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1.2       brad        5: <title>OpenBSD/macppc</title>
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                     14:
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1.18      jsyn       16: <a href="index.html"><img alt="[OpenBSD]" height="30" width="141" src="images/smalltitle.gif" border="0"></a>
1.1       brad       17: <p>
1.33      miod       18: <h2><font color="#e00000">OpenBSD/macppc</font></h2>
                     19:
                     20: <hr>
                     21:
                     22: <p>
                     23: OpenBSD/macppc runs on the PowerPC-based Macintosh systems from the
                     24: <i>``New World''</i> family, i.e. all Apple computers from the iMac to current
                     25: models.
                     26: </p>
                     27:
                     28: <p>
                     29: A mailinglist dedicated to the OpenBSD/macppc port is available at
                     30: <u><font color="#23238e">ppc@openbsd.org</font></u>.
                     31: To join the OpenBSD/macppc mailing list, send a message body of <b>"subscribe
                     32: ppc"</b> to
                     33: <a href="mailto:majordomo@openbsd.org">majordomo@openbsd.org</a>.
                     34: Please be sure to check our <a href="mail.html">mailing list policy</a> before
                     35: subscribing.
                     36: </p>
                     37:
                     38: <p>
                     39: The current port maintainer is Dale Rahn
                     40: (<a href="mailto:drahn@openbsd.org">drahn@openbsd.org</a>).
                     41: </p>
                     42:
                     43: <a href="#toc"></a>
                     44: <h3><font color="#0000e0"><i>Table of contents</i></font></h3>
                     45: <p>
                     46: <ul>
1.38    ! jufi       47:   <li><a href="#history">History of the port</a>
1.33      miod       48:   <li><a href="#status">Current status</a>
                     49:   <li><a href="#projects">Project list</a>
1.36      miod       50:   <li><a href="#hardware">Supported hardware list</a>
1.33      miod       51:   <li><a href="#install">Getting and installing OpenBSD/macppc</a>
                     52:   <li><a href="#multiboot">Multiboot/Shared HFS disks</a>
                     53:   <li><a href="#root">Boot device considerations</a>
                     54:   <li><a href="#problems">Known problems</a>
                     55:   <li><a href="#other">Other features</a>
                     56: </ul>
                     57: </p>
                     58:
                     59: <hr>
                     60: <a name="history"></a>
                     61: <h3><font color="#0000e0"><strong>History:</strong></font></h3>
                     62:
                     63: <p>
                     64: The OpenBSD/macppc port started as OpenBSD/powerpc, and was initially
                     65: focused on Motorola computers with OpenFirmware, and VI Power4e boards.
                     66: This port was eventually thrown away after OpenBSD 2.5 was released.
                     67: As a result there was no OpenBSD/powerpc port for the 2.6 and 2.7 releases.
                     68: In the meantime, a new port was started, focusing on Apple hardware, and
                     69: based on code from NetBSD/macppc, and after a lot of work from Dale Rahn,
                     70: OpenBSD 2.8 was released with a powerpc port.
                     71: As work on the port continued, it was renamed to OpenBSD/macppc for 3.0.
                     72: </p>
                     73:
                     74: <hr>
                     75: <a name="status"></a>
                     76: <h3><font color="#0000e0"><strong>Current status:</strong></font></h3>
                     77:
                     78: <p>
                     79: Currently, all the hardware listed in the
                     80: <a href="#hardware">supported hardware list</a> section below boots
                     81: multi-user, supports most, if not all, of the on-board devices, and is
                     82: generally useable.
                     83: </p>
                     84:
                     85: <a name="X11"></a>
                     86: <p>
                     87: The X-Window system is supported on all MacPPC systems, however
                     88: only the ATI graphics adapters are supported by an <i>accelerated</i>
                     89: X server at the current time.
                     90: The nVidia accelerated X server does not currently work, however nVidia
                     91: (and ATI) cards can be used by X in framebuffer (unaccelerated) mode,
                     92: at the boot resolution and color depth using the wsfb driver (installed by
                     93: default).
                     94: </p>
                     95:
                     96: <p>
                     97: Directions on enabling the accelerated X server can be found
                     98: in the <tt>/usr/X11R6/README</tt> file on the installed system.
