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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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><HEAD
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><TITLE
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>MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Atlas Board</TITLE
13 
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15 
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TITLE="eCos Reference Manual"
20 
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23 
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25 
TITLE="IA32/x86 x86-Based PC"
26 
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28 
TITLE="MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Malta Board "
29 
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31 
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>eCos Reference Manual</TH
50 
></TR
51 
><TR
52 
><TD
53 
WIDTH="10%"
54 
ALIGN="left"
55 
VALIGN="bottom"
56 
><A
57 
HREF="x86pc.html"
58 
ACCESSKEY="P"
59 
>Prev</A
60 
></TD
61 
><TD
62 
WIDTH="80%"
63 
ALIGN="center"
64 
VALIGN="bottom"
65 
>Chapter 5. Installation and Testing</TD
66 
><TD
67 
WIDTH="10%"
68 
ALIGN="right"
69 
VALIGN="bottom"
70 
><A
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HREF="malta.html"
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ACCESSKEY="N"
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>Next</A
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></TD
75 
></TR
76 
></TABLE
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><HR
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ALIGN="LEFT"
79 
WIDTH="100%"></DIV
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><DIV
81 
CLASS="SECT1"
82 
><H1
83 
CLASS="SECT1"
84 
><A
85 
NAME="ATLAS">MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Atlas Board</H1
86 
><DIV
87 
CLASS="SECT2"
88 
><H2
89 
CLASS="SECT2"
90 
><A
91 
NAME="AEN6659">Overview</H2
92 
><P
93 
>RedBoot supports the DgbSer
94 
serial port and the built in ethernet port for communication and downloads.
95 
The default serial port settings are 115200,8,N,1. RedBoot runs from and supports
96 
flash management for the system flash region.</P
97 
><P
98 
>The following RedBoot configurations are supported:
99 
 
100 
      <DIV
101 
CLASS="INFORMALTABLE"
102 
><A
103 
NAME="AEN6669"><P
104 
></P
105 
><TABLE
106 
BORDER="1"
107 
CLASS="CALSTABLE"
108 
><THEAD
109 
><TR
110 
><TH
111 
ALIGN="LEFT"
112 
VALIGN="TOP"
113 
>Configuration</TH
114 
><TH
115 
ALIGN="LEFT"
116 
VALIGN="TOP"
117 
>Mode</TH
118 
><TH
119 
ALIGN="LEFT"
120 
VALIGN="TOP"
121 
>Description</TH
122 
><TH
123 
ALIGN="LEFT"
124 
VALIGN="TOP"
125 
>File</TH
126 
></TR
127 
></THEAD
128 
><TBODY
129 
><TR
130 
><TD
131 
ALIGN="LEFT"
132 
VALIGN="TOP"
133 
>ROM</TD
134 
><TD
135 
ALIGN="LEFT"
136 
VALIGN="TOP"
137 
>[ROM]</TD
138 
><TD
139 
ALIGN="LEFT"
140 
VALIGN="TOP"
141 
>RedBoot running from the board's flash boot
142 
              sector.</TD
143 
><TD
144 
ALIGN="LEFT"
145 
VALIGN="TOP"
146 
>redboot_ROM.ecm</TD
147 
