Cpu Clk Speed: Jp1, Jp2, Jp7, Jp8; Cpu Is Hclk X1 Or X2: Jp3, Jp12; Com2 Signal/+12V/+5V Selection: Jp5; Com1 Signal/+12V/+5V Selection: Jp6 - AXIOMTEK SBC82400 User Manual

SBC82400 ISA Half-Size CPU Board Series User's Manual

2.3.1 CPU CLK SPEED: JP1, JP2, JP7, JP8

Options
CPU BUS CLK JP1 JP2 JP7 JP8
50 MHz (1-2) (2-3) (2-3) (2-3)
60 MHz (2-3) (1-2) (2-3) (2-3)
66 MHz (1-2) (1-2) (2-3) (2-3)
90 MHz (1-2) (1-2) (2-3) (1-2)
100 MHz (1-2) (2-3) (1-2) (1-2)

2.3.2 CPU is HCLK X1 or X2: JP3, JP12

Options
X1 JP3 (2-3)
X2 JP3 (2-3)

2.3.3 COM2 Signal/+12V/+5V Selection: JP5

Options
Pin 1=+5V
Short 1-3
Pin 1=+12V Short 3-5
Pin 1=DCD Short 7-9 (default)
Pin 8=+5V
Short 2-4
Pin 8=+12V
Short 4-6
Pin 8=RI Short 8-10 (default)

2.3.4 COM1 Signal/+12V/+5V Selection: JP6

Options
Pin 1=+5V Short 1-3
Pin 1=+12V Short 3-5
Pin 1=DCD
Short 7-9 (default)
Pin 8=+5V Short 2-4
Pin 8=+12V Short 4-6
Pin 8=RI
Short 8-10 (default)
Jumpers and Connectors
Setting
JP1, JP2, JP7, JP8
Setting
JP12 (2-3)
JP12 (1-2)
Setting
2
1
Setting
2
1
3
2
1
JP3, JP12
3
2
1
JP5
4 6 8 10
3 5 7 9
JP6
4 6 8 10
3 5 7 9
9