Switches 1/4, 1/5, 1/6 and 1/7: interrupt level

Interrupt	Switch 1/4	Switch 1/5	Switch 1/6	Switch 1/7
IRQ 2	OFF	OFF	OFF	ON
IRQ 3 (default)	OFF	OFF	ON	OFF
IRQ 5	OFF	ON	OFF	OFF
IRQ 7	ON	OFF	OFF	OFF

• Select an interrupt level that does not conflict with any other boards or devices that are installed in your computer.

• Some applications, such as the IBM 3270 Emulation Program, do not work with all interrupt levels.

• Several interrupt levels are used for particular purposes and this may also affect your choice. Click here for examples.