                     99: </p>
                    100:
1.32      jufi      101: <hr>
1.33      miod      102: <a name="projects"></a>
                    103: <h3><font color="#0000e0"><strong>Projects (in no particular order):
                    104: </strong></font></h3>
1.1       brad      105:
                    106: <p>
                    107: <ul>
1.33      miod      108:   <li>Work on unsupported on-board devices
                    109:   <li>Fix known problems
                    110:   <li>Improve port-specific documentation
                    111:   <li>Test more platforms and peripherals, especially PCI drivers
                    112: </ul>
                    113: </p>
                    114:
                    115: <hr>
                    116: <a name="hardware"></a>
                    117: <h3><font color="#0000e0"><strong>Supported hardware:</strong></font></h3>
1.11      drahn     118:
                    119: <p>
1.33      miod      120: <h4>Supported models</h4>
                    121: </p>
1.11      drahn     122:
1.28      henning   123: <p>
1.33      miod      124: PowerPC-based Macintosh systems are divided into <i>"Old World"</i> and
                    125: <i>"New World"</i> systems, the difference being
                    126: <a href="http://developer.apple.com/technotes/tn/tn1167.html">the design
                    127: of the system ROM</a>.
                    128: Only <i>"New World"</i> machines are currently supported.
                    129: Known compatible systems include the following:
1.13      nick      130: <ul>
1.33      miod      131: <li>PowerMac G3 (B&amp;W)
                    132: <li><a href="http://docs.info.apple.com/article.html?artnum=58418">PowerMac G4
                    133: </a> (PCI Graphics? - untested but should work)
                    134: <li>PowerMac G4 (AGP Graphics)
                    135: <li>PowerMac G4 (Digital Audio)
                    136: <li>PowerMac G4 (QuickSilver)
                    137: <li>PowerMac G4 (QuickSilver 2002)
                    138: <li>PowerMac Dual G4
                    139: <li>PowerMac G4 Cube
                    140: <li>iMac Rev A
                    141: <li>iMac Rev B
                    142: <li>iMac Rev C
                    143: <li>iMac DV
                    144: <li>iMac DV+
                    145: <li>LCD iMac
                    146: <li>PowerBook G3 (FireWire)
                    147: <li>PowerBook G4
                    148: <li>iBook
                    149: <li>iBook2 <i>(problems with Combo drive thought to be fixed in 3.1)</i>
                    150: <li>Xserve <i>(currently only running on serial console with video card removed)</i>
                    151: <li>StarMax <i>(development in progress)</i>
                    152: <li>others... <i>(development in progress)</i>
1.11      drahn     153: </ul>
1.33      miod      154: To help us improve the accuracy of this list, <b>PLEASE</b>
                    155: <a href="faq/faq4.html#SendDmesg">send your dmesg</a> after installation
                    156: to <a href="mailto:dmesg@openbsd.org">dmesg@openbsd.org</a>.
                    157: </p>
1.11      drahn     158:
1.33      miod      159: <p>
                    160: <h4>Supported peripherals</h4>
                    161: </p>
1.1       brad      162:
1.33      miod      163: <p>
1.15      deraadt   164: <ul>
                    165: <li><strong>Onboard I/O modules</strong> (obio)
1.1       brad      166: <ul>
                    167: <li>Apple Paddington
                    168: <li>Apple Keylargo
                    169: </ul>
                    170:
1.15      deraadt   171: <li><strong>PCI-Bridges</strong>
1.32      jufi      172: (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=pchb&amp;sektion=4">pchb</a>)
1.1       brad      173: <ul>
                    174: <li>Apple Uni-North
                    175: <li>Apple Uni-North AGP
                    176: <li>Apple Uni-North Eth
                    177: <li>Motorola MPC106 Host-PCI
                    178: </ul>
                    179:
1.15      deraadt   180: <li><strong>Video Cards</strong>
1.1       brad      181: <ul>
                    182: <li>ATI Mach64 GP
                    183: <li>ATI Mach64 GV
                    184: <li>ATI Mach64 128 PK
