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ZealOS/docs/Kernel/KDate.ZC.html
TomAwezome 48d4f999cb Update documentation.
2021-12-11 06:10:58 -05:00

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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF2>//See </span><a href="https://zeal-operating-system.github.io/ZealOS/Doc/TimeDate.DD.html#l1"><span class=cF4>::/Doc/TimeDate.DD</span></a><span class=cF0>
<a name="l2"></a>
<a name="l3"></a></span><span class=cF9>U16</span><span class=cF0> </span><span class=cFB>month_start_days</span><span class=cF0>[</span><span class=cFE>12</span><span class=cF0>] = {</span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>31</span><span class=cF0>, </span><span class=cFE>59</span><span class=cF0>, </span><span class=cFE>90</span><span class=cF0>, </span><span class=cFE>120</span><span class=cF0>, </span><span class=cFE>151</span><span class=cF0>, </span><span class=cFE>181</span><span class=cF0>, </span><span class=cFE>212</span><span class=cF0>, </span><span class=cFE>243</span><span class=cF0>, </span><span class=cFE>273</span><span class=cF0>, </span><span class=cFE>304</span><span class=cF0>, </span><span class=cFE>334</span><span class=cF0>};
<a name="l4"></a></span><span class=cF9>U16</span><span class=cF0> </span><span class=cFB>month_start_days_leap</span><span class=cF0>[</span><span class=cFE>12</span><span class=cF0>] = {</span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>31</span><span class=cF0>, </span><span class=cFE>60</span><span class=cF0>, </span><span class=cFE>91</span><span class=cF0>, </span><span class=cFE>121</span><span class=cF0>, </span><span class=cFE>152</span><span class=cF0>, </span><span class=cFE>182</span><span class=cF0>, </span><span class=cFE>213</span><span class=cF0>, </span><span class=cFE>244</span><span class=cF0>, </span><span class=cFE>274</span><span class=cF0>, </span><span class=cFE>305</span><span class=cF0>, </span><span class=cFE>335</span><span class=cF0>};
<a name="l5"></a>
<a name="l6"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>YearStartDate</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> year)
<a name="l7"></a>{</span><span class=cF2>//32-bit day since AD 0, given year number.</span><span class=cF0>
<a name="l8"></a> </span><span class=cF9>I64</span><span class=cF0> y1 = year - </span><span class=cFE>1</span><span class=cF0>, yd4000 = y1 / </span><span class=cFE>4000</span><span class=cF0>, yd400 = y1 / </span><span class=cFE>400</span><span class=cF0>, yd100 = y1 / </span><span class=cFE>100</span><span class=cF0>, yd4 = y1 / </span><span class=cFE>4</span><span class=cF0>;
<a name="l9"></a>
<a name="l10"></a> </span><span class=cF1>return</span><span class=cF0> year * </span><span class=cFE>365</span><span class=cF0> + yd4 - yd100 + yd400 - yd4000;
<a name="l11"></a>}
<a name="l12"></a>
<a name="l13"></a></span><span class=cF9>CDate</span><span class=cF0> </span><span class=cF5>Struct2Date</span><span class=cF0>(</span><span class=cF9>CDateStruct</span><span class=cF0> *_ds)
<a name="l14"></a>{</span><span class=cF2>//Convert CDateStruct to CDate.</span><span class=cF0>
<a name="l15"></a> </span><span class=cF9>CDate</span><span class=cF0> cdt;
<a name="l16"></a> </span><span class=cF9>I64</span><span class=cF0> i1, i2;
<a name="l17"></a>
<a name="l18"></a> i1 = </span><span class=cF5>YearStartDate</span><span class=cF0>(_ds-&gt;year);
<a name="l19"></a> i2 = </span><span class=cF5>YearStartDate</span><span class=cF0>(_ds-&gt;year + </span><span class=cFE>1</span><span class=cF0>);
<a name="l20"></a> </span><span class=cF1>if</span><span class=cF0> (i2 - i1 == </span><span class=cFE>365</span><span class=cF0>)
