1 @ memory handlers with banking support for SSF II - The New Challengers
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2 @ mostly based on Gens code
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4 @ (c) Copyright 2006, notaz
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5 @ All Rights Reserved
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11 @ default jump tables
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14 .long m_read8_rom0 @ 0x000000 - 0x07FFFF
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15 .long m_read8_rom1 @ 0x080000 - 0x0FFFFF
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16 .long m_read8_rom2 @ 0x100000 - 0x17FFFF
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17 .long m_read8_rom3 @ 0x180000 - 0x1FFFFF
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18 .long m_read8_rom4 @ 0x200000 - 0x27FFFF
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19 .long m_read8_rom5 @ 0x280000 - 0x2FFFFF
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20 .long m_read8_rom6 @ 0x300000 - 0x37FFFF
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21 .long m_read8_rom7 @ 0x380000 - 0x3FFFFF
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22 .long m_read8_rom8 @ 0x400000 - 0x47FFFF
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23 .long m_read8_rom9 @ 0x480000 - 0x4FFFFF
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24 .long m_read8_romA @ 0x500000 - 0x57FFFF
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25 .long m_read8_romB @ 0x580000 - 0x5FFFFF
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26 .long m_read8_romC @ 0x600000 - 0x67FFFF
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27 .long m_read8_romD @ 0x680000 - 0x6FFFFF
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28 .long m_read8_romE @ 0x700000 - 0x77FFFF
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29 .long m_read8_romF @ 0x780000 - 0x7FFFFF
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30 .long m_read_null @ 0x800000 - 0x87FFFF
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31 .long m_read_null @ 0x880000 - 0x8FFFFF
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32 .long m_read_null @ 0x900000 - 0x97FFFF
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33 .long m_read_null @ 0x980000 - 0x9FFFFF
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34 .long m_read8_misc @ 0xA00000 - 0xA7FFFF
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35 .long m_read_null @ 0xA80000 - 0xAFFFFF
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36 .long m_read_null @ 0xB00000 - 0xB7FFFF
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37 .long m_read_null @ 0xB80000 - 0xBFFFFF
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38 .long m_read8_vdp @ 0xC00000 - 0xC7FFFF
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39 .long m_read8_vdp @ 0xC80000 - 0xCFFFFF
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40 .long m_read_null @ 0xD00000 - 0xD7FFFF
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41 .long m_read_null @ 0xD80000 - 0xDFFFFF
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42 .long m_read8_ram @ 0xE00000 - 0xE7FFFF
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43 .long m_read8_ram @ 0xE80000 - 0xEFFFFF
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44 .long m_read8_ram @ 0xF00000 - 0xF7FFFF
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45 .long m_read8_ram @ 0xF80000 - 0xFFFFFF
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48 .long m_read16_rom0 @ 0x000000 - 0x07FFFF
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49 .long m_read16_rom1 @ 0x080000 - 0x0FFFFF
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50 .long m_read16_rom2 @ 0x100000 - 0x17FFFF
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51 .long m_read16_rom3 @ 0x180000 - 0x1FFFFF
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52 .long m_read16_rom4 @ 0x200000 - 0x27FFFF
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53 .long m_read16_rom5 @ 0x280000 - 0x2FFFFF
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54 .long m_read16_rom6 @ 0x300000 - 0x37FFFF
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55 .long m_read16_rom7 @ 0x380000 - 0x3FFFFF
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56 .long m_read16_rom8 @ 0x400000 - 0x47FFFF
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57 .long m_read16_rom9 @ 0x480000 - 0x4FFFFF
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58 .long m_read16_romA @ 0x500000 - 0x57FFFF
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59 .long m_read16_romB @ 0x580000 - 0x5FFFFF
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60 .long m_read16_romC @ 0x600000 - 0x67FFFF
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61 .long m_read16_romD @ 0x680000 - 0x6FFFFF
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62 .long m_read16_romE @ 0x700000 - 0x77FFFF
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63 .long m_read16_romF @ 0x780000 - 0x7FFFFF
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64 .long m_read_null @ 0x800000 - 0x87FFFF
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65 .long m_read_null @ 0x880000 - 0x8FFFFF
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66 .long m_read_null @ 0x900000 - 0x97FFFF
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67 .long m_read_null @ 0x980000 - 0x9FFFFF
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68 .long m_read16_misc @ 0xA00000 - 0xA7FFFF
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69 .long m_read_null @ 0xA80000 - 0xAFFFFF
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70 .long m_read_null @ 0xB00000 - 0xB7FFFF
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71 .long m_read_null @ 0xB80000 - 0xBFFFFF
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72 .long m_read16_vdp @ 0xC00000 - 0xC7FFFF
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73 .long m_read_null @ 0xC80000 - 0xCFFFFF
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74 .long m_read_null @ 0xD00000 - 0xD7FFFF
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75 .long m_read_null @ 0xD80000 - 0xDFFFFF
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76 .long m_read16_ram @ 0xE00000 - 0xE7FFFF
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77 .long m_read16_ram @ 0xE80000 - 0xEFFFFF
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78 .long m_read16_ram @ 0xF00000 - 0xF7FFFF
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79 .long m_read16_ram @ 0xF80000 - 0xFFFFFF
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82 .long m_read32_rom0 @ 0x000000 - 0x07FFFF
