BX2000
3-6
H+H
−
: IDE Hard Disk Active LED
PIN 1: LED anode (+)
PIN 2: LED cathode (
−
)
GN: Green Function Switch
Open : Normal operation
Short : Entering Green Mode
G
−
G+: Green LED
PIN 1 : LED anode (+)
PIN 2 : LED cathode (
−
)
3.4. DRAM INSTALLATION
The main board can be installed with 8 / 16 / 32 / 64 / 128 / 256 MB 168
pins DIMM module DRAM, and the DRAM speed must be 67~100 MHz for
SDRAM when system bus speed is set to 66MHz. When system bus speed
is set to 100MHz, 100MHz SDRAM is required. The DRAM memory system
on main board consists of bank 0, 1, 2 & bank 3.
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 8 MB ~1GB
SDRAM. 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 speed can be set to 66 / 100MHz form the DIP SWITCH
(
SW
). The user can change the DIP SWITCH selection to set up the CPU
speed for different processors.
1
1
