Epson 2000 - Manual (Page 47)

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.
Jumpersettings
Jumper Jumper
number setting Function
J3 1-2 Enables VGA IRQ
OFF* Disables VGA IRQ
J6 1-2 * Enables COM1
2-3 Disables COM1
J7 1-2* Assigns COM1 serial port as COM1 (3F8H-3FFH)**
2-3 Assigns COM1 serial port as COM3 (3E8H-3EFH)**
J8 1-2 * Enables COM2
2-3 Disables COM2
J9 1-2* Assigns COM2 serial port as COM2 (2F8H-2FFH)**
2-3 Assigns COM2 seriaI port as COM4 (2E8H-2EFH)**
J10 1-2 * Enables parallel port
2-3 Disablesparallel port
J11 1-2* Assigns parallel port as LPT1 (378H-37FH)**
2-3 Assigns parallel port as LPT2 (278H-27FH)**
J12 1-2 Enablesgame port
2-3* Disablesgame port
J13 1-2 * Enables diskette drive controller
2-3 Disables diskette drive controller
J14 1-2 * Enables the IDE hard disk drive controller
2-3 Disablesthe IDE hard disk drive controller
J15 1-4 Selectsexternal battery
2-3 * Selects the system board battery
3-4 Discharges CMOS memory (this resets the SETUP
values to their factory defaults)
3-6 Installing and Removing Options