GA-586IP
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t
J13: Turbo LED Connector
Pin No.
Function
1
LED cathode (-).
2
LED anode (+).
t
J14: Speaker Connector
Pin No.
Function
1
Data.
2
NC.
3
GND.
4
VCC (+5V).
t
J15: Second Cache Size Selection
Pin No.
Function
1-2
Close for 256 KB cache size.
2-3
Close for 512 KB cache size.
t
J19: System Speed Selection
Pin No.
Function
1-2
Close for 66 MHz system speed. (CPU at 100 MHz)
2-3
Close for 60 MHz system speed. (CPU at 90 MHz)
t
J21: CPU Cooling Fan Power Connector
Pin No.
Function
1
+12V
2
GND
3.4. DRAM INSTALLATION
The mainboard can be installed with 1 / 2 / 4 / 8 / 16 / 32 / 64 / 128 MB 72 pins SIMM module
DRAM, and the DRAM speed must be 70 ns. The DRAM memory system on mainboard
consists of bank 0, 1 & bank 2. The DRAM of any bank can be installed first. Each bank
consist of 2 PCs, 72 pins SIMM module DRAM. Because the 72 pins SIMM module is 32 bits
width, using 2 PCs which can match a 64 bits system. The total memory size is 2 - 512 MB,
and various configuration of DRAM types in the following TABLE are available:
