PC 140/340 Pentium® 100/133/166 MHz (6260, 6560) System Board Locations

PC 340 System Board


See > System Address Maps

1 Power Supply Connector (J3)
Power Connector (Voltages)

2 Flash Jumper (JP11)
3 FDD write Protect (JP21)
4 PS/2 Mouse Enable/Disable (JP4)
5 Diskette Drive Conn. (J5)
6 HDD Detect (JP23)
7 Primary IDE Hard Disk Drive Conn. (J8)
8 Secondary IDE Hard Disk Drive Conn. (J7)
9 Battery

10 Power-On Password/CMOS mode (J9)
(1-2 = Normal Operation 2-3 = CMOS Clear)

11 CACHE Memory Connectors
12 Burst Mode (JP22)
13 CPU Voltage (JP19)
14 Processor Socket
15a Hard Disk Drive LED Connector (J12)
15b Power LED Connector (J12)
16 CPU Fan Connector (J13)
17 CPU Clock (JP17)

18 Memory Module Connector 1 - Bank1
19 Memory Module Connector 2 - Bank1
20 Memory Module Connector 3 - Bank0
21 Memory Module Connector 4 - Bank0

22 Tag RAM Socket
23 Feature Connector (J6)
24 Cache Memory Size (JP13)
25 CPU Bus Clock (JP14)
26 On-Board VGA (JP3)
27 Display Connector (P4)
28 Parallel Connector (P1)
29 Video Memory Sockets
30 Serial Connector COM2 (P2)
31 PCI/ISA Riser Connector
32 Serial Connector COM1 (P3)
33 Mouse Connector (J2)
34 Keyboard Connector (J1)

Processor Type Selection Jumper (JP14 JP17)

Processor JP14 JP17
P75 MHz 6260 1-2 open
P90 MHz 6260/6560 3-4 open
P100 MHz 6260/6560 1-2, 3-4 open
P120 MHz 6560 3-4 1-2
P133 MHz 6560 1-2, 3-4 1-2
P166 MHz 6560 1-2, 3-4 1-2, 3-4


Cache Size Selection Jumper (JP13)

Size JP13
256 KB (D)
or no Cache
1-2
512 KB 2-3


Miscellaneous Jumpers (JP3 JP4 J9 JP11 JP19 JP21 JP22 JP23)

Jumper Setting Description
JP3 Short
Open
Enable on-board VGA (D)
Disable on-board VGA
JP4 Short
Open
Enable PS/2 mouse (D)
Disable PS/2 mouse
J9 1-2
2-3
Normal (D)
CMOS Data Clear (all setup data
reset to default and
Power-On-Password cleared)
JP11 1-2
2-3
Enable Flash (D)
Flash Lock
JP19 1-2
2-3
STD 3.3 volt
VRE 3.52 volt (D)
JP21 1-2
2-3
FDD protect, Normal (D)
FDD Write protect
JP22 1-2
2-3
Non-Linear burst (D)
Linear burst
JP23 1-2
2-3
HDD non-detect
HDD detect (D)


You can install a maximum of four single inline memory modules (SIMMs) in the computer. The system supports a minimum of 8 MB and a maximum of 128 MB of memory. Use only tin lead, 72-pin, 60ns Industry Standard EDO, non-parity SIMMs.

Memory modules are installed in two memory banks, Bank 0 and Bank 1. Each bank supports 4, 8, 16 or 32 MB single or double-density SIMMs. Each bank used, must contain a pair of SIMMs of the same size and density. For best performance, fill Bank 0 first.

The following table shows some possible SIMM combinations and the total memory size for each combination.
See also Memory Matrix

Bank 0
SIMM 1
Bank 0
SIMM 2
Bank 1
SIMM 3
Bank 1
SIMM 4
Total
4 MB
(single)
4 MB
(single)
- - 8 MB
4 MB
(single)
4 MB
(single)
4 MB
(single)
4 MB
(single)
16 MB
8 MB
(double)
8 MB
(double)
- - 16 MB
8 MB
(double)
8 MB
(double)
8 MB
(double)
8 MB
(double)
32 MB
16 MB
(single)
16 MB
(single)
- - 32 MB
8 MB
(double)
8 MB
(double)
16 MB
(single)
16 MB
(single)
48 MB
16 MB
(single)
16 MB
(single)
16 MB
(single)
16 MB
(single)
64 MB
32 MB
(double)
32 MB
(double)
- - 64 MB
32 MB
(double)
32 MB
(double)
4 MB
(single)
4 MB
(single)
72 MB
32 MB
(double)
32 MB
(double)
8 MB
(double)
8 MB
(double)
80 MB
32 MB
(double)
32 MB
(double)
16 MB
(single)
16 MB
(single)
96 MB
32 MB
(double)
32 MB
(double)
32 MB
(double)
32 MB
(double)
128 MB


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