></TR
148 
><TR
149 
><TD
150 
ALIGN="LEFT"
151 
VALIGN="TOP"
152 
>RAM</TD
153 
><TD
154 
ALIGN="LEFT"
155 
VALIGN="TOP"
156 
>[RAM]</TD
157 
><TD
158 
ALIGN="LEFT"
159 
VALIGN="TOP"
160 
>RedBoot running from RAM with RedBoot in the
161 
              flash boot sector.</TD
162 
><TD
163 
ALIGN="LEFT"
164 
VALIGN="TOP"
165 
>redboot_RAM.ecm</TD
166 
></TR
167 
></TBODY
168 
></TABLE
169 
><P
170 
></P
171 
></DIV
172 
></P
173 
></DIV
174 
><DIV
175 
CLASS="SECT2"
176 
><H2
177 
CLASS="SECT2"
178 
><A
179 
NAME="AEN6688">Initial Installation</H2
180 
><P
181 
>RedBoot is installed using the code download facility built into the
182 
Atlas board. See the Atlas User manual for details, and also the Atlas download
183 
format in <A
184 
HREF="atlas.html#ATLAS-DOWNLOAD-FORMAT"
185 
>the Section called <I
186 
>Atlas download format</I
187 
></A
188 
>.</P
189 
><DIV
190 
CLASS="SECT3"
191 
><H3
192 
CLASS="SECT3"
193 
><A
194 
NAME="AEN6692">Quick download instructions</H3
195 
><P
196 
>Here are quick start instructions for downloading the prebuilt RedBoot
197 
image.</P
198 
><P
199 
></P
200 
><OL
201 
TYPE="1"
202 
><LI
203 
><P
204 
>Locate the prebuilt files in the bin directory: <TT
205 
CLASS="FILENAME"
206 
>deleteall.dl</TT
207 
> and <TT
208 
CLASS="FILENAME"
209 
>redboot.dl</TT
210 
>.</P
211 
></LI
212 
><LI
213 
><P
214 
>Make sure switch S1-1 is OFF and switch S5-1 is ON. Reset
215 
the board and verify that the LED display reads <TT
216 
CLASS="COMPUTEROUTPUT"
217 
>Flash DL</TT
218 
>.</P
219 
></LI
220 
><LI
221 
><P
222 
>Make sure your parallel port is connected to the 1284 port
223 
Of the Atlas board. </P
224 
></LI
225 
><LI
226 
><P
227 
>Send the <TT
228 
CLASS="FILENAME"
229 
>deleteall.dl</TT
230 
> file to the
231 
parallel port to erase previous images:
232 
<TABLE
233 
BORDER="5"
234 
BGCOLOR="#E0E0F0"
235 
WIDTH="70%"
236 
><TR
237 
><TD
238 
><PRE
239 
CLASS="SCREEN"
240 
>$ <TT
241 
CLASS="USERINPUT"
242 
><B
243 
>cat deleteall.dl &#62;/dev/lp0</B
244 
></TT
245 
></PRE
246 
></TD
247 
></TR
248 
></TABLE
249 
>
250 
When this is complete, the LED display should read
251 
<TT
252 
CLASS="COMPUTEROUTPUT"
253 
>Deleted</TT
254 
>.</P
255 
></LI
256 
><LI
257 
><P
258 
>Send the ROM mode RedBoot image to the board:
259 
<TABLE
260 
BORDER="5"
261 
BGCOLOR="#E0E0F0"
262 
WIDTH="70%"
263 
><TR
264 
><TD
265 
><PRE
266 
CLASS="SCREEN"
267 
>$ <TT
268 
CLASS="USERINPUT"
269 
><B
270 
>cat redboot.dl &#62;/dev/lp0</B
271 
></TT
272 
></PRE
273 
></TD
274 
></TR
275 
></TABLE
276 
>
277 
When this is complete, the LED display should show the last
278 
address programmed. This will be something like: <TT
279 
CLASS="COMPUTEROUTPUT"
280 
>1fc17000</TT
281 
>. </P
282 
></LI
283 
><LI
284 
><P
285 
>Change switch S5-1 to OFF and reset the board. The LED display
286 
should read <TT
287 
CLASS="COMPUTEROUTPUT"
288 
>RedBoot</TT
289 
>. </P
290 
></LI
291 
><LI
292 
><P
293 
>Run the RedBoot <B
294 
CLASS="COMMAND"
295 
>fis init</B
296 
>
297 
and <B
298 
CLASS="COMMAND"
299 
>fconfig</B
300 
> commands to initialize the flash.