                    185: <li>ATI Mach64 128 VR AGP
                    186: <li>ATI Mobility M3
                    187: <li>ATI Rage Fury AGP4x
                    188: </ul>
                    189:
1.15      deraadt   190: <li><strong>Ethernet</strong>
1.1       brad      191: <ul>
1.32      jufi      192: <li>DEC DECchip 21040 (Tulip) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=de&amp;sektion=4">de</a>)
                    193: <li>DEC DECchip 21143 (Tulip clones) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=dc&amp;sektion=4">dc</a>)
                    194: <li>Intel i8255x-based (except the i82556) PCI adapters (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=fxp&amp;sektion=4">fxp</a>), including:
1.26      pvalchev  195:     <ul>
                    196:     <li>Intel EtherExpress PRO/10+
                    197:     <li>Intel EtherExpress PRO/100, PRO/100B, and PRO/100+
                    198:     <li>Intel EtherExpress PRO/100+ "Management Adapter"
                    199:     <li>Intel EtherExpress PRO/100 Dual Port
                    200:     <li>Intel PRO/100 VE, PRO/100 VM, and PRO/100 S
                    201:     </ul>
1.27      henning   202: <li>Intel 21145-based PCI adapters (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=dc&amp;sektion=4">dc</a>)
1.32      jufi      203: <li>Apple iMac Rev. A-C Ethernet (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=bm&amp;sektion=4&amp;arch=powerpc">bm</a>)
                    204: <li>Apple GMAC (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=gem&amp;sektion=4">gem</a>)
                    205: <li>Alteon Tigon I/II-based adapters (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ti&amp;sektion=4">ti</a>), including:
1.30      nate      206:     <ul>
                    207:     <li>3Com 3c985 and 3c985B
                    208:     <li>Alteon ACEnic V (fiber and copper)
                    209:     <li>Digital EtherWORKS 1000SX
                    210:     <li>Farallon PN9000SX
                    211:     <li>Netgear GA620 and GA620T
                    212:     <li>SGI Tigon
                    213:     </ul>
                    214:
1.31      margarid  215: <li>Intel i82540, i82542, i82543, i82544, i82545, and i82546 based adapters
1.32      jufi      216: (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=em&amp;sektion=4">em</a>),
1.25      nate      217: including:
                    218:     <ul>
                    219:     <li> Intel PRO/1000 Gigabit Server Adapter (SX Fiber) (PWLA8490)
                    220:     <li> Intel PRO/1000F Gigabit Server Adapter (SX Fiber) (PWLA8490SX)
                    221:     <li> Intel PRO/1000T Server Adapter (PWLA8490T)
                    222:     <li> Intel PRO/1000XT Server Adapter (PWLA8490XT)
                    223:     <li> Intel PRO/1000XS Server Adapter (SX Fiber) (PWLA8490XF)
                    224:     <li> Intel PRO/1000T Desktop Adapter (PWLA8390T)
                    225:     <li> Intel PRO/1000XTL Lo Profile PCI Server (PWLA8490XTL)
                    226:     <li> Intel PRO/1000MT Desktop Adapter (PWLA8390MT)
                    227:     <li> Intel PRO/1000MT Server Adapter (PWLA8490MT)
                    228:     <li> Intel PRO/1000MT Dual Port Server Adapter (PWLA8492MT)
                    229:     <li> Intel PRO/1000MF Server Adapter (SX Fiber) (PWLA8490MF)
                    230:     <li> Intel PRO/1000MF Dual Port Server Adapter (SX Fiber) (PWLA8492MF)
                    231:     <li> Intel PRO/1000MF Server Adapter (LX Fiber) (PWLA8490LX)
                    232:     </ul>
1.1       brad      233: </ul>
                    234:
1.15      deraadt   235: <li><strong>Wireless Ethernet Adapters</strong>
1.1       brad      236: <ul>
1.32      jufi      237: <li>Aironet 802.11DS PCI (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=an&amp;sektion=4">an</a>)
                    238: <li>WaveLAN 802.11DS onboard airport slot, PCI and CardBus (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=wi&amp;sektion=4">wi</a>)
                    239: <li>Prism II and Prism 2.5 PCI and Cardbus (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=wi&amp;sektion=4">wi</a>) see <a href="i386.html">i386</a> for a complete list.