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83 .long m_read32_rom1 @ 0x080000 - 0x0FFFFF
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84 .long m_read32_rom2 @ 0x100000 - 0x17FFFF
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85 .long m_read32_rom3 @ 0x180000 - 0x1FFFFF
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86 .long m_read32_rom4 @ 0x200000 - 0x27FFFF
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87 .long m_read32_rom5 @ 0x280000 - 0x2FFFFF
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88 .long m_read32_rom6 @ 0x300000 - 0x37FFFF
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89 .long m_read32_rom7 @ 0x380000 - 0x3FFFFF
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90 .long m_read32_rom8 @ 0x400000 - 0x47FFFF
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91 .long m_read32_rom9 @ 0x480000 - 0x4FFFFF
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92 .long m_read32_romA @ 0x500000 - 0x57FFFF
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93 .long m_read32_romB @ 0x580000 - 0x5FFFFF
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94 .long m_read32_romC @ 0x600000 - 0x67FFFF
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95 .long m_read32_romD @ 0x680000 - 0x6FFFFF
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96 .long m_read32_romE @ 0x700000 - 0x77FFFF
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97 .long m_read32_romF @ 0x780000 - 0x7FFFFF
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98 .long m_read_null @ 0x800000 - 0x87FFFF
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99 .long m_read_null @ 0x880000 - 0x8FFFFF
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100 .long m_read_null @ 0x900000 - 0x97FFFF
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101 .long m_read_null @ 0x980000 - 0x9FFFFF
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102 .long m_read32_misc @ 0xA00000 - 0xA7FFFF
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103 .long m_read_null @ 0xA80000 - 0xAFFFFF
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104 .long m_read_null @ 0xB00000 - 0xB7FFFF
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105 .long m_read_null @ 0xB80000 - 0xBFFFFF
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106 .long m_read32_vdp @ 0xC00000 - 0xC7FFFF
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107 .long m_read_null @ 0xC80000 - 0xCFFFFF
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108 .long m_read_null @ 0xD00000 - 0xD7FFFF
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109 .long m_read_null @ 0xD80000 - 0xDFFFFF
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110 .long m_read32_ram @ 0xE00000 - 0xE7FFFF
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111 .long m_read32_ram @ 0xE80000 - 0xEFFFFF
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112 .long m_read32_ram @ 0xF00000 - 0xF7FFFF
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113 .long m_read32_ram @ 0xF80000 - 0xFFFFFF
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116 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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119 @.section .bss, "brw"
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133 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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137 .global PicoMemReset
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141 .global PicoWriteRomHW_SSF2
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145 ldr r12,=(Pico+0x22204)
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146 ldr r12,[r12] @ romsize
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147 add r12,r12,#0x80000
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149 mov r12,r12,lsr #19
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151 ldr r0, =m_read8_table
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152 ldr r1, =m_read8_def_table
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160 ldr r0, =m_read16_table
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161 ldr r1, =m_read16_def_table
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169 ldr r0, =m_read32_table
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170 ldr r1, =m_read32_def_table
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178 @ update memhandlers according to ROM size
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179 ldr r1, =m_read8_above_rom
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180 ldr r0, =m_read8_table
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187 beq 1b @ do not touch the SRAM area
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188 str r1, [r0, r2, lsl #2]
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191 ldr r1, =m_read16_above_rom
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192 ldr r0, =m_read16_table
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200 str r1, [r0, r2, lsl #2]
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203 ldr r1, =m_read32_above_rom
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204 ldr r0, =m_read32_table
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212 str r1, [r0, r2, lsl #2]
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219 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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222 ldr r2, =m_read8_table
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223 bic r0, r0, #0xff000000
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224 and r1, r0, #0x00f80000
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225 ldr pc, [r2, r1, lsr #17]
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227 PicoRead16: @ u32 a
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228 ldr r2, =m_read16_table
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229 bic r0, r0, #0xff000000
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230 and r1, r0, #0x00f80000
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231 ldr pc, [r2, r1, lsr #17]
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233 PicoRead32: @ u32 a
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234 ldr r2, =m_read32_table
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235 bic r0, r0, #0xff000000
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236 and r1, r0, #0x00f80000
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237 ldr pc, [r2, r1, lsr #17]
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241 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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248 .macro m_read8_rom sect
