Hardware Installation
3-5
CN2
For COM A (Serial port1)
CN3
For COM B (Serial port2)
CN4
For Floppy port
CN1
For LPT port
CN6
For Primary IDE port
CN7
For Secondary IDE port
J3
For Extended USB cable.
t
Power Connector
Pin No.
Function
1
Power Good signal
2,10,11,12
VCC (+5V)
3
+12V
4
-12V
5,6,7,8
GND
9
-5V
3.4. DRAM INSTALLATION
The mainboard can be installed with 4 / 8 / 16 / 32 MB 72 pins SIMM module
DRAM, and the DRAM speed must be 60 or 70 ns. The DRAM memory
system on mainboard consists of bank 0 & bank 1.
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 8 - 128 MB, and various configuration of
DRAM types in the following TABLE are for reference:
BANK0
BANK1
TOTAL SIZE
4MB * 2pcs.
8MB
4MB * 2pcs.
4MB * 2pcs.
16MB
8MB * 2pcs.
16MB
8MB * 2pcs.
4MB * 2pcs.
24MB
8MB * 2pcs.
8MB * 2pcs.
32MB
16MB * 2pcs.
32MB
16MB * 2pcs.
4MB * 2pcs.
40MB
16MB * 2pcs.
8MB * 2pcs.
48MB
16MB * 2pcs.
16MB * 2pcs.
64MB
32MB * 2pcs.
64MB
32MB * 2pcs.
4MB * 2pcs.
72MB
32MB * 2pcs.
8MB * 2pcs.
80MB
32MB * 2pcs.
16MB * 2pcs.
96MB
32MB * 2pcs.
32MB * 2pcs.
128MB
The DRAM installation position refer to Figure 3.1, and notice the Pin 1 of