301 
See <A
302 
HREF="atlas.html#ATLAS-ADDITIONAL-FCONFIG-OPTIONS"
303 
>the Section called <I
304 
>Additional config options</I
305 
></A
306 
>, <A
307 
HREF="flash-image-system.html"
308 
>the Section called <I
309 
>Flash Image System (FIS)</I
310 
> in Chapter 2</A
311 
>
312 
and <A
313 
HREF="persistent-state-flash.html"
314 
>the Section called <I
315 
>Persistent State Flash-based Configuration and Control</I
316 
> in Chapter 2</A
317 
> for details. </P
318 
></LI
319 
></OL
320 
></DIV
321 
><DIV
322 
CLASS="SECT3"
323 
><H3
324 
CLASS="SECT3"
325 
><A
326 
NAME="ATLAS-DOWNLOAD-FORMAT">Atlas download format</H3
327 
><P
328 
>In order to download RedBoot to the Atlas board, it must be converted
329 
to the Atlas download format. There are different ways of doing this depending
330 
on which version of the developer's kit is shipped with the board.   </P
331 
><P
332 
>The <I
333 
CLASS="CITETITLE"
334 
>Atlas Developer's Kit</I
335 
> CD contains an <SPAN
336 
CLASS="APPLICATION"
337 
>srec2flash</SPAN
338 
> utility. The source code for this utility is part
339 
of the <TT
340 
CLASS="FILENAME"
341 
>yamon/yamon-src-01.01.tar.gz</TT
342 
> tarball
343 
on the Dev Kit CD. The path in the expanded tarball is <TT
344 
CLASS="FILENAME"
345 
>yamon/bin/tools</TT
346 
>.  To use
347 
<SPAN
348 
CLASS="APPLICATION"
349 
>srec2flash</SPAN
350 
> to convert the S-record file:
351 
<TABLE
352 
BORDER="5"
353 
BGCOLOR="#E0E0F0"
354 
WIDTH="70%"
355 
><TR
356 
><TD
357 
><PRE
358 
CLASS="SCREEN"
359 
>$ <TT
360 
CLASS="USERINPUT"
361 
><B
362 
>srec2flash -EL -S29 redboot.srec &#62;redboot.dl</B
363 
></TT
364 
></PRE
365 
></TD
366 
></TR
367 
></TABLE
368 
>
369 
The <I
370 
CLASS="CITETITLE"
371 
>Atlas/Malta Developer's Kit</I
372 
> CD
373 
contains an <SPAN
374 
CLASS="APPLICATION"
375 
>srecconv.pl</SPAN
376 
> utility which requires
377 
Perl. This utilty is part of the <TT
378 
CLASS="FILENAME"
379 
>yamon/yamon-src-02.00.tar.gz</TT
380 
>
381 
tarball on the Dev Kit CD. The path in the expanded tarball
382 
is <TT
383 
CLASS="FILENAME"
384 
>yamon/bin/tools</TT
385 
>.   To use <SPAN
386 
CLASS="APPLICATION"
387 
>srecconv</SPAN
388 
> to convert the S-record file:
389 
<TABLE
390 
BORDER="5"
391 
BGCOLOR="#E0E0F0"
392 
WIDTH="70%"
393 
><TR
394 
><TD
395 
><PRE
396 
CLASS="SCREEN"
397 
>$ <TT
398 
CLASS="USERINPUT"
399 
><B
400 
>cp redboot_ROM.srec redboot_ROM.rec</B
401 
></TT
402 
>
403 
$ <TT
404 
CLASS="USERINPUT"
405 
><B
406 
>srecconv.pl -ES L -A 29 redboot_ROM</B
407 
></TT
408 
></PRE
409 
></TD
410 
></TR
411 
></TABLE
412 
>
413 
The resulting file is named <TT
414 
CLASS="FILENAME"
415 
>redboot_ROM.fl</TT
416 
>.</P
417 
></DIV
418 
></DIV
419 
><DIV
420 
CLASS="SECT2"
421 
><H2
422 
CLASS="SECT2"
423 
><A
424 
NAME="AEN6746">Flash management</H2
425 
><DIV
426 
CLASS="SECT3"
427 
><H3
428 
CLASS="SECT3"
429 
><A
430 
NAME="ATLAS-ADDITIONAL-FCONFIG-OPTIONS">Additional config options</H3
431 
><P
432 
>The ethernet MAC address is stored in flash manually using the <B
433 
CLASS="COMMAND"
434 
>fconfig</B
435 
> command. You can use the YAMON <B
436 
CLASS="COMMAND"
437 
>setenv
438 
ethaddr</B
439 
> command to print out the board ethernet address.
