[BACK]Return to macppc.html CVS log [TXT][DIR] Up to [local] / www
File: [local] / www / macppc.html (download) (as text)

Revision 1.73, Fri Oct 15 23:31:31 2004 UTC (19 years, 7 months ago) by jsg
Branch: MAIN
Changes since 1.72: +3 -1 lines 

sync with bktr(4), ok mickey@

<!DOCTYPE HTML PUBLIC  "-//W3C//DTD HTML 4.01 Transitional//EN"
	"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>OpenBSD/macppc</title>
<link rev="made" href="mailto:www@openbsd.org">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="resource-type" content="document">
<meta name="description" content="the OpenBSD/macppc page">
<meta name="keywords" content="openbsd,macppc,ppc,powerpc,mac,macintosh,apple">
<meta name="distribution" content="global">
<meta name="copyright" content="This document copyright 1996-2004 by OpenBSD.">
</head>

<body bgcolor="#ffffff" text="#000000" link="#23238e">
<a href="index.html"><img alt="[OpenBSD]" height="30" width="141" src="images/smalltitle.gif" border="0"></a>
<h2><font color="#e00000">OpenBSD/macppc</font></h2>

<hr>

<p>
OpenBSD/macppc runs on the PowerPC-based Macintosh systems from the
<i>``New World''</i> family, i.e. all Apple computers from the iMac to current
models. It does not run any <a href="#unsup">unsupported models</a>.

<p>
A mailing list dedicated to the OpenBSD/macppc port is available at
<u><font color="#23238e">ppc@openbsd.org</font></u>.
To join the OpenBSD/macppc mailing list, send a message body of <b>"subscribe
ppc"</b> to
<a href="mailto:majordomo@openbsd.org">majordomo@openbsd.org</a>.
Please be sure to check our <a href="mail.html">mailing list policy</a> before
subscribing.

<p>
The current port maintainer is Dale Rahn
(<a href="mailto:drahn@openbsd.org">drahn@openbsd.org</a>).
Others are definitely welcome to contribute!

<a href="#toc"></a>
<h3><font color="#0000e0"><i>Table of contents</i></font></h3>
<ul>
  <li><a href="#history">History of the port</a>
  <li><a href="#status">Current status</a>
  <li><a href="#projects">Project list</a>
  <li><a href="#hardware">Supported hardware</a>
  <li><a href="#install">Getting and installing OpenBSD/macppc</a>
  <li><a href="#multiboot">Multiboot/Shared HFS disks</a>
  <li><a href="#root">Boot device considerations</a>
  <li><a href="#problems">Known problems</a>
  <li><a href="#other">Other features</a>
</ul>

<hr>
<a name="history"></a>
<h3><font color="#0000e0"><strong>History:</strong></font></h3>

<p>
The OpenBSD/macppc port started as OpenBSD/powerpc, and was initially
focused on Motorola computers with Open Firmware, and VI Power4e boards.
This port was eventually thrown away after OpenBSD 2.5 was released.
As a result there was no OpenBSD/powerpc port for the 2.6 and 2.7 releases.
In the meantime, a new port was started, focusing on Apple hardware, and
based on code from NetBSD/macppc, and after a lot of work from Dale Rahn,
OpenBSD 2.8 was released with a powerpc port.
As work on the port continued, it was renamed to OpenBSD/macppc for 3.0.

<hr>
<a name="status"></a>
<h3><font color="#0000e0"><strong>Current status:</strong></font></h3>

<p>
Currently, all the hardware listed in the
<a href="#hardware">supported hardware</a> section below boots
multi-user, supports most, if not all, of the on-board devices, and is
generally usable.
<p>
SMP work in progress, waiting on hardware.
<p>
<a name="X11"></a>
<p>
XFree86 is supported on all MacPPC systems, however
only the ATI graphics adapters are supported by an <i>accelerated</i> 
X server at the current time.
The nVidia accelerated X server does not currently work, however nVidia
(and ATI) cards can be used by X in frame buffer (unaccelerated) mode, 
at the boot resolution and color depth using the wsfb driver (installed by 
default).