<a name="l21"></a> i1 += </span><span class=cFB>month_start_days</span><span class=cF0>[_ds-&gt;mon - </span><span class=cFE>1</span><span class=cF0>];
<a name="l22"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l23"></a> i1 += </span><span class=cFB>month_start_days_leap</span><span class=cF0>[_ds-&gt;mon - </span><span class=cFE>1</span><span class=cF0>];
<a name="l24"></a> cdt.date = i1 + _ds-&gt;day_of_mon - </span><span class=cFE>1</span><span class=cF0>;
<a name="l25"></a> cdt.time = (_ds-&gt;sec10000 + </span><span class=cFE>100</span><span class=cF0> * </span><span class=cF7>(</span><span class=cF0>_ds-&gt;sec100 + </span><span class=cFE>100</span><span class=cF0> * (_ds-&gt;sec + </span><span class=cFE>60</span><span class=cF0> * </span><span class=cF7>(</span><span class=cF0>_ds-&gt;min + </span><span class=cFE>60</span><span class=cF0> * _ds-&gt;hour</span><span class=cF7>)</span><span class=cF0>)</span><span class=cF7>)</span><span class=cF0>)
<a name="l26"></a> &lt;&lt; </span><span class=cFE>21</span><span class=cF0> / (</span><span class=cFE>15</span><span class=cF0> * </span><span class=cFE>15</span><span class=cF0> * </span><span class=cFE>3</span><span class=cF0> * </span><span class=cFE>625</span><span class=cF0>);
<a name="l27"></a> </span><span class=cF1>return</span><span class=cF0> cdt;
<a name="l28"></a>}
<a name="l29"></a>
<a name="l30"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>DayOfWeek</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> i)
<a name="l31"></a>{</span><span class=cF2>//Day of week, given 32-bit day since AD 0.</span><span class=cF0>
<a name="l32"></a> i += </span><span class=cF3>CDATE_BASE_DAY_OF_WEEK</span><span class=cF0>;
<a name="l33"></a> </span><span class=cF1>if</span><span class=cF0> (i &gt;= </span><span class=cFE>0</span><span class=cF0>)
<a name="l34"></a> </span><span class=cF1>return</span><span class=cF0> i % </span><span class=cFE>7</span><span class=cF0>;
<a name="l35"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l36"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFE>6</span><span class=cF0> - (</span><span class=cFE>6</span><span class=cF0> - i) % </span><span class=cFE>7</span><span class=cF0>;
<a name="l37"></a>}
<a name="l38"></a>
<a name="l39"></a></span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>Date2Struct</span><span class=cF0>(</span><span class=cF9>CDateStruct</span><span class=cF0> *_ds, </span><span class=cF9>CDate</span><span class=cF0> cdt)
<a name="l40"></a>{</span><span class=cF2>//Convert CDate to CDateStruct.</span><span class=cF0>
<a name="l41"></a> </span><span class=cF9>I64</span><span class=cF0> i, k, date = cdt.date;
<a name="l42"></a>
<a name="l43"></a> _ds-&gt;day_of_week = </span><span class=cF5>DayOfWeek</span><span class=cF0>(date);
<a name="l44"></a> _ds-&gt;year = (date + </span><span class=cFE>1</span><span class=cF0>) * </span><span class=cFE>100000</span><span class=cF0> / </span><span class=cF3>CDATE_YEAR_DAYS_INT</span><span class=cF0>;
<a name="l45"></a> i = </span><span class=cF5>YearStartDate</span><span class=cF0>(_ds-&gt;year);
<a name="l46"></a>
<a name="l47"></a> </span><span class=cF1>while</span><span class=cF0> (i &gt; date)
<a name="l48"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l49"></a> _ds-&gt;year--;
<a name="l50"></a> i = </span><span class=cF5>YearStartDate</span><span class=cF0>(_ds-&gt;year);
<a name="l51"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l52"></a> date -= i;
<a name="l53"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>YearStartDate</span><span class=cF7>(</span><span class=cF0>_ds-&gt;year + </span><span class=cFE>1</span><span class=cF7>)</span><span class=cF0> - i == </span><span class=cFE>365</span><span class=cF0>)