440 
Typically, it is:    <TABLE
441 
BORDER="5"
442 
BGCOLOR="#E0E0F0"
443 
WIDTH="70%"
444 
><TR
445 
><TD
446 
><PRE
447 
CLASS="SCREEN"
448 
>00:0d:a0:00:<TT
449 
CLASS="REPLACEABLE"
450 
><I
451 
>xx:xx</I
452 
></TT
453 
></PRE
454 
></TD
455 
></TR
456 
></TABLE
457 
> where
458 
<TT
459 
CLASS="REPLACEABLE"
460 
><I
461 
>xx.xx</I
462 
></TT
463 
> is the hex representation of the
464 
board serial number.</P
465 
></DIV
466 
></DIV
467 
><DIV
468 
CLASS="SECT2"
469 
><H2
470 
CLASS="SECT2"
471 
><A
472 
NAME="AEN6756">Additional commands</H2
473 
><P
474 
>The <B
475 
CLASS="COMMAND"
476 
>exec</B
477 
> command which allows the
478 
loading and execution of Linux kernels, is supported for this architecture
479 
 (see <A
480 
HREF="executing-programs.html"
481 
>the Section called <I
482 
>Executing Programs from RedBoot</I
483 
> in Chapter 2</A
484 
>). The
485 
<B
486 
CLASS="COMMAND"
487 
>exec</B
488 
> parameters used for MIPS boards are:</P
489 
><P
490 
></P
491 
><DIV
492 
CLASS="VARIABLELIST"
493 
><DL
494 
><DT
495 
>-b <TT
496 
CLASS="REPLACEABLE"
497 
><I
498 
>&lt;addr&#62;</I
499 
></TT
500 
></DT
501 
><DD
502 
><P
503 
>Location to store command line and environment passed to kernel</P
504 
></DD
505 
><DT
506 
>-w <TT
507 
CLASS="REPLACEABLE"
508 
><I
509 
>&lt;time&#62;</I
510 
></TT
511 
></DT
512 
><DD
513 
><P
514 
>Wait time in seconds before starting kernel</P
515 
></DD
516 
><DT
517 
>-c <TT
518 
CLASS="REPLACEABLE"
519 
><I
520 
>"params"</I
521 
></TT
522 
></DT
523 
><DD
524 
><P
525 
>Parameters passed to kernel</P
526 
></DD
527 
><DT
528 
><TT
529 
CLASS="REPLACEABLE"
530 
><I
531 
>&lt;addr&#62;</I
532 
></TT
533 
></DT
534 
><DD
535 
><P
536 
>Kernel entry point, defaulting to the entry point of the last image
537 
loaded</P
538 
></DD
539 
></DL
540 
></DIV
541 
><P
542 
>Linux kernels on MIPS platforms expect the entry point to be called with arguments
543 
in the registers equivalent to a C call with prototype:
544 
<TABLE
545 
BORDER="5"
546 
BGCOLOR="#E0E0F0"
547 
WIDTH="70%"
548 
><TR
549 
><TD
550 
><PRE
551 
CLASS="PROGRAMLISTING"
552 
>void Linux(int argc, char **argv, char **envp);</PRE
553 
></TD
554 
></TR
555 
></TABLE
556 
></P
557 
><P
558 
>RedBoot will place the appropriate data at the offset specified by the
559 
<TT
560 
CLASS="PARAMETER"
561 
><I
562 
>-b</I
563 
></TT
564 
> parameter, or by default at address 0x80080000, and will set the
565 
arguments accordingly when calling into the kernel.</P
566 
><P
567 
>The default entry point, if no image with explicit entry point has been loaded and
568 
none is specified, is 0x80000750.</P
569 
></DIV
570 
><DIV
571 
CLASS="SECT2"
572 
><H2
573 
CLASS="SECT2"
574 
><A
575 
NAME="AEN6788">Interrupts</H2
576 
><P
577 
>RedBoot uses an interrupt vector table which is located at address 0x80000400.
