uhal_faq.ps

来自「AT91所有开发板的资料 AT91所有开发板的资料」· PS 代码 · 共 2,462 行 · 第 1/5 页

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346 594 M 
0.300 0 (The )A 
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450 592 M 
0.200 0 (m)asB 
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479 594 M 
0.077 0 (HAL Library)A 
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496 676 M 
0.162 0 (The )A 
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583 675 M 
-0.192 0 (m)A 
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607 676 M 
0.013 0 (HAL library component contains all of the C and assembly language sources)A 
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496 728 M 
0.127 0 (for the )A 
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637 727 M 
-0.192 0 (m)A 
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661 728 M 
-0.021 0 (HAL API.  Where possible, C has been used as it is more portable across)A 
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496 779 M 
0.036 0 (development tools.   The platform specfic code can be found in the board specific)A 
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496 830 M 
0.035 0 (subdirectories.  Each board has two specific files, driver.s and platform.c.   The)A 
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496 881 M 
-0.192 0 (m)A 
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520 882 M 
0.017 0 (HAL library includes all of the code that supports the )A 
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1571 881 M 
-0.192 0 (m)A 
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1595 882 M 
-0.066 0 (HAL API as well as)A 
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496 933 M 
0.045 0 (generic startup and example VGA \(text mode only\) code.)A 
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496 1017 M 
0.035 0 (Some parts of  the library code works varies depending on how the application is)A 
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496 1069 M 
0.038 0 (to be loaded.   For example, when an application built using the )A 
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1744 1068 M 
-0.192 0 (m)A 
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1768 1069 M 
-0.026 0 (HAL library is)A 
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496 1120 M 
0.037 0 (loaded via the DEMON remote debugger stub then any I/O that the application)A 
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496 1171 M 
0.104 0 (does, say through )A 
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851 1171 M 
-0.004 0 (printf\(\))A 
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1012 1171 M 
0.067 0 ( calls will go through the DEMON back to the host)A 
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496 1223 M 
0.013 0 (debugging application.  The same application built to be run out of flash will)A 
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496 1274 M 
0.086 0 (output through one of the platorm\222s COM ports or other I/O device such as an)A 
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496 1325 M 
0.066 0 (LCD screen for Cogent\222s CMA board.)A 
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496 1410 M 
0.162 0 (The )A 
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583 1409 M 
-0.192 0 (m)A 
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607 1410 M 
0.059 0 (HAL component includes the following functional code:)A 
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496 1494 M 
29.820 0 32 -0.320 0 (\267 )D 
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555 1495 M 
0.025 0 (Start up code.  This code gets the application going either in a standalone)A 
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555 1546 M 
0.089 0 (environment or in a DEMON environment.   In a standalone environement,)A 
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555 1597 M 
-0.192 0 (m)A 
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579 1598 M 
0.010 0 (HAL initializes the interrupt vectors and stacks for the various processor)A 
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555 1649 M 
0.011 0 (modes.  In the DEMON environment it does rather less but attempts to co-)A 
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555 1700 M 
0.056 0 (exist with DEMON.)A 
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496 1784 M 
29.820 0 32 -0.320 0 (\267 )D 
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555 1785 M 
0.065 0 (Memory management code.  This include routines which will reset and)A 
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555 1836 M 
-0.026 0 (initialize the system as well as enabling and disabling the StrongARM\222s caches)A 
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555 1887 M 
0.065 0 (and write buffer in a safe way,)A 
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496 1971 M 
29.820 0 32 -0.320 0 (\267 )D 
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555 1972 M 
0.023 0 (Interrupt handling code.  This code allows applications process interrupts.)A 
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496 2056 M 
29.820 0 32 -0.320 0 (\267 )D 
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555 2057 M 
-0.011 0 (Timer code.  This code allows applications to use timers.)A 
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496 2141 M 
29.820 0 32 -0.320 0 (\267 )D 
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555 2142 M 
0.051 0 (PCI code.)A 
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346 2284 M 
0.238 0 (Include Files)A 
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496 2365 M 
0.020 0 (Like the library the platform specific include files are kept in subdirectories, one)A 
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496 2416 M 
-0.001 0 (for each supported platform.  Each platform has two files, platform.s and)A 
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496 2467 M 
0.078 0 (platform.h.   These have to match each other \(we use an awk script under Unix to)A 
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496 2518 M 
0.026 0 (manage this\).  The main include file, system.h includes platform.h.   Care must be)A 
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496 2569 M 
0.012 0 (taken with the GNU Make files and the ARM project files to make sure that the)A 
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496 2620 M 
0.069 0 (include paths are correct for a given platform.)A 
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496 2704 M 
0.042 0 (It is the platform specific include files which turn on and off various features of)A 
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496 2755 M 
-0.192 0 (m)A 
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520 2756 M 
0.052 0 (HAL.   One example is support for an LCD screen.  LCD is defind as TRUE only)A 
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496 2807 M 
0.054 0 (for the Cogent CMA board.)A 
; 
LH 
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446 317 M 
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596 398 M 
0.022 0 (The example software is in the )A 
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1205 398 M 
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596 483 M 
29.820 0 32 -0.320 0 (\267 )D 
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655 484 M 
0.106 0 (Benchmarking code,)A 
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596 568 M 
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655 569 M 
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671 569 M 
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596 653 M 
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655 654 M 
0.046 0 (Memmory management code,)A 
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596 738 M 
29.820 0 32 -0.320 0 (\267 )D 
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655 739 M 
-0.009 0 (Timer test code.)A 
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596 823 M 
0.033 0 (The benchmarking code consists of three benchmarks, a bubble sort and sieve)A 
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596 874 M 
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596 925 M 
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596 976 M 
0.074 0 (instruction cache on and off\) for each test.)A 
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596 1060 M 
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683 1060 M 
-0.338 0 (\223)A 
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699 1060 M 
0.020 0 (Hello world)A 
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924 1060 M 
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940 1060 M 
0.020 0 ( program is the simplest single threaded program that you can)A 
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596 1111 M 
-0.008 0 (get, it simply prints )A 
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991 1111 M 
-0.338 0 (\223)A 
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1007 1111 M 
0.020 0 (Hello world)A 
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1232 1111 M 
-0.338 0 (\224)A 
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1248 1111 M 
0.028 0 ( and exits.  It is a good t)A 
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1714 1111 M 
0.008 0 (est of the start up code)A 
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596 1162 M 
0.014 0 (for the system.)A 
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596 1246 M 
0.035 0 (The memory management code changes the memory management of the system)A 
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596 1298 M 
0.038 0 (through various modes.  It is really a test harness for )A 
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1642 1297 M 
-0.192 0 (m)A 
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1666 1298 M 
0.090 0 (HAL\222s MMU code.)A 
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596 1382 M 
0.056 0 (The timer test code allocates a timer which is incremented every clock tick.  Every)A 
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596 1433 M 
0.074 0 (so often it prints the current tick count.)A 
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446 1575 M 
-0.113 0 (UCOS)A 
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596 1657 M 
-0.012 0 (uCOS is a simple threaded operating system and it has been ported to the )A 
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2042 1656 M 
-0.192 0 (m)A 
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2066 1657 M 
-0.108 0 (HAL)A 
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596 1709 M 
0.023 0 (library API.  This means that it will run on any platform that )A 
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