1.1       brad      240: </ul>
1.15      deraadt   241:
                    242: <li><strong>SCSI and IDE Host Adapters</strong>
1.1       brad      243: <ul>
1.32      jufi      244: <li>Symbios Logic 53c810, 53c825 (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=siop&amp;sektion=4">siop</a>)
1.13      nick      245: <li>All PCI IDE
1.32      jufi      246: (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=pciide&amp;sektion=4">pciide</a>)
1.13      nick      247: adapters supported by the <a href="i386.html">i386</a> platform
1.1       brad      248: </ul>
                    249:
1.15      deraadt   250: <li><strong>RAID Controllers</strong>
1.1       brad      251: <ul>
1.32      jufi      252: <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;sektion=4">iop</a>)
1.1       brad      253: </ul>
                    254:
1.15      deraadt   255: <li><strong>Drives</strong>
1.1       brad      256: <ul>
                    257: <li>All IDE devices supported on the <a href="i386.html">i386</a>.
                    258: <li>All ATAPI drives supported on the <a href="i386.html">i386</a>.
                    259: <li>All SCSI drives supported on the <a href="i386.html">i386</a>.
                    260: </ul>
                    261:
1.15      deraadt   262: <li><strong>USB Controllers/Hubs</strong>
1.1       brad      263: <ul>
1.32      jufi      264: <li>Apple USB (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ohci&amp;sektion=4">ohci</a>)
                    265: <li>OHCI root hub (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ohci&amp;sektion=4">ohci</a>)
                    266: <li>Opti RM861HA (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ohci&amp;sektion=4">ohci</a>)
1.1       brad      267: <li>Alps Electric Hub in Apple USB Keyboard
                    268: </ul>
                    269:
1.15      deraadt   270: <li><strong>USB Devices</strong>
1.1       brad      271: <ul>
1.32      jufi      272: <li>Alps Electric Apple USB Keyboard (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ukbd&amp;sektion=4">ukbd</a>)
                    273: <li>Solid Year Keyboard and Mouse (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ukbd&amp;sektion=4">ukbd</a>) (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ums&amp;sektion=4">ums</a>)
                    274: <li>Logitech M4848 (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ums&amp;sektion=4">ums</a>)
                    275: <li>Kensington Kensington USB/PS2 Wheel Mouse (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ums&amp;sektion=4">ums</a>)
                    276: <li>USB Zip Drives (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=umass&amp;sektion=4">umass</a>)
1.1       brad      277: </ul>
                    278:
1.33      miod      279: <li><strong>Cardbus/PCMCIA bridges</strong>
1.19      drahn     280: <ul>
                    281: <li>PBG4 onboard cardbus bridge is now supported, as are PCI CardBus bridges.
1.32      jufi      282: (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=cbb&amp;sektion=4">cbb</a>)
1.19      drahn     283: <li>Orinoco/Prism cards are only current supported cards
1.32      jufi      284: (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=wi&amp;sektion=4">wi</a>)
1.19      drahn     285: </ul>
1.21      drahn     286: <li><strong>Cryptography Devices</strong>
                    287: <ul>
1.32      jufi      288: <li>Broadcom uBsec BCM5801, BCM5802, BCM5805, BCM5820, BCM5821, BCM5822 (and the legacy Bluesteelnet 5501 and 5601 parts)(<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=ubsec&amp;sektion=4">ubsec</a>)
                    289: <li>Hifn 6500-based boards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=lofn&amp;sektion=4">lofn</a>)
                    290: <li>Hifn 7751-based boards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=hifn&amp;sektion=4">hifn</a>), including:
1.29      jason     291:     <ul>
                    292:     <li>Soekris Engineering vpn1201 and vpn1211
                    293:     <li>GTGI PowerCrypt Encryption Accelerator
                    294:     <li>NetSec 7751
                    295:     <li>Hifn reference board
                    296:     <li>Invertex AEON
                    297:     </ul>
1.21      drahn     298: </ul>
1.19      drahn     299:
1.37      mickey    300: <li><strong>Radio Receiver Devices</strong> (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=radio&sektion=9">radio</a>)
                    301: <ul>
                    302: <li>Brooktree 848/849/878/879-based TV tuner cards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=bktr&sektion=4">bktr</a>)
                    303: </ul>
                    304:
1.15      deraadt   305: <li><strong>Other Devices</strong>
1.13      nick      306: <ul>
                    307: <li>Serial Ports: While the modern PowerMacintosh series has no external
                    308:   standard serial ports, many have an on-board modem which can be
                    309:   removed and replaced with an adapter (several manufacturers of these exist)
                    310:   which will produce a standard (and supported) serial port.