578 
Entries in this table are pointers to functions with this protoype:      <TABLE
579 
BORDER="5"
580 
BGCOLOR="#E0E0F0"
581 
WIDTH="70%"
582 
><TR
583 
><TD
584 
><PRE
585 
CLASS="PROGRAMLISTING"
586 
>int irq_handler( unsigned vector, unsigned data )</PRE
587 
></TD
588 
></TR
589 
></TABLE
590 
>On an atlas
591 
board, the vector argument is one of 25 interrupts defined in <TT
592 
CLASS="COMPUTEROUTPUT"
593 
>hal/mips/atlas/<TT
594 
CLASS="REPLACEABLE"
595 
><I
596 
>VERSION</I
597 
></TT
598 
>/include/plf_intr.h</TT
599 
>: <TABLE
600 
BORDER="5"
601 
BGCOLOR="#E0E0F0"
602 
WIDTH="70%"
603 
><TR
604 
><TD
605 
><PRE
606 
CLASS="PROGRAMLISTING"
607 
>#define CYGNUM_HAL_INTERRUPT_SER                 0
608 
#define CYGNUM_HAL_INTERRUPT_TIM0                1
609 
#define CYGNUM_HAL_INTERRUPT_2                   2
610 
#define CYGNUM_HAL_INTERRUPT_3                   3
611 
#define CYGNUM_HAL_INTERRUPT_RTC                 4
612 
#define CYGNUM_HAL_INTERRUPT_COREHI              5
613 
#define CYGNUM_HAL_INTERRUPT_CORELO              6
614 
#define CYGNUM_HAL_INTERRUPT_7                   7
615 
#define CYGNUM_HAL_INTERRUPT_PCIA                8
616 
#define CYGNUM_HAL_INTERRUPT_PCIB                9
617 
#define CYGNUM_HAL_INTERRUPT_PCIC               10
618 
#define CYGNUM_HAL_INTERRUPT_PCID               11
619 
#define CYGNUM_HAL_INTERRUPT_ENUM               12
620 
#define CYGNUM_HAL_INTERRUPT_DEG                13
621 
#define CYGNUM_HAL_INTERRUPT_ATXFAIL            14
622 
#define CYGNUM_HAL_INTERRUPT_INTA               15
623 
#define CYGNUM_HAL_INTERRUPT_INTB               16
624 
#define CYGNUM_HAL_INTERRUPT_INTC               17
625 
#define CYGNUM_HAL_INTERRUPT_INTD               18
626 
#define CYGNUM_HAL_INTERRUPT_SERR               19
627 
#define CYGNUM_HAL_INTERRUPT_HW1                20
628 
#define CYGNUM_HAL_INTERRUPT_HW2                21
629 
#define CYGNUM_HAL_INTERRUPT_HW3                22
630 
#define CYGNUM_HAL_INTERRUPT_HW4                23
631 
#define CYGNUM_HAL_INTERRUPT_HW5                24</PRE
632 
></TD
633 
></TR
634 
></TABLE
635 
>The data
636 
passed to the ISR is pulled from a data table (<TT
637 
CLASS="COMPUTEROUTPUT"
638 
>hal_interrupt_data</TT
639 
>) which immediately follows the interrupt vector table. With
640 
25 interrupts, the data table starts at address 0x80000464 on atlas.</P
641 
><P
642 
>An application may create a normal C function with the above prototype
643 
to be an ISR. Just poke its address into the table at the correct index and
644 
enable the interrupt at its source. The return value of the ISR is ignored
645 
by RedBoot. </P
646 
></DIV
647 
><DIV
648 
CLASS="SECT2"
649 
><H2
650 
CLASS="SECT2"
651 
><A
652 
NAME="AEN6797">Memory Maps</H2
653 
><P
654 
>Memory Maps RedBoot sets up the following memory map on the Atlas board.
