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2 Change Note 3.04.3
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3 ==================
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4
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5 - Fixed bug in bottom segment gas needs calculation.
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6
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7 - In the Tech version, max. ppO2 limits can now be adjusted up to 2.0 bar.
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8 Caution: know what you are doing! Recommended max settings are 1.4 bar for
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9 work gases and 1.6 bar for deco gases.
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10
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11 - CCR mode diluent ppO2 versus setpoint check can be disabled now.
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12
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13 - Fine tuning of the better gas cue behavior.
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14
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15 - Improved smoothing of compass display.
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16
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17 - Attention and warning thresholds for gas density put into the options
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18 table (adjustment via external software only, no mapping in OSTC menu
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19 as of now).
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20
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21 - Fixed bug in surface mode firmware version output (relevant to Sport only).
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22
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23
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24 Change Note 3.04.2
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25 ==================
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26
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27 - Fine tuning of the deco calculations for extended stops and normal mode.
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28
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29
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30 Change Note 3.03.6 - .8
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31 =======================
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32
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33 - Various internal code improvements.
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34
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35
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36 Change Note 3.03.5
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37 ==================
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38
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39 - Renamed OC gas type 'normal' to 'work' (gas for the working phase of the
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40 dive). Along with this, it received a down-arrow symbol to depict it as
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41 a gas for use at depth, similar to the '=' symbol that was introduced some
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42 time ago to visually depict deco gases (imagine the horizontal lines as
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43 deco stops).
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44
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45 Set up gases as follows:
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46
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47 Single gas dive:
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48 set gas to use as 'first' and all other gases to 'disabled'.
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49
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50 Gas-change, extended no-stop dive:
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51 set gas to start with to 'first', all other gases to be used later in the dive
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52 to 'work' and the unused gases to 'disabled'.
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53
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54 Deco-dive with one gas for descent & bottom phase, and deco gases:
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55 set bottom gas to 'first', deco gases to 'deco' and the unused to 'disabled'.
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56
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57 Deco-dive with a deco gas used as travel gas on ascent, bottom, and deco gases:
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58 configure the deco gas twice: once as travel gas and once as deco dive. Set the
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59 same change depths for both instances and put the travel gas before the deco
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60 gas in the gas list (i.e: gas 1: travel, gas 2: work (bottom) gas, gases 3-5:
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61 deco gases). Set the travel gas to 'first', the bottom gas to 'work', and the
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62 deco gases to 'deco'. Take care to adjust the pressure available on the deco gas
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63 which is used for travel gas, too, to the amount of gas that is planned to remain
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64 after having drawn the travel portion from it!
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65
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66 - When ppO2 is above normal threshold, but still inside the deco max threshold, and
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67 the dive has not yet progressed to doing the deco stops, the ppO2 warning has been
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68 degraded to an attention, i.e. associated messages appear in yellow now instead of
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69 red as before.
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70
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71 - In the simulator, the +5 minutes function can now be triggered in succession without
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72 needing to reopen the options menu each time.
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73
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74 - The French language package has been upgraded.
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75
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76 - Setting the change depth of the first gas to zero caused some unintended behavior.
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77 This is captured now. Anyhow, since firmware 3.2 it is required to set proper change
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78 depths for gases and diluents, including the ones set as 'first'!
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79
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80 - The deco calculator now automatically picks the best gas suitable for the set bottom
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81 depth. If no suitable gas is found (i.e. configured), calculation will be aborted with
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82 an error message. By this change it is possible to calculate dives that use a travel
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83 gas (set as 'first') and a bottom gas (set as 'work'), as the deco calculator will now
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84 pick the proper bottom gas for calculating the bottom segment.
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85 Note: the deco calculator does not calculate the descent phase but actually spends all
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86 of the set bottom time at bottom depth. While this puts the deco calculation results
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87 on the safe side, beware that the needs on the travel gas will not show up in the gas
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88 needs calculation results.
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89
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90 - OSTC TR: The timeouts for attentions and warnings in connection with discontinued
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91 reception of transmitter data have been relaxed a bit:
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92 - For up to 2 minutes without updating the last value received will be retained.
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93 - After 2 minutes without reception of any updates the pressure value will be marked
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94 as outdated.
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95 - After 4 minutes without reception of any updates a transmitter will be declared lost.
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96
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97 - OSTC TR: pressure logging has been implemented. Logged pressure data can be retrieved
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98 by downloading the logbook data using external logbook software.
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99
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100 - Descent speed in the simulator has been increased from 19 to 24 meters per minute.
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101 This speed is not configurable, nor the simulator's ascent speed of 9 meters/min!
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102
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103 - In dive mode, the battery voltage will be shown when reaching 30%, and a warning will
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104 be issued when the percentage reaches 25% with 1.5 Volt batteries or 15% with LiIon
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105 batteries.
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106
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107
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108 Change Note 3.03.4
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109 ==================
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110
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111 - More compact code for TR firmware and compass.
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112
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113 - Slightly more compact code for deco engine.
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114
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115 - Improvement of code for CNS calculation.
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116
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117 - Added a hysteresis to the dive start / dive end depth threshold.
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118
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119 - Bugfix in non-helium compile variant.
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120
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121
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122 Change Note 3.03.3
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123 ==================
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124
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125 - Added an option "extended stops" (named "Gas Change/...before 1.Stop" in Deco Setup
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126 -> Deco Parameters -> more). If set to YES, a gas switch will be planned immediately
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127 on the change depth of the gas, even if a stop on that depth is not required by deco
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128 constraints. When set to NO, the gas switch will be planned to be done on the next
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129 regular deco stop.