<p>
Directions on enabling the accelerated X server can be found
in the <tt>/usr/X11R6/README</tt> file on the installed system.

<hr>
<a name="projects"></a>
<h3><font color="#0000e0"><strong>Projects (in no particular order):
</strong></font></h3>

<ul>
  <li>SMP
  <li>Work on unsupported on-board devices
  <li>Fix known problems
  <li>Improve port-specific documentation
  <li>Test more platforms and peripherals, especially PCI drivers
</ul>

<hr>
<a name="hardware"></a>
<h3><font color="#0000e0"><strong>Supported hardware:</strong></font></h3>

<h4>Supported models</h4>

<p>
PowerPC-based Macintosh systems are divided into <i>"Old World"</i> and
<i>"New World"</i> systems, the difference being
<a href="http://developer.apple.com/technotes/tn/tn1167.html">the design
of the system ROM</a>.
Only <i>"New World"</i> machines are currently supported. 
Known compatible systems include the following:

<ul>
<li>PowerMac G3 (B&amp;W)
<li><a href="http://docs.info.apple.com/article.html?artnum=58418">PowerMac G4
</a> (PCI Graphics? - untested but should work)
<li>PowerMac G4 (AGP Graphics)
<li>PowerMac G4 (Digital Audio)
<li>PowerMac G4 (QuickSilver)
<li>PowerMac G4 (QuickSilver 2002)
<li>PowerMac G4 (Mirror Door Drive)
<li>PowerMac G4 (FW 800) 
<li>PowerMac Dual G4
<li>PowerMac G4 Cube
<li>iMac Rev A
<li>iMac Rev B
<li>iMac Rev C
<li>iMac DV
<li>iMac DV+
<li>LCD iMac
<li>PowerBook G3 (FireWire)
<li>PowerBook G4
<li>PowerBook G4 12", 15" and 17"
<li>iBook
<li>iBook2 
<li>iBook G4
<li>Xserve <i>(currently only running on serial console with video card removed)</i>
<li>StarMax <i>(development in progress)</i>
<li>others... <i>(development in progress)</i>
</ul>
To help us improve the accuracy of this list, <b>PLEASE</b> 
<a href="faq/faq4.html#SendDmesg">send your dmesg</a> after installation
to <a href="mailto:dmesg@openbsd.org">dmesg@openbsd.org</a>.

<h4>Supported peripherals</h4>

<ul>
<li><strong>Onboard I/O modules</strong>
(<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=macobio&amp;arch=macppc&amp;sektion=4&">macobio</a>)
<ul>
<li>Apple Paddington
<li>Apple Keylargo
</ul>

<li><strong>PCI-Bridges</strong> 
(<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=pchb&amp;arch=macppc&amp;sektion=4">pchb</a>)
<ul>
<li>Apple Uni-North
<li>Apple Uni-North AGP
<li>Apple Uni-North Eth
<li>Motorola MPC106 Host-PCI
</ul>

<li><strong>Video Cards</strong>
<ul>
<li>ATI Mach64 GP
<li>ATI Mach64 GV
<li>ATI Mach64 128 PK
<li>ATI Mach64 128 VR AGP
<li>ATI Rage 128 Mobility M3
<li>ATI Rage Fury AGP4x
<li>ATI Radeon Mobility M7
<li>ATI Radeon Mobility 9200 (M9+)
<li>Nvidia GeForce4 440 Go 64M
</ul>

