PCRTC IO card Settings and Configuration

Card Type	Clock/calendar card
Chipset	National Semiconductor
Data Bus	8-bit ISA

BASE I/O ADDRESS
Setting	SW1/1	SW1/2	SW1/3	SW1/4
200h	Off	Off	Off	Off
220h	On	Off	Off	Off
240h	Off	On	Off	Off
260h	On	On	Off	Off
280h	Off	Off	On	Off
2A0h	On	Off	On	Off
2C0h	Off	On	On	Off
2E0h	On	On	On	Off
300h	Off	Off	Off	On
320h	On	Off	Off	On
340h	Off	On	Off	On
360h	On	On	Off	On
380h	Off	Off	On	On
3A0h	On	Off	On	On
3C0h	Off	On	On	On
3E0h	On	On	On	On