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130 With extended stops enabled and a setting of "Gas Change (time):+0'" the switch will
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131 be planned with no actual halt at the change depth (i.e. "switch on the fly"). With
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132 change time set to > 0', a dedicated stop will be placed at the change depth for the
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133 given number of minutes. This gas change stop may not be needed by deco constraints,
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134 but it will influence the following deco stop depths and times as it introduces some
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135 added time at depth.
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136
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137
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138 Change Note 3.03.2
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139 ==================
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140
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141 - Complete rework of the alternative dive mode screen layout.
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142
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143 - Various code improvements.
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144
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145
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146
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147 Change Note 3.03.1
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148 ==================
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149
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150 - Various code improvements.
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151
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152 - Included RX firmware update into tech version.
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153
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154 - Modularization of the code to allow to compile in or not various features.
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155
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156
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157 Change Note 3.02.1
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158 ==================
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159
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160 - Reworked code for ascent and deco stops calculation. Does produce different results
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161 compared to the code used in 3.00.3! With this implementation of an GF-controlled
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162 deco schedule it becomes visible when deco stops disappear due to a high GF slope
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163 (difference between GF low and GF high) combined with a moderate depth of the first
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164 deco stop.
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165
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166 - When switching between GF and aGF, the depth of the first stop (determined by GF low)
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167 will be recalculated now.
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168
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169 - Improved calculation of the supersaturation.
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170
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171 - New tissue graphics option (compile option as of now): shows absolute tissue pressures
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172 (N2 + He added) and saturation per tissue. In the saturation bargraphs, the green line
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173 marks GF low position, the yellow line GF high and the red one 100%.
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174
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175 - Numerous improvements around dive loop and deco engine start-up.
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176
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177 - speed_fastest now available again on new OSTC Sport, will adjust to 32 MHz.
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178
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179 Memory status: 2.252 bytes free with single language (English), RX-functions & screendump
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180
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181
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182 Change Note 3.00.3c
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183 ===================
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184
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185 - GF low can not be set higher than GF high any more as such a setting would produce
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186 an illogical deco schedule.
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187
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188 - In case the compass is not calibrated, the heading is now displayed as "---°"
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189 instead of ".00°".
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190
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191
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192 Change Note 3.00.3b
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193 ===================
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194
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195 - In the surface tissue graphics, tissues whose supersaturation exceed 100% are shown
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196 in red color now.
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197
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198 - If any tissue is beyond 100%, no desaturation and no-fly times will be shown anymore.
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199
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200 - After use of the dive simulator and the deco calculator the interim tissue desaturation
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201 is catched up now.
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202
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203 - Internal: prohibit selection of fastest speed on OSTC Sport hardware (uses flag for
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204 screen type 2 while there is no dedicated flag for Sport hardware itself).
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205
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206 Memory status: 2.627 bytes free with single language (English), RX-functions, screendump
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207 and deco engine performance measurement compiled in
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208
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209 Change Note 3.00.3
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210 ==================
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211
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212 - Added support for display type 2.
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213
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214 - Added Deco Engine scheduling performance measurement (accessible via debug output).
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215
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216 Memory status: 2.952 bytes free with single language (English), RX-functions and screendump.
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217
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218
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219 Change Note 3.00.2
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220 ==================
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221
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222 - The Deco Engine has been reworked to now run for up to 700 ms each second (configurable,
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223 800 ms may be feasible also), split into two compute chunks per second. This increases
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224 reactivity to buttons presses and compass display, while boosting deco calculation turn-
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225 around times significantly.
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226
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227 Memory status: 3.760 bytes free with single language (English), RX-functions and screendump.
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228
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229
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230 Change Note 3.00.1
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231 ==================
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232
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233 - The simulator now uses the current ambient pressure as surface pressure instead of a fixed
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234 1.000 hPa as done before. So in mountain diving, when being at the dive site the simulator
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235 will show the same NDL times and deco schedules as will be shown in a real dive.
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236
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237 - When exiting the surface menu, the return to the normal surface screen has been sped up
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238 and the display of the power-up logo screen is skipped now also.
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239
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240 - When submerged, the unit will now proceed from surface mode display to dive mode display
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241 without intermediate display of the power-up logos.
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242
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243 - A cue is given when it is time to go up to th next deco stop by highlighting the next stop
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244 data until ascent is done.
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245
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246 - When being shallower than the indicated stop depth, i.e. because the deco needs to be
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247 accelerated, the reduced ambient pressure is figured in into the deco calculations such
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248 that the displayed stop time, TTS and gas needs do immediately reflect the reduced depth.
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249
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250 - When set to imperial units, all depth will be shown in feet now not only in dive mode but
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251 also throughout the whole surface menus.
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252
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253 - When in a leap year, the 29th of February is now correctly handled when adjusting time and
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254 date on exactly that day.
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255
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256 - Bugfix: with the option 'always show ppO2' set, in CCR and pSCR mode a "Dil:x.xx" ppO2
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257 message was sometimes shown twice, once as an info and additionally as an attention or
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258 warning. This has been fixed now: in case of an active attention or warning the secondary
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259 info message gets suppressed.
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260
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261 - Bugfix: the Simulator +5 min function had a punch-through effect on the real world last
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262 dive time (displayed surface interval).
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263
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264 - Tissue desaturation is now also computed while in surface and menu modes.
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265
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266
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267 Some more internal improvements:
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268
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269 - Handling of data transfer into and out of the interrupt service routine has been reworked.
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270
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271 - Memory placement of key variables has been reworked to reduce the number of bank switches.
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272
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273 - In case option check reveals no errors, an unnecessary write-back to the EEPROM is suppressed
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274 to speed-up restart and reduce wear.
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275
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276 - Large portion of the code have been inspected / reviewed.
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277
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278 - Further improvements in code quality, formatting and commenting (done while code review).
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