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version 1.18, 1997/05/26 07:36:14 version 1.19, 1997/06/12 04:33:00
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 <h4>OpenBSD/sparc runs on the following classes of machines:</h4>  <h4>OpenBSD/sparc runs on the following classes of machines:</h4>
 <ul>  <ul>
 <li> sun4c: the SS1, SS1+, IPC, SLC, SS2, IPX, and ELC  <li> sun4: 4/100, 4/200, and 4/300
 <li> sun4: the 4/100, 4/200, and 4/300  <li> sun4c: SS1, SS1+, IPC, SLC, SS2, IPX, and ELC
 <li> sun4m machines: at least the LC, LX, 4, 5, 10, and 20. A few cpu  <li> sun4m: at least the LC, LX, 4, 5, 10, and 20. A few cpu
         combinations do not work reliably, as well as a few odd memory          combinations do not work reliably, as well as a few odd memory
         configurations.          configurations.
 <li> Typically it works on faithful clones of these machines  <li> Typically it works on faithful clones of these machines
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 "sparcstation" machine will probably work; for sun4 machines one must be more  "sparcstation" machine will probably work; for sun4 machines one must be more
 careful.</h4>  careful.</h4>
 <ul>  <ul>
 <li> sun4c SBus or on-board cgsix, cgthree, and bwtwo  <li> Sun keyboard and mouse
 <li> 4/200 on-board bwtwo  
 <li> 4/300 and 4/100 P4 video: bwtwo, cgthree, cgsix, cgeight  <li> Floppy drives:
 <li> sun4 VME cgtwo, cgthree, cgsix    <ul>
 <li> P4 on-board bwtwo, and VME cgtwo card<br>    <li> sun4c floppy disk drive
 <li> ttya and ttyb serial ports (can be used as console if needed)    </ul>
 <li> 4/300 ttyc and ttyc serial ports  
 <li> on-board AMD Lance ethernet  <li> Serial ports:
 <li> SBus AMD Lance ethernet cards    <ul>
 <li> on-board Intel 82586 ethernet (ie0 on 4/100 and 4/200)    <li> ttya and ttyb on-board serial ports (can be used as console if needed)
 <li> VME Intel 82586 ethernet cards    <li> 4/300 ttyc and ttyd on-board serial ports
 <li> on-board "esp" SCSI controller (sun4c, sun4m, and 4/300)    </ul>
 <li> SBus "esp" SCSI controller  
 <li> VME "SUN-3"/"si" SCSI controller (polled mode only, slow)  
 <li> 4/110 "SCSI Weird"/"sw" on-board controller (slow, polled mode)  <li> Audio support:
 <li> Xylogics 7053 VME/SMD disk controller ("xd")    <ul>
 <li> Xylogics 450/451 VME disk controller ("xy")    <li> sun4c on-board audio
 <li> sun4c floppy disk drive    </ul>
 <li> sun4c audio  
 <li> sun keyboard and mouse  <li> Framebuffers:
     <ul>
     <li>SBus or sun4c on-board video:
       <ul>
       <li>bwtwo - black and white
       <li>cgthree - 8-bit color, unaccelerated
       <li>cgsix - 8-bit color, accelerated (GX, GX+, TGX, TGX+)  Should probably work with most faithful emulations/clones of SBus cgsix..
       </ul>
   
     <li> 4/200 on-board bwtwo
   
     <li> P4 video (4/100 and 4/300):
       <ul>
       <li> bwtwo - black and white
       <li> cgthree - 8-bit color, unaccelerated
       <li> cgfour - 8-bit color, 1-bit overlay, unaccelerated
       <li> cgsix - 8-bit color, accelerated
       <li> cgeight - 24-bit color, 1-bit overlay, unaccelerated
       </ul>
   
     <li> VME video (sun4):
       <ul>
       <li> cgtwo - black and white
       <li> cgthree - 8-bit color, unaccelerated
       <li> cgsix - 8-bit color, accelerated
       </ul>
     </ul>
   
   <li> Ethernet adapters:
     <ul>
     <li> on-board AMD Lance ethernet
     <li> SBus AMD Lance ethernet cards
     <li> on-board Intel 82586 ethernet (ie0 on 4/100 and 4/200)
     <li> VME Intel 82586 ethernet cards
     </ul>
   
   <li> SCSI controllers:
     <ul>
     <li> on-board "esp" SCSI controller (sun4c, sun4m, and 4/300)
     <li> SBus "esp" SCSI controller
     <li> VME "SUN-3"/"si" SCSI controller (polled mode only, slow)
     <li> 4/110 "SCSI Weird"/"sw" on-board controller (slow, polled mode)
     </ul>
   