<li><strong>Ethernet Adapters</strong>
<ul>
<li>DEC DECchip 21040 (Tulip) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=de&amp;arch=macppc&amp;sektion=4">de</a>)
<li>DEC DECchip 21143 (Tulip clones) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=dc&amp;arch=macppc&amp;sektion=4">dc</a>)
<li>Intel i8255x-based (except the i82556) PCI adapters (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=fxp&amp;arch=macppc&amp;sektion=4">fxp</a>), including:
    <ul>
    <li>Intel EtherExpress PRO/10+
    <li>Intel EtherExpress PRO/100, PRO/100B, and PRO/100+
    <li>Intel EtherExpress PRO/100+ "Management Adapter"
    <li>Intel EtherExpress PRO/100 Dual Port
    <li>Intel PRO/100 VE, PRO/100 VM, and PRO/100 S
    </ul>
<li>Intel 21145-based PCI adapters (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=dc&amp;arch=macppc&amp;sektion=4">dc</a>)
<li>Apple iMac Rev. A-C Ethernet (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=bm&amp;arch=macppc&amp;sektion=4&amp;arch=powerpc">bm</a>)
<li>Apple GMAC (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=gem&amp;arch=macppc&amp;sektion=4">gem</a>)
<li>Alteon Tigon I/II-based adapters (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ti&amp;arch=macppc&amp;sektion=4">ti</a>), including:
    <ul>
    <li>3Com 3c985 and 3c985B
    <li>Alteon ACEnic V (fiber and copper)
    <li>Digital EtherWORKS 1000SX
    <li>Farallon PN9000SX
    <li>Netgear GA620 and GA620T
    <li>SGI Tigon
    </ul>

<li>Intel i82540, i82541, i82542, i82543, i82544, i82545, is82546 and i82547 based adapters
(<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=em&amp;arch=macppc&amp;sektion=4">em</a>),
including:
    <ul>
    <li> Intel PRO/1000 Gigabit Server Adapter (SX Fiber) (PWLA8490)
    <li> Intel PRO/1000F Gigabit Server Adapter (SX Fiber) (PWLA8490SX)
    <li> Intel PRO/1000T Server Adapter (PWLA8490T)
    <li> Intel PRO/1000XT Server Adapter (PWLA8490XT)
    <li> Intel PRO/1000XS Server Adapter (SX Fiber) (PWLA8490XF)
    <li> Intel PRO/1000T Desktop Adapter (PWLA8390T)
    <li> Intel PRO/1000XTL Lo Profile PCI Server (PWLA8490XTL)
    <li> Intel PRO/1000MT Desktop Adapter (PWLA8390MT)
    <li> Intel PRO/1000MT Server Adapter (PWLA8490MT)
    <li> Intel PRO/1000MT Dual Port Server Adapter (PWLA8492MT)
    <li> Intel PRO/1000MF Server Adapter (SX Fiber) (PWLA8490MF)
    <li> Intel PRO/1000MF Dual Port Server Adapter (SX Fiber) (PWLA8492MF)
    <li> Intel PRO/1000MF Server Adapter (LX Fiber) (PWLA8490LX)
    <li> Intel PRO/1000MT Quad PCI-X Adapter (PWLA8494MT)
    </ul>

<li>Realtek 8169/8169S/8110S based PCI adapters (<a href="http://www.openbsd.org
/cgi-bin/man.cgi?query=re&amp;arch=macppc&amp;sektion=4">re</a>), including:
<font color="#0000e0">*</font>
    <ul>
    <li>Buffalo LGY-PCI-GT (8169S)
    <li>Gigabyte 7N400 Pro2 Integrated Gigabit Ethernet (8110S)
    <li>PLANEX COMMUNICATIONS Inc. GN-1200TC (8169S)
    <li>Xterasys XN-152 10/100/1000 NIC (8169)
    </ul>
</ul>
 
<li><strong>Wireless Ethernet Adapters</strong>
<ul>
<li>Aironet 802.11DS PCI and PCMCIA (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=an&amp;arch=macppc&amp;sektion=4">an</a>)
<li>WaveLAN 802.11DS onboard Airport slot, PCI, and PCMCIA (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=wi&amp;arch=macppc&amp;sektion=4">wi</a>)
<li>Prism II and Prism 2.5 PCI and PCMCIA (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=wi&amp;arch=macppc&amp;sektion=4">wi</a>). See <a href="i386.html">i386</a> for a complete list.
</ul>

