PPC512/640 DIP switches
The PPC series computers have 6 DIP switches, but only 5 are used. With the PPC open and flat, the switches are down for on, up for off.
SW1: Internal/External display
This switch should be turned off to use an external monitor, on for the built-in LCD.
SW2: Video hardware emulation
If this switch is on the built-in video adaptor emulates a CGA. If it is off, MDA.
SW3: Disable internal video adaptor
Turn this switch off to disable the built-in video adaptor and use an add-on display card. This would require a third-party docking bay, since a standard PPC has nowhere to plug the card in.
SW4,5: Initial Video Mode
|Off||Off||Add-on EGA or VGA|
|Off||On||Built-in CGA, 40 columns|
|On||Off||Built-in CGA, 80 columns|
|On||On||Built-in MDA, 80 columns|