   <li> SMD and other disk controllers
     <ul>
     <li> Xylogics 7053 VME/SMD disk controller ("xd")
     <li> Xylogics 450/451 VME disk controller ("xy")
     </ul>
   
 </ul>  </ul>
   
 <h4>OpenBSD/sparc does *not* run on these machines (yet):</h4>  <h4>OpenBSD/sparc does *not* run on these machines (yet):</h4>
 <ul>  <ul>
 <li> 4/400 (lacks support for the I/O cache, and has ethernet problems)  <li> sun4: 4/400 (lacks support for the I/O cache, and has ethernet problems)
 <li> older sun4m systems with Viking (TMS390Z55) processor modules without  <li> sun4m: older systems with Viking (TMS390Z55) processor modules without external cache chips, aka SuperCache, aka MXCC, aka PAC.
 external cache chips, aka SuperCache, aka MXCC, aka PAC.  <li> sun4m: model 4/600 -- uses auxio registers, sun4m VME, I/O cache?
 <li> the VME sun4m model --4/600  <li> sun4d: SPARC Server 1000, SPARC Center 2000 -- XD-Bus vs. M-Bus, MP issues.
 <li> sun4d: sparc center 1000/2000  <li> sun4u: UltraSPARC 64-bit machines.
 <li> the new Ultra sparc-64 machines...  
 <li> It does not work on most Solbourne machines, which are quite different.  <li> It does not work on most Solbourne machines, which are quite different.
 </ul>  </ul>
   
 <p>  <p>
 OpenBSD/Sparc on the 4c/4m machines is criticaly dependent on configuration  OpenBSD/Sparc on the 4c/4m machines is criticaly dependent on configuration
 information returned by the openboot prom.  A sparc clone that differs  information returned by the openboot prom.  A sparc clone that differs
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 <h4>Unsupported Devices. First of all, there are MANY unsupported devices.  <h4>Unsupported Devices. First of all, there are MANY unsupported devices.
 A comprehensive list can probably not be written.</h4>  A comprehensive list can probably not be written.</h4>
 <ul>  <ul>
 <li> VME mti 16-port serial card  <li> Serial Cards:
 <li> VME alm2 16-port serial card    <ul>
 <li> VME mcp 4-port serial card (or is it 8 port)    <li> VME mti 16-port serial card
 <li> VME "sc" SCSI controller    <li> VME alm2 16-port serial card
 <li> VME IPI controller    <li> VME mcp 4-port serial card (or is it 8 port)
 <li> VME cgfive    </ul>
 <li> VME cgnine  
 <li> VME GP/GP2 Graphics Processor  <li>Disk Controllers:
 <li> SBus cgeight 24-bit video card (note: SBus cgeight is quite different from    <ul>
     VME cgeight)    <li> VME "sc" SCSI controller
 <li> SBus GS framebuffer (aka cgtwelve)    <li> VME IPI controller
 <li> SBus GT framebuffer (aka Graphics Tower)    </ul>
 <li> SS20 SX framebuffer (aka cgfourteen)  
 <li> SBus ZX framebuffer (aka Leo)  <li> Framebuffers:
     <ul>
     <li> VME cgfive, 8-bit color, 1-bit overlay, double-buffered, unaccelerated without GP/GP2
     <li> VME cgnine, 24-bit color, 1-bit overlay, double-buffered, unaccelerated without GP/GP2
     <li> VME GP/GP2 Graphics Processor (drives a cgfive or cgnine)
     <li> SBus cgeight 24-bit color, unaccelerated (note: SBus cgeight is quite different from VME/P4 cgeight)
     <li> SBus GS, 24-bit color, 8-bit color, overlay planes, double-buffered, 3-D acceleration (aka cgtwelve)
     <li> SBus GT, 24-bit color, 8-bit color, overlay planes, double-buffered, 3-D acceleration (aka Graphics Tower)
     <li> SS20 SX, 24-bit color, 8-bit color, overlay planes, potentially double-buffered, accelerated (aka cgfourteen)
     <li> SBus ZX, 24-bit color, 8-bit color, overlay planes, double-buffered, 3-D acceleration (aka Leo)
     </ul>
   
 <li> SBus cards other than the standard video/scsi/ethernet listed above  <li> SBus cards other than the standard video/scsi/ethernet listed above
 <li> On-board Audio and ISDN hardware present on some sun4m systems  <li> On-board Audio and ISDN hardware present on some sun4m systems
 <li> sun4m floppies (OpenBSD can boot/install from them though)  <li> sun4m floppies (OpenBSD can boot/install from them though)
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