Changing The Jumper Settings - Epson Pollution Preventer User Manual

Changing the Jumper Settings

The jumpers on the main system board control certain
functions and are preset at the factory to default positions;
however, you can use the information in the following tables to
change their settings, if necessary.
Miscellaneous jumper settings
I c
Jumper
lumber
JA
JB **
JC
JE **
J4
J5
J6
J7
J8
J10
J17 ***
3 - 6 Installing and Removing Options
Jumper
setting Function
1-2 * Enables LPT (parallel port)
2-3 Disables LPT (parallel port)
1-2 * Enables HDC (IDE hard disk drive controller)
2-3 Disables HDC (IDE hard disk drive controller)
1-2* Enables COMA (serial port 1)
2-3 Disables COMA (serial port 1)
1-2 * Enables COMB (serial port 2)
2-3 Disables COMB (serial port 2)
1-2* Enables HDC (IDE hard disk drive controller)
2-3 Disables HDC (IDE hard disk drive controller)
1-2 Enablesgame port (J1)
2-3 * Disables game port (J1)
1-2* Assigns the parallel port as LPT1 (378h-37Fh)
2-3 Assigns the parallel port as LPT2 (278h-27Fh)
1-2* Assigns serial port 1 as COM1 (3F8h-3FFh)
2-3 Assigns serial port 1 as COM3 (3E8h-3EFh)
1-2 * Assigns serial port 2 as COM2 (2F8h-2FFh)
2-3 Assigns serial port 2 as COM4 (2E8h-2EFh)
1-2 * Enablesthe diskette drive controller
2-3 Disables the diskette drive controller
On * Enable VGA interrupt
Off Disable VGA interrupt
1-2 Microprocessor installed runs at 33 MHz or 66 MHz or a
multiple of these (486SX/33, 486DX/33, 486DX2/66, DX4/100,
or Pentium)
3-4 Microprocessor installed is a 486DX/50
1-2,3-4 Microprocessor installed is a DX/40
5-6 Microprocessor installed runs at 25 MHz or 50 MHz or a
multiple of these (486SX/25, 486DX2/50, DX4/75, or SX2/50)