Technical data

EDO Memory Configuration
PowerPC Open Firmware Quick Start Guide 5
Your PowerPC Open Firmware has been conÞgured to
automatically initialize your system, detect your console (VGA or
serial), run system selftests, and autoboot your operating system.
PowerPC Open Firmware Console Detection
Typically, the console is either the combination of a
text/graphics display device (VGA type terminal) and a
keyboard or an ASCII terminal connected to a serial port.
This table shows how PowerPC Open Firmware determines
whether it should be displayed on the VGA terminal or the
serial port during the power-up/reset sequence.
The PCI video cards in the Òplug-inÓ slots are checked Þrst, and
then a check is made for an Òon-boardÓ video device. The slots
are checked from top to bottom.
If Then
Your operating system has
already been installed on
your PowerPC system
The PowerPC Open Firmware automatically
detects the installed operating system and
autoboots it.
The operating system has
not been installed on your
PowerPC system
Refer to the installation instructions that came
with your operating system. You may be
instructed to interrupt the PowerPC Open
Firmware startup sequence so you can install the
operating system. This step would require you to
make a keystroke prior to the autoboot step that
occurs in the startup sequence.
KBD
Connected
Firmware Supported VGA
Device/Card Exists
Firmware is
Displayed On
yes yes VGA terminal
no yes Serial (COM1)
no no Serial (COM1)
yes no Serial (COM1)