[26] | 1 | /*
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| 2 | * TOPPERS/JSP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Just Standard Profile Kernel
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| 5 | *
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| 6 | * Copyright (C) 2000-2004 by Embedded and Real-Time Systems Laboratory
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| 7 | * Toyohashi Univ. of Technology, JAPAN
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| 8 | * Copyright (C) 2001-2010 by Industrial Technology Institute,
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| 9 | * Miyagi Prefectural Government, JAPAN
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| 10 | * Copyright (C) 2001-2004 by Dep. of Computer Science and Engineering
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| 11 | * Tomakomai National College of Technology, JAPAN
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| 12 | * Copyright (C) 2001-2004 by Kunihiko Ohnaka
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| 13 | *
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| 14 | * ä¸è¨èä½æ¨©è
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| 15 | ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 16 | * ã«ãã£ã¦å
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| 17 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 18 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 19 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 20 | å¸ï¼ä»¥ä¸ï¼
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| 21 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 22 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 23 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 24 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 25 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 26 | * ç¨ã§ããå½¢ã§åé
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| 27 | å¸ããå ´åã«ã¯ï¼åé
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| 28 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 29 | * è
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| 30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 31 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 32 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 33 | * ç¨ã§ããªãå½¢ã§åé
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| 34 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 35 | * ã¨ï¼
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| 36 | * (a) åé
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| 37 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 38 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 39 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 40 | * (b) åé
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| 41 | å¸ã®å½¢æ
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| 42 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 43 | * å ±åãããã¨ï¼
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| 44 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 45 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 46 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 47 | 責ãããã¨ï¼
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| 48 | *
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| 49 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 50 | ã
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| 51 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 52 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 53 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 54 | *
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| 55 | * @(#) $Id: sys_support.S,v 1.13 2007/03/23 07:22:15 honda Exp $
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| 56 | */
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| 57 |
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| 58 | /*
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| 59 | * ã¿ã¼ã²ããã·ã¹ãã ä¾åã¢ã¸ã¥ã¼ã« ã¢ã»ã³ããªè¨èªé¨
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| 60 | */
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| 61 |
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| 62 | #define _MACRO_ONLY
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| 63 | #include "jsp_kernel.h"
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| 64 |
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| 65 | /*
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| 66 | * ã·ã¹ãã ä¾åã®åæåã«ã¼ãã³
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| 67 | */
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| 68 | .h8300h
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| 69 | .text
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| 70 | .align 2
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| 71 |
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| 72 | .global _hardware_init_hook
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| 73 | _hardware_init_hook:
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| 74 | /*
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| 75 | * ãªãªã¼ã¹ã§ã¯ãå¤é¨DRAMãæå¹ã«ããã
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| 76 | *ããï¼å¤é¨DRAMã使ç¨ããå ´åï¼
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| 77 | */
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| 78 | #ifdef ROM
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| 79 | mov.b #0xff, r1l
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| 80 | mov.l #H8P1DDR, er0
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| 81 | mov.b r1l, @er0 /* enable A0 - A7 */
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| 82 |
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| 83 | add.b #(H8P2DDR - H8P1DDR), r0l
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| 84 | mov.b r1l, @er0 /* enable A8 - A15 */
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| 85 |
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| 86 | add.b #(H8P3DDR - H8P2DDR), r0l
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| 87 | mov.b r1l, @er0 /* enable D8 - D15 */