1.21      drahn     311: <li>Firewire device now probes and is configured, but no devices will attach
                    312:   on the firewire bus, yet.
1.35      miod      313: <li>Backlight on lcd devices can be controlled through the brightness control
                    314: keys on ADB (laptop) keyboards, or through'wsconsctl -w display.brightness=xx'
1.21      drahn     315: (0 - 100) and 'wsconsctl -w display.backlight=xx' (0 or 100)
1.37      mickey    316: <li>Brooktree 848/849/878/879-based video capture cards (<a href="http://www.openbsd.org/cgi-bin/man.cgi?query=bktr&sektion=4">bktr</a>), including:
                    317:   <ul>
                    318:   <li>Hauppage Wincast TV
                    319:   <li>STB TV PCI Television Tuner
                    320:   <li>Miro PC TV
                    321:   <li>Intel Smart Video Recorder III
                    322:   <li>IMS TV Turbo
                    323:   <li>AVer Media TV/FM
                    324:   </ul>
1.15      deraadt   325: </ul>
1.28      henning   326: </ul>
1.33      miod      327: </p>
                    328:
1.1       brad      329: <p>
1.22      drahn     330: <a name="unsup"></a>
1.33      miod      331: <h4>Unsupported Hardware</h4>
                    332: </p>
                    333:
                    334: <p>
1.1       brad      335: <ul>
1.33      miod      336: <li>Older Apple PowerMac systems with a 601 processor or lacking
                    337:   OpenFirmware are not supported.
1.13      nick      338: <li>Older OpenFirmware machines are not currently supported.
                    339:   This is mostly due to lack of developer resources and limited
                    340:   availability of hardware.
                    341: <li>Built-in modems on most machines are not supported.  In many systems,
                    342:   the serial port the modem is attached to is supported, but the modem
                    343:   itself is not supported.
                    344: <li>Newer PowerBooks have an internal modem attached as a USB device, these
                    345:   are not supported.
                    346: <li>The new 'digital audio' subsystem on iBooks and newer PBG4, G4 and iMacs
                    347:   is not supported.
1.33      miod      348: <li>Sleep/Suspend on laptops is not supported.
1.1       brad      349: </ul>
1.33      miod      350: </p>
                    351:
1.36      miod      352: <hr>
                    353: <a name="install"></a>
                    354: <h3><font color="#0000e0">
                    355: <strong>Getting and installing OpenBSD/macppc:</strong>
                    356: </font></h3>
                    357:
                    358: <p>
                    359: The latest supported OpenBSD/macppc release is
                    360: <a href="32.html">OpenBSD 3.2</a>.
                    361: Here are the
                    362: <a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/3.2/macppc/INSTALL.macppc">
                    363: OpenBSD/macppc 3.2 installation instructions
                    364: </a>.
                    365: </p>
                    366:
                    367: <p>
                    368: Snapshots are made available from time to time, in
                    369: <a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/snapshots/macppc">this location</a>
                    370: as well as in a few
                    371: <a href="ftp.html">mirrors</a>.
                    372: Here are the
                    373: <a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/snapshots/macppc/INSTALL.macppc">
                    374: OpenBSD/macppc snapshot installation instructions
                    375: </a> as well.
                    376: </p>
                    377:
                    378: <p>
                    379: There are several installation media provided:
                    380: <ul>
                    381:   <li><strong>CD boot</strong>
                    382:   <p>
                    383:   With the OpenBSD CD inserted in the cdrom drive, powering the machine on
                    384:   while leaving the ``C'' key pressed will bootstrap the installation
                    385:   procedure.
                    386:   Alternatively, the CD can be booted at the OpenFirmware prompt, with
                    387: <pre>
                    388:   boot cd:,ofwboot 3.2/macppc/bsd.rd
                    389: </pre>
                    390:   </p></li>
                    391:   <li><strong>MacOS-based boot</strong>
                    392:   <p>
                    393:   If the system disk is shared with MacOS, the <tt>ofwboot</tt> boot loader
                    394:   and the <tt>bsd.rd</tt> installation media can be copied to the first HFS
                    395:   or HFS+ partition.