<li><strong>SCSI and IDE Host Adapters</strong>
<ul>
  <li> Adaptec AIC-7770, AIC-7850, AIC-7860, AIC-7870, AIC-7880, AIC-7890,
    AIC-7891, AIC-7892, AIC-7895, AIC-7896, AIC-7897 and AIC-7899 based host
    adapters
    (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ahc&amp;sektion=4"
    >ahc</a>)
    including the Adaptec cards
    <ul>
      <li>AHA-274X[W,T]
      <li>AHA-284X
      <li>AHA-2910, AHA-2915
      <li>AHA-2920
      <li>AHA-2930[C,U2]
      <li>AHA-2940[J,N,U,AU,UW,UW Dual,UW Pro,U2W,U2B]
      <li>AHA-2950[U2W,U2B]
      <li>AHA-3940[U,AU,UW,AUW,U2W]
      <li>AHA-3950U2
      <li>AHA-3960
      <li>AHA-3985
      <li>AHA-4944UW
      <li>AHA-19160B
      <li>AHA-29160[B,N]
      <li>AHA-39160
    </ul>
<li>Symbios Logic 53c810, 53c825 (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=siop&amp;arch=macppc&amp;sektion=4">siop</a>)
<li>All PCI IDE 
(<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=pciide&amp;arch=macppc&amp;sektion=4">pciide</a>) 
adapters supported by the <a href="i386.html">i386</a> platform
</ul>

<li><strong>RAID Controllers</strong>
<ul>
<li>Adaptec SCSI RAID (<a href="http://www.intelligent-io.com/">I2O</a>) controllers (ASR-2100S, ASR-3200S, etc.) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=iop&amp;arch=macppc&amp;sektion=4">iop</a>)
</ul>

<li><strong>Drives</strong>
<ul>
<li>All IDE devices supported on the <a href="i386.html">i386</a>.
<li>All ATAPI drives supported on the <a href="i386.html">i386</a>.
<li>All SCSI drives supported on the <a href="i386.html">i386</a>.
</ul>

<li><strong>USB Controllers/Hubs</strong>
<ul>
<li>Apple USB (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ohci&amp;arch=macppc&amp;sektion=4">ohci</a>)
<li>OHCI root hub (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ohci&amp;arch=macppc&amp;sektion=4">ohci</a>)
<li>Opti RM861HA (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ohci&amp;arch=macppc&amp;sektion=4">ohci</a>)
<li>Alps Electric Hub in Apple USB Keyboard
</ul>
 
<li><strong>USB Devices</strong>
<ul>
<li>Alps Electric Apple USB Keyboard (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ukbd&amp;arch=macppc&amp;sektion=4">ukbd</a>)
<li>Solid Year Keyboard and Mouse (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ukbd&amp;arch=macppc&amp;sektion=4">ukbd</a>) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ums&amp;arch=macppc&amp;sektion=4">ums</a>)
<li>Logitech M4848 (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ums&amp;arch=macppc&amp;sektion=4">ums</a>)
<li>Kensington USB/PS2 Wheel Mouse (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ums&amp;arch=macppc&amp;sektion=4">ums</a>)
<li>USB Zip Drives (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=umass&amp;arch=macppc&amp;sektion=4">umass</a>)
</ul> 

<li><strong>CardBus/PCMCIA bridges</strong>
<ul>
<li>PBG4 onboard CardBus bridge is now supported, as are PCI CardBus bridges. 
(<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=cbb&amp;sektion=4">cbb</a>)
<li>Orinoco/Prism cards are only current supported cards
(<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=wi&amp;sektion=4">wi</a>)
</ul>
<li><strong>Cryptography Accelerators</strong>
<ul>
<li>Broadcom uBsec BCM5801, BCM5802, BCM5805, BCM5820, BCM5821, BCM5822, BCM5823 (and the legacy Bluesteelnet 5501 and 5601 parts) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ubsec&amp;arch=macppc&amp;sektion=4">ubsec</a>)
<li>Hifn 6500-based boards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=lofn&amp;arch=macppc&amp;sektion=4">lofn</a>)
<li>Hifn 7751/7811/7951/7955/7956-based boards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=hifn&amp;arch=macppc&amp;sektion=4">hifn</a>), including:
    <ul>
    <li>Soekris Engineering vpn1201, vpn1211, vpn1401, and vpn1411
    <li>GTGI PowerCrypt Encryption Accelerator
    <li>NetSec 7751
    <li>Hifn 7751 and 9751 reference boards
    <li>Invertex AEON
    </ul>
<li>SafeNet SafeXcel 1141/1741 (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=safe&amp;arch=macppc&amp;sektion=4">safe</a>)
</ul>