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| 88 |
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| 89 | mov.b #H8P5DDR_A16, r0h
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| 90 | mov.b r0h, @H8P5DDR /* Enable A16 */
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| 91 | #endif /* #ifdef ROM */
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| 92 |
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| 93 | /*
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| 94 | * Ethernetããã¤ã¹ã使ç¨ããå ´åãããã§CS1ãè¨å®ããªãã¨
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| 95 | *ãããã¤ã¹ã誤åä½ããã
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| 96 | */
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| 97 | #if defined(ROM) || defined(INMEM_ONLY)
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| 98 | mov.b #H8P8DDR0, r0h
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| 99 | mov.b r0h, @H8P8DDR /* Enable CS1/CS2 */
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| 100 | #endif /* defined(ROM) || defined(INMEM_ONLY) */
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| 101 |
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| 102 |
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| 103 | #ifdef ROM
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| 104 | mov.b #H8PBDDR_UCAS, r0h
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| 105 | mov.b r0h, @H8PBDDR /* Enable UCAS */
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| 106 |
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| 107 | /* DRAM: 2,048/32ms: 32ms / 2,048 = 15.625us */
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| 108 | /* 20MHz / 8 / 39 = 1 / 15.6us */
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| 109 | mov.b #((32*(CPU_CLOCK/1000))/(8*2048)), r0h
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| 110 | mov.b r0h, @H8RTCOR
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| 111 |
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| 112 | mov.b #H8RTMCSR_CKS1, r0h
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| 113 | mov.b r0h, @H8RTMCSR /* clock / 8 */
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| 114 |
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| 115 | mov.b #(H8DRCRB_RCYCE | H8DRCRB_MXC1), r0h
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| 116 | mov.b r0h, @H8DRCRB /* column address: 10 bit, A23 - A10 */
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| 117 |
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| 118 | /*
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| 119 | *ããããã«ãã使ç¨ããã¦ããå¤é¨RAMãç°ãªã
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| 120 | *ããã»æ¥ç«è£½ HM5117800
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| 121 | *ããã»OKI製 M5117805D
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| 122 | *
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| 123 | *ã両対å¿ã«ããããã
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| 124 | *ããã»BE ãããï¼ï¼
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| 125 | *ããã»RDMãããï¼ï¼
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| 126 | *
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| 127 | *ã詳細ã¯(toppers-users 1375)ãåç
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| 128 | §
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| 129 | *
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| 130 | */
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| 131 | mov.b #(H8DRCRA_BE | H8DRCRA_DRAS0), r0h
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| 132 | mov.b r0h, @H8DRCRA
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| 133 |
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| 134 | mov.l #(CPU_CLOCK / 1000), er0 /* Wait for DRAM stable */
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| 135 | _hw_init_hock_1:
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| 136 | dec.l #1, er0
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| 137 | bne _hw_init_hock_1
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| 138 |
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| 139 | #endif /* #ifdef ROM */
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| 140 |
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| 141 | /*
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| 142 | * ãã¹ã®ã¦ã§ã¤ãè¨å®
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| 143 | * ããã¹ã»ã¦ã§ã¤ãã»ã³ã³ããã¼ã«ã»ã¬ã¸ã¹ã¿
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| 144 | *
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| 145 | * CS1(RTL8019AS): 2WAIT
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| 146 | * CS2(DRAM): NOWAIT
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| 147 | * CS3(å¢è¨DRAM): NOWAIT
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| 148 | * OTHER 3WAIT
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| 149 | */
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| 150 | mov.b #0xff, r0h
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| 151 | mov.b r0h, @H8WCRH
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| 152 |
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| 153 | mov.b #(H8WCRL_W3_NOWAIT | H8WCRL_W2_NOWAIT | H8WCRL_W1_2WAIT | H8WCRL_W0_3WAIT), r0h
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| 154 | mov.b r0h, @H8WCRL
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| 155 |
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| 156 | /*
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| 157 | * ãã¹ã®ã¢ã¯ã»ã¹ã¹ãã¼ãã®è¨å®
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| 158 | * ããã¹ã»ã¢ã¯ã»ã¹ã»ã¹ãã¼ãã»ã³ã³ããã¼ã«ã»ã¬ã¸ã¹ã¿
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| 159 | */
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| 160 | mov.b #~(H8ASTCR_AST3 | H8ASTCR_AST2):8, r0h
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| 161 | mov.b r0h, @H8ASTCR
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| 162 | rts
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| 163 |
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