Motorola MVME1603, Installation And Use Manual, Page: 23 / 222

Hardware Preparation and Installation
1-9
1
Console Port Configuration
On the MVME1600-001 base board, either the standard serial console port
(
COM1
) or the on-board video (VGA) port can serve as the PPCBug
firmware console port.
The firmware checks for the presence of a connected keyboard and a
connected mouse. If either device is connected to the PowerPC system and
a firmware-supported video card/video device is found, the firmware is
automatically brought up on the connected video terminal. If neither a
mouse nor keyboard is connected, the firmware is brought up on the serial
port (
COM1
). It is also brought up on the serial port (
COM1
) if no video
terminal is found.
The following table shows how the display device is determined:
Notes If the mouse is connected but the keyboard is not, and the
supported VGA device exists, the firmware is displayed on
the video terminal. Because a keyboard is necessary for
interactive use on a video terminal, however, the firmware
will display a “Keyboard not connected” message. In order to
use the firmware, you must then plug the keyboard in.
Conversely, if you remove the VGA monitor, also remove
the keyboard and mouse to avoid unexpected behavior by the
firmware.
Mouse Con-
nected
Keyboard
Connected
On-Board VGA
Device Present
Firmware
Displayed on
Yes Yes Yes VGA terminal
Yes No Yes VGA terminal
No Yes Yes VGA terminal
No No Yes Serial port (
COM1
)
No No No Serial port (
COM1
)
No Yes No Serial port (
COM1
)