<li><strong>Audio Devices</strong>
<ul>
<li>AWACS (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=awacs&amp;arch=macppc&amp;sektion=4&">awacs</a>)
<li>Ensoniq AudioPCI (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=eap&amp;arch=macppc&amp;sektion=4">eap</a>)
<li>Snapper audio found on recent iBook (since May 02) and PowerBook (since Apr 02) models (need to verify iMac (Jan 02) and Power Mac G4 (Sep 02)) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=snapper&amp;arch=macppc&amp;sektion=4&">snapper</a>) 
<li>USB audio (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=uaudio&amp;arch=macppc&amp;sektion=4">uaudio</a>)
</ul>

<li><strong>Radio Receiver Devices</strong> (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=radio&amp;arch=macppc&amp;sektion=9">radio</a>)
<ul>
<li>Brooktree 848/849/878/879-based TV tuner cards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=bktr&amp;arch=macppc&amp;sektion=4">bktr</a>)
</ul>

<li><strong>Other Devices</strong>
<ul>
<li>Serial Ports: While the modern PowerMacintosh series has no external 
  standard serial ports, many have an on-board modem which can be 
  removed and replaced with an adapter (several manufacturers of these exist)
  which will produce a standard (and supported) serial port.
<li>Firewire device now probes and is configured, but no devices will attach
  on the firewire bus, yet.
<li>Backlight on lcd devices can be controlled through the brightness control
keys on ADB (laptop) keyboards, or through'wsconsctl -w display.brightness=xx'
(0 - 100) and 'wsconsctl -w display.backlight=xx' (0 or 100)
<li>Brooktree 848/849/878/879-based video capture cards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=bktr&amp;arch=macppc&amp;sektion=4">bktr</a>), including:
  <ul>
  <li>Animation Technologies FlyVideo
  <li>AOpen VA1000
  <li>Askey/Dynalink Magic TView
  <li>ATI TV-Wonder and Wonder/VE
  <li>AverMedia cards
  <li>Hauppauge Wincast TV and WinTV/PCI
  <li>IMS TV Turbo
  <li>Intel Smart Video Recorder III
  <li>I/O DATA GV-BCTV2/PCI
  <li>I/O DATA GV-BCTV3/PCI
  <li>KISS TV/FM PCI
  <li>Leadtek Winfast TV 2000
  <li>Miro PC TV
  <li>MMAC Osprey
  <li>NEC PK-UG-X017
  <li>STB TV PCI Television Tuner
  <li>Terratec TerraTVplus
  <li>Video Highway XTreme
  <li>VideoLogic Captivator PCI
  <li>Zoltrix TV
  </ul>
</ul>
</ul>
<font color="#0000e0">*</font> Support added after 3.5.

<a name="unsup"></a>
<h4>Unsupported Hardware</h4>

<ul>
<li>Any older Mac with a 4-digit part number (6100, 7300, 7500,
  8500, 9500).
<li>Older Apple PowerMac systems with a 601 processor or lacking
  Open Firmware are not supported. 
<li>Older Open Firmware machines are not currently supported.
  This is mostly due to lack of developer resources and limited 
  availability of hardware.
<li>Built-in modems on most machines are not supported.  In many systems,
  the serial port the modem is attached to is supported, but the modem 
  itself is not supported. 
<li>Newer PowerBooks have an internal modem attached as a USB device, these
  are not supported.
<li>The tumbler 'digital audio' subsystem on older iBooks is not supported. 
<li>Sleep/Suspend on laptops is not supported.
<li>Airport Extreme is not supported, no available docs.
<li>Bluetooth is not supported.
<li>Multi-speed laptops are not adjustable.
</ul>

<hr>
<a name="install"></a>
<h3><font color="#0000e0">
<strong>Getting and installing OpenBSD/macppc:</strong>
</font></h3>

<p>
The latest supported OpenBSD/macppc release is
<a href="35.html">OpenBSD 3.5</a>.
Here are the
<a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/3.5/macppc/INSTALL.macppc">
OpenBSD/macppc 3.5 installation instructions
</a>.