655 
<TABLE
656 
BORDER="5"
657 
BGCOLOR="#E0E0F0"
658 
WIDTH="70%"
659 
><TR
660 
><TD
661 
><PRE
662 
CLASS="PROGRAMLISTING"
663 
>Physical Address Range Description
664 
----------------------- -------------
665 
0x00000000 - 0x07ffffff SDRAM
666 
0x08000000 - 0x17ffffff PCI Memory Space
667 
0x18000000 - 0x1bdfffff PCI I/O Space
668 
0x1be00000 - 0x1bffffff System Controller
669 
0x1c000000 - 0x1dffffff System flash
670 
0x1e000000 - 0x1e3fffff Monitor flash
671 
0x1f000000 - 0x1fbfffff FPGA</PRE
672 
></TD
673 
></TR
674 
></TABLE
675 
></P
676 
></DIV
677 
><DIV
678 
CLASS="SECT2"
679 
><H2
680 
CLASS="SECT2"
681 
><A
682 
NAME="AEN6801">Rebuilding RedBoot</H2
683 
><P
684 
>These shell variables provide the platform-specific information
685 
needed for building RedBoot according to the procedure described in
686 
<A
687 
HREF="rebuilding-redboot.html"
688 
>Chapter 3</A
689 
>:
690 
<TABLE
691 
BORDER="5"
692 
BGCOLOR="#E0E0F0"
693 
WIDTH="70%"
694 
><TR
695 
><TD
696 
><PRE
697 
CLASS="PROGRAMLISTING"
698 
>export TARGET=atlas_mips32_4kc
699 
export TARGET=atlas_mips64_5kc
700 
export ARCH_DIR=mips
701 
export PLATFORM_DIR=atlas</PRE
702 
></TD
703 
></TR
704 
></TABLE
705 
>
706 
 
707 
Use one of the TARGET settings only.&#13;</P
708 
><P
709 
>The names of configuration files are listed above with the
710 
description of the associated modes.</P
711 
></DIV
712 
></DIV
713 
><DIV
714 
CLASS="NAVFOOTER"
715 
><HR
716 
ALIGN="LEFT"
717 
WIDTH="100%"><TABLE
718 
SUMMARY="Footer navigation table"
719 
WIDTH="100%"
720 
BORDER="0"
721 
CELLPADDING="0"
722 
CELLSPACING="0"
723 
><TR
724 
><TD
725 
WIDTH="33%"
726 
ALIGN="left"
727 
VALIGN="top"
728 
><A
729 
HREF="x86pc.html"
730 
ACCESSKEY="P"
731 
>Prev</A
732 
></TD
733 
><TD
734 
WIDTH="34%"
735 
ALIGN="center"
736 
VALIGN="top"
737 
><A
738 
HREF="ecos-ref.html"
739 
ACCESSKEY="H"
740 
>Home</A
741 
></TD
742 
><TD
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WIDTH="33%"
744 
ALIGN="right"
745 
VALIGN="top"
746 
><A
747 
HREF="malta.html"
748 
ACCESSKEY="N"
749 
>Next</A
750 
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751 
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752 
><TR
753 
><TD
754 
WIDTH="33%"
755 
ALIGN="left"
756 
VALIGN="top"
757 
>IA32/x86 x86-Based PC</TD
758 
><TD
759 
WIDTH="34%"
760 
ALIGN="center"
761 
VALIGN="top"
762 
><A
763 
HREF="installation-and-testing.html"
764 
ACCESSKEY="U"
765 
>Up</A
766 
></TD
767 
><TD
768 
WIDTH="33%"
769 
ALIGN="right"
770 
VALIGN="top"
771 
>MIPS/MIPS32(CoreLV 4Kc)+MIPS64(CoreLV 5Kc) Malta Board</TD
772 
></TR
773 
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774 
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775 
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776 
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777 
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