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<!-- retain these comments for translator revision tracking -->
<!-- original version: 46722 -->
<sect2 arch="powerpc" id="invoking-openfirmware">
<!-- <title>Invoking OpenFirmware</title> -->
<title>OpenFirmware</title>
<para>
<!--
There is normally no need to set up the BIOS (called OpenFirmware) on
&arch-title; systems. PReP and CHRP are equipped with OpenFirmware,
but unfortunately, the means you use to invoke it vary from
manufacturer to manufacturer. You'll have to consult the hardware
documentation which came with your machine.
-->
Normalmente sui sistemi &arch-title; non c'è alcun bisogno di configurare il
BIOS (chiamato OpenFirmware). PReP e CHRP sono dotati di OpenFirmware, ma
sfortunatamente il modo usato per invocarlo varia a seconda del produttore.
Si deve consultare la documentazione dell'hardware fornita con la propria
macchina.
</para><para>
<!--
On &arch-title; Macintoshes, you invoke OpenFirmware with
<keycombo><keycap>Command</keycap> <keycap>option</keycap>
<keycap>O</keycap> <keycap>F</keycap></keycombo> while booting. Generally it
will check for these keystrokes after the chime, but the exact timing
varies from model to model. See
<ulink url="&url-netbsd-powerpc-faq;"></ulink> for more hints.
-->
Sui Macintosh &arch-title;, si entra in OpenFirmware premendo <keycombo>
<keycap>Command</keycap> <keycap>option</keycap> <keycap>O</keycap>
<keycap>F</keycap> </keycombo> durante il boot. In generale il sistema
controllerà la pressione di tali tasti dopo la melodia, ma i tempi
esatti variano da modello a modello. Per suggerimenti consultate
<ulink url="&url-netbsd-powerpc-faq;"></ulink>
</para><para>
<!--
The OpenFirmware prompt looks like this:
-->
Il prompt di OpenFirmware somiglia a:
<informalexample><screen>
ok
0 >
</screen></informalexample>
<!--
Note that on older model &arch-title; Macs, the default and sometimes
hardwired I/O for OpenFirmware user interaction is through the serial
(modem) port. If you invoke OpenFirmware on one of these machines, you
will just see a black screen. In that case, a terminal program running
on another computer, connected to the modem port, is needed to
interact with OpenFirmware.
-->
Sui Mac &arch-title; più vecchi, per l'utente interagisce con OpenFirmware
attraverso la porta seriale (modem). In alcuni casi non è nemmeno possibile
fare altrimenti: invocando OpenFirmware su una di queste macchine, si vede
solo uno schermo nero. In tal caso per interagire con OpenFirmware si deve
connettersi attraverso la porta seriale da un altro elaboratore su cui è
attivo un emulatore di terminale.
</para><para>
<!--
The OpenFirmware on OldWorld Beige G3 machines, OF versions 2.0f1
and 2.4, is broken. These machines will most likely not be able to
boot from the hard drive unless the firmware is patched. A firmware
patch is included in the <application>System Disk 2.3.1</application>
utility, available from Apple at
<ulink url="ftp://ftp.apple.com/developer/macosxserver/utilities/SystemDisk2.3.1.smi.bin"></ulink>.
After unpacking the utility in MacOS, and launching it, select the
<guibutton>Save</guibutton> button to have the firmware patches
installed to nvram.
-->
Sulle macchine OldWorld Beige G3, OpenFirmware (OF versioni 2.0f1 e 2.4)
è difettoso. Tali macchine molto probabilmente non saranno in grado di
fare il boot dal disco fisso, a meno che al firmware non venga applicata
una patch opportuna, come quella compresa nell'utility <application>System
Disk 2.3.1</application> scaricabile da Apple come
<ulink url="ftp://ftp.apple.com/developer/macosxserver/utilities/SystemDisk2.3.1.smi.bin"></ulink>.
Scompattate l'utility in MacOS, avviarla e azionare il pulsante
<guibutton>Save</guibutton> affinché le patch del firmware vengano
installate nella nvram.
</para>
</sect2>
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