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249 ldr r1, =(Pico+0x22200)
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250 bic r0, r0, #0xf80000
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253 orr r0, r0, #0x080000*\sect
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261 m_read8_rom0: @ 0x000000 - 0x07ffff
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264 m_read8_rom1: @ 0x080000 - 0x0fffff
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267 m_read8_rom2: @ 0x100000 - 0x17ffff
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270 m_read8_rom3: @ 0x180000 - 0x1fffff
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273 m_read8_rom4: @ 0x200000 - 0x27ffff, SRAM area
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275 ldr r3, =(Pico+0x22200)
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276 ldr r1, [r2, #8] @ SRam.end
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277 bic r0, r0, #0xf80000
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278 orr r0, r0, #0x200000
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281 ldr r1, [r2, #4] @ SRam.start (1ci)
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284 ldrb r1, [r3, #0x11] @ Pico.m.sram_reg (1ci)
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285 sub r12,r0, #0x200000
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287 bne m_read8_detected
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289 ble m_read8_detected
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291 orrne r1, r1, #0x10
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292 strneb r1, [r3, #0x11]
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294 tst r1, #4 @ EEPROM read?
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295 ldrne r0, =SRAMReadEEPROM @ (1ci if ne)
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300 ldr r3, [r2] @ SRam.data
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301 ldr r2, [r2, #4] @ SRam.start (1ci)
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306 ldr r1, [r3, #4] @ 1ci
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309 bxgt lr @ bad location
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315 m_read8_rom5: @ 0x280000 - 0x2fffff
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318 m_read8_rom6: @ 0x300000 - 0x37ffff
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321 m_read8_rom7: @ 0x380000 - 0x3fffff
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324 m_read8_rom8: @ 0x400000 - 0x47ffff
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327 m_read8_rom9: @ 0x480000 - 0x4fffff
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330 @ is any ROM using that much?
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331 m_read8_romA: @ 0x500000 - 0x57ffff
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334 m_read8_romB: @ 0x580000 - 0x5fffff
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337 m_read8_romC: @ 0x600000 - 0x67ffff
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340 m_read8_romD: @ 0x680000 - 0x6fffff
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343 m_read8_romE: @ 0x700000 - 0x77ffff
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346 m_read8_romF: @ 0x780000 - 0x7fffff
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350 bic r2, r0, #0x00ff
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351 bic r2, r2, #0xbf00
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352 cmp r2, #0xa00000 @ Z80 RAM?
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353 ldreq r2, =z80Read8
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361 moveq r0, r0, lsr #8
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367 bxne lr @ invalid read
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373 moveq r0, r0, lsr #8
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378 bic r0, r0, #0xff0000
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390 moveq r0, r0, lsr #8
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395 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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397 .macro m_read16_rom sect
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398 ldr r1, =(Pico+0x22200)
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399 bic r0, r0, #0xf80000
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403 orr r0, r0, #0x080000*\sect
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410 m_read16_rom0: @ 0x000000 - 0x07ffff
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413 m_read16_rom1: @ 0x080000 - 0x0fffff
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416 m_read16_rom2: @ 0x100000 - 0x17ffff
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419 m_read16_rom3: @ 0x180000 - 0x1fffff
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422 m_read16_rom4: @ 0x200000 - 0x27ffff, SRAM area (NBA Live 95)
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424 ldr r3, =(Pico+0x22200)
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425 ldr r1, [r2, #8] @ SRam.end
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426 bic r0, r0, #0xf80000
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428 orr r0, r0, #0x200000
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430 bgt m_read16_nosram
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431 ldrb r1, [r3, #0x11] @ Pico.m.sram_reg (2ci)
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433 beq m_read16_nosram
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434 ldr r1, [r2, #4] @ SRam.start (1ci)
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436 blt m_read16_nosram
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437 ldr r2, [r2] @ SRam.data (1ci)
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439 ldrh r0, [r2, r0] @ 2ci
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442 orr r0, r0, r1, lsl #8
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445 ldr r1, [r3, #4] @ 1ci
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448 bxgt lr @ bad location
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453 m_read16_rom5: @ 0x280000 - 0x2fffff
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456 m_read16_rom6: @ 0x300000 - 0x37ffff
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459 m_read16_rom7: @ 0x380000 - 0x3fffff
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462 m_read16_rom8: @ 0x400000 - 0x47ffff
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465 m_read16_rom9: @ 0x480000 - 0x4fffff
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468 @ is any ROM using that much?