<p>
Snapshots are made available from time to time, in
<a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/snapshots/macppc">this location</a>
as well as in a few
<a href="ftp.html">mirrors</a>.
Here are the
<a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/snapshots/macppc/INSTALL.macppc">
OpenBSD/macppc snapshot installation instructions
</a> as well.

<p>
There are several installation media provided:

<ul>
  <li><strong>CD boot</strong>
  <p>
  With the OpenBSD CD inserted in the cdrom drive, powering the machine on
  while leaving the ``C'' key pressed will bootstrap the installation
  procedure.
  Alternatively, the CD can be booted at the Open Firmware prompt, with
<pre>
  boot cd:,ofwboot 3.5/macppc/bsd.rd
</pre>
  <li><strong>Mac OS based boot</strong>
  <p>
  If the system disk is shared with Mac OS, the <tt>ofwboot</tt> boot loader
  and the <tt>bsd.rd</tt> installation media can be copied to the first HFS
  or HFS+ partition.
  Then the installation procedure can be booted at the Open Firmware prompt,
  with
<pre>
  boot hd:,ofwboot bsd.rd
</pre>
</ul>

<a name="multiboot"></a>
<h3><font color="#0000e0">Multiboot/Shared HFS disks:</font></h3>
<p>
Having OpenBSD multiboot, or share, a disk with Mac OS X/Mac OS 9 
is possible as long as the disk is first partitioned with the 
Mac OS utility, <i>Drive Setup</i> (Mac OS 9) or <i>System Disk 
Utility</i> (Mac OS X).
Unallocated space, or a partition not in use, must be left for OpenBSD's use. 
Since OpenBSD is only able to boot from HFS (not Mac OS X UFS) filesystem,
the first partition must formated as HFS or HFS+, not UFS, to be able to boot
OpenBSD.

<p>
Please refer to the installation instructions for more details on how to
install a shared disk.
Standalone (no Mac OS present) installation is also supported.

<a name="root"></a>
<h3><font color="#0000e0">Boot device considerations:</font></h3>
<p>
Modern MacPPC systems have two IDE interfaces (called Ultra and IDE), each of 
which can have two devices on them (ultra0, ultra1, ide0, ide1).
When multiple drives are present in the system, there are limitations
of which drives can be configured as the OpenBSD root drive. 
Invalid configurations will not be able to properly
detect which drive is the root drive, so any attempt will either
prompt for a root drive or fail.

<ul>
<li><tt>ultra0</tt> is always a valid root drive.
<li><tt>ultra1</tt> is valid as a root disk, as long as <tt>ultra0</tt> 
  is a hard drive, not a non-hard disk ATAPI device).
<li><tt>ide1</tt> (Zip drive bay) is valid as a root disk if no hard drive is 
  located at <tt>ultra1</tt>, 
<li><tt>ide0</tt> (cdrom) is valid as a root drive <b>only</b> if no hard
  drives are connected to the Ultra bus.
</ul>

<hr>
<a name="problems"></a>
<h3><font color="#0000e0">Known Problems</font></h3>

<ul>
<li>Laptop systems may power off within 2-5 minutes if the lid is closed 
  while running from battery.
<li>Older iMacs can have a problem with the USB keyboard driver where 
  the first key pressed after boot will repeat endlessly.  The workaround 
  is to press &lt;SHIFT&gt; first or to disconnect and reconnect the USB mouse 
  after the problem has occurred.
</ul>

<hr>
<a name="other"></a>
<h3><font color="#0000e0">Other Features</font></h3>

<ul>
<li> &lt;CTRL&gt;&lt;CMD&gt;&lt;POWER&gt; on ADB (not USB) keyboards 
will reset the computer.
</ul>

<hr>
<a href="plat.html">
<img height="24" width="24" src="back.gif" border="0" alt="Supported platforms">
</a> 
<br>
<small><a href="mailto:www@openbsd.org">www@openbsd.org</a></small>
<br>
<small>$OpenBSD: macppc.html,v 1.73 2004/10/15 23:31:31 jsg Exp $</small>

</body>
</html>