<a name="l54"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l55"></a> k = </span><span class=cFE>0</span><span class=cF0>;
<a name="l56"></a> </span><span class=cF1>while</span><span class=cF0> (date &gt;= </span><span class=cFB>month_start_days</span><span class=cF0>[k + </span><span class=cFE>1</span><span class=cF0>] &amp;&amp; k &lt; </span><span class=cFE>11</span><span class=cF0>)
<a name="l57"></a> k++;
<a name="l58"></a> date -= </span><span class=cFB>month_start_days</span><span class=cF0>[k];
<a name="l59"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l60"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l61"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l62"></a> k = </span><span class=cFE>0</span><span class=cF0>;
<a name="l63"></a> </span><span class=cF1>while</span><span class=cF0> (date &gt;= </span><span class=cFB>month_start_days_leap</span><span class=cF0>[k + </span><span class=cFE>1</span><span class=cF0>] &amp;&amp; k &lt; </span><span class=cFE>11</span><span class=cF0>)
<a name="l64"></a> k++;
<a name="l65"></a> date -= </span><span class=cFB>month_start_days_leap</span><span class=cF0>[k];
<a name="l66"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l67"></a> _ds-&gt;mon = k + </span><span class=cFE>1</span><span class=cF0>;
<a name="l68"></a> _ds-&gt;day_of_mon = date + </span><span class=cFE>1</span><span class=cF0>;
<a name="l69"></a> k = (</span><span class=cFE>625</span><span class=cF0> * </span><span class=cFE>15</span><span class=cF0> * </span><span class=cFE>15</span><span class=cF0> * </span><span class=cFE>3</span><span class=cF0> * cdt.time) &gt;&gt; </span><span class=cFE>21</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>;
<a name="l70"></a> _ds-&gt;sec10000 = </span><span class=cF5>ModU64</span><span class=cF0>(&amp;k, </span><span class=cFE>100</span><span class=cF0>);
<a name="l71"></a> _ds-&gt;sec100 = </span><span class=cF5>ModU64</span><span class=cF0>(&amp;k, </span><span class=cFE>100</span><span class=cF0>);
<a name="l72"></a> _ds-&gt;sec = </span><span class=cF5>ModU64</span><span class=cF0>(&amp;k, </span><span class=cFE>60</span><span class=cF0>);
<a name="l73"></a> _ds-&gt;min = </span><span class=cF5>ModU64</span><span class=cF0>(&amp;k, </span><span class=cFE>60</span><span class=cF0>);
<a name="l74"></a> _ds-&gt;hour = k;
<a name="l75"></a>}
<a name="l76"></a>
<a name="l77"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>FirstDayOfMon</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> i)
<a name="l78"></a>{</span><span class=cF2>//First day of month, given 32-bit day since AD 0.</span><span class=cF0>
<a name="l79"></a> </span><span class=cF9>CDateStruct</span><span class=cF0> ds;
<a name="l80"></a> </span><span class=cF9>CDate</span><span class=cF0> cdt = </span><span class=cFE>0</span><span class=cF0>;
<a name="l81"></a>
<a name="l82"></a> cdt.date = i;
<a name="l83"></a> </span><span class=cF5>Date2Struct</span><span class=cF0>(&amp;ds, cdt);
<a name="l84"></a> ds.day_of_mon = </span><span class=cFE>1</span><span class=cF0>;
<a name="l85"></a> cdt = </span><span class=cF5>Struct2Date</span><span class=cF0>(&amp;ds);
<a name="l86"></a>
<a name="l87"></a> </span><span class=cF1>return</span><span class=cF0> cdt.date;
<a name="l88"></a>}
<a name="l89"></a>
<a name="l90"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>LastDayOfMon</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> i)
<a name="l91"></a>{</span><span class=cF2>//Last day of month, given 32-bit day since AD 0.</span><span class=cF0>
<a name="l92"></a> </span><span class=cF9>CDateStruct</span><span class=cF0> ds;
<a