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469 m_read16_romA: @ 0x500000 - 0x57ffff
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472 m_read16_romB: @ 0x580000 - 0x5fffff
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475 m_read16_romC: @ 0x600000 - 0x67ffff
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478 m_read16_romD: @ 0x680000 - 0x6fffff
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481 m_read16_romE: @ 0x700000 - 0x77ffff
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484 m_read16_romF: @ 0x780000 - 0x7fffff
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489 ldr r2, =OtherRead16
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496 bxne lr @ invalid read
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497 ldr r1, =PicoVideoRead
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503 bic r0, r0, #0xff0000
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508 m_read16_above_rom:
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510 ldr r2, =OtherRead16End
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516 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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518 .macro m_read32_rom sect
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519 ldr r1, =(Pico+0x22200)
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520 bic r0, r0, #0xf80000
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524 orr r0, r0, #0x080000*\sect
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527 ldrh r1, [r1, #2] @ 1ci
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528 orr r0, r1, r0, lsl #16
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533 m_read32_rom0: @ 0x000000 - 0x07ffff
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536 m_read32_rom1: @ 0x080000 - 0x0fffff
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539 m_read32_rom2: @ 0x100000 - 0x17ffff
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542 m_read32_rom3: @ 0x180000 - 0x1fffff
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545 m_read32_rom4: @ 0x200000 - 0x27ffff, SRAM area (does any game do long reads?)
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547 ldr r3, =(Pico+0x22200)
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548 ldr r1, [r2, #8] @ SRam.end
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549 bic r0, r0, #0xf80000
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551 orr r0, r0, #0x200000
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553 bgt m_read32_nosram
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554 ldrb r1, [r3, #0x11] @ Pico.m.sram_reg (2ci)
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556 beq m_read32_nosram
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557 ldr r1, [r2, #4] @ SRam.start (1ci)
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559 blt m_read32_nosram
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560 ldr r2, [r2] @ SRam.data (1ci)
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562 ldrh r0, [r2, r0]! @ (1ci)
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564 orr r0, r0, r0, lsl #16
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566 mov r0, r0, lsl #16
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567 orr r0, r0, r1, lsr #8
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569 orr r0, r0, r1, lsl #8
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572 ldr r1, [r3, #4] @ (1ci)
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575 bxgt lr @ bad location
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576 ldr r1, [r3] @ (1ci)
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578 ldrh r1, [r1, #2] @ (2ci)
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579 orr r0, r1, r0, lsl #16
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582 m_read32_rom5: @ 0x280000 - 0x2fffff
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585 m_read32_rom6: @ 0x300000 - 0x37ffff
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588 m_read32_rom7: @ 0x380000 - 0x3fffff
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591 m_read32_rom8: @ 0x400000 - 0x47ffff
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594 m_read32_rom9: @ 0x480000 - 0x4fffff
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597 @ is any ROM using that much?
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598 m_read32_romA: @ 0x500000 - 0x57ffff
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601 m_read32_romB: @ 0x580000 - 0x5fffff
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604 m_read32_romC: @ 0x600000 - 0x67ffff
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607 m_read32_romD: @ 0x680000 - 0x6fffff
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610 m_read32_romE: @ 0x700000 - 0x77ffff
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613 m_read32_romF: @ 0x780000 - 0x7fffff
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628 orr r0, r0, r1, lsl #16
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634 bxne lr @ invalid read
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644 orr r0, r0, r1, lsl #16
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649 bic r0, r0, #0xff0000
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652 ldrh r1, [r1, #2] @ 2ci
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653 orr r0, r1, r0, lsl #16
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656 m_read32_above_rom:
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668 orr r0, r0, r1, lsl #16
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673 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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675 PicoWriteRomHW_SSF2: @ u32 a, u32 d
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677 movs r0, r0, lsr #1
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681 ldr r2, =(Pico+0x22211) @ Pico.m.sram_reg
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689 ldr r3, =m_read8_def_table
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690 ldr r2, =m_read8_table
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691 ldr r12, [r3, r1, lsl #2]
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692 str r12, [r2, r0, lsl #2]
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694 ldr r3, =m_read16_def_table
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695 ldr r2, =m_read16_table
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696 ldr r12, [r3, r1, lsl #2]
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697 str r12, [r2, r0, lsl #2]
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699 ldr r3, =m_read32_def_table
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700 ldr r2, =m_read32_table
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701 ldr r12, [r3, r1, lsl #2]
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702 str r12, [r2, r0, lsl #2]
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