                    396:   Then the installation procedure can be booted at the OpenFirmware prompt,
                    397:   with
                    398: <pre>
                    399:   boot hd:,ofwboot bsd.rd
                    400: </pre>
                    401: </ul>
                    402: </p>
                    403:
                    404: <a name="multiboot"></a>
                    405: <h3><font color="#0000e0">Multiboot/Shared HFS disks:</font></h3>
                    406: <p>
                    407: Having OpenBSD multiboot, or share, a disk with OS X/MacOS 9
                    408: is possible as long as the disk is first partitioned with the
                    409: MacOS utility, <i>Drive Setup</i> (MacOS 9) or <i>System Disk
                    410: Utility</i> (MacOS X).
                    411: Unallocated space, or a partition not in use, must be left for OpenBSD's use.
                    412: Since OpenBSD is only able to boot from HFS (not MacOS X UFS) filesystem,
                    413: the first partition must formated as HFS or HFS+, not UFS, to be able to boot
                    414: OpenBSD.
                    415: </p>
                    416:
                    417: <p>
                    418: Please refer to the installation instructions for more details on how to
                    419: install a shared disk.
                    420: Standalone (no MacOS present) installation is also supported.
                    421: </p>
                    422:
                    423: <a name="root"></a>
                    424: <h3><font color="#0000e0">Boot device considerations:</font></h3>
                    425: <p>
                    426: Modern MacPPC systems have two IDE interfaces (called Ultra and IDE), each of
                    427: which can have two devices on them (ultra0, ultra1, ide0, ide1).
                    428: When multiple drives are present in the system, there are limitations
                    429: of which drives can be configured as the OpenBSD root drive.
                    430: Invalid configurations will not be able to properly
                    431: detect which drive is the root drive, so any attempt will either
                    432: prompt for a root drive or fail.
                    433: </p>
                    434:
                    435: <p>
                    436: <ul>
                    437: <li><tt>ultra0</tt> is always a valid root drive.
                    438: <li><tt>ultra1</tt> is valid as a root disk, as long as <tt>ultra0</tt>
                    439:   is a hard drive, not a non-hard disk ATAPI device).
                    440: <li><tt>ide1</tt> (Zip drive bay) is valid as a root disk if no hard drive is
                    441:   located at <tt>ultra1</tt>,
                    442: <li><tt>ide0</tt> (cdrom) is valid as a root drive <b>only</b> if no hard
                    443:   drives are connected to the Ultra bus.
                    444: </ul>
                    445: </p>
                    446:
                    447: <hr>
1.33      miod      448: <a name="problems"></a>
                    449: <h3><font color="#0000e0">Known Problems</font></h3>
                    450:
1.1       brad      451: <p>
1.33      miod      452: <ul>
                    453: <li>Laptop systems may power off within 2-5 minutes if the lid is closed
                    454:   while running from battery.
                    455: <li>Older iMacs can have a problem with the USB keyboard driver where
                    456:   the first key pressed after boot will repeat endlessly.  The workaround
                    457:   is to press &lt;SHIFT&gt; first or to disconnect and reconnect the USB mouse
                    458:   after the problem has occurred.
                    459: </ul>
                    460: </p>
1.1       brad      461:
1.36      miod      462: <hr>
1.33      miod      463: <a name="other"></a>
                    464: <h3><font color="#0000e0">Other Features</font></h3>
1.1       brad      465:
1.5       miod      466: <p>
1.33      miod      467: <ul>
                    468: <li> &lt;CTRL&gt;&lt;CMD&gt;&lt;POWER&gt; on ADB (not USB) keyboards
                    469: will reset the computer.
                    470: </ul>
1.5       miod      471: </p>
                    472:
1.1       brad      473: <hr>
1.33      miod      474: <a href="plat.html">
                    475: <img height="24" width="24" src="back.gif" border="0" alt="Supported platforms">
                    476: </a>
                    477: <br>
                    478: <small><a href="mailto:www@openbsd.org">www@openbsd.org</a></small>
1.1       brad      479: <br>
1.38    ! jufi      480: <small>$OpenBSD: macppc.html,v 1.37 2003/01/05 02:20:14 mickey Exp $</small>
1.1       brad      481:
                    482: </body>
                    483: </html>