQ. RATIO
1
2
3
4
X 3
O
X
O
O
X 3.5
X
X
O
O
X 4
O
O
X
O
X
4.5 X O X O
X
5 O X X O
X 5.5
X
X
X
O
X 6
O
O
O
X
X 6.5
X
O
O
X
X
7 O X O X
X 7.5
X
X
O
X
X 8
O
O
X
X
X
8.5 X O X X
X 9
O
X
X
X
X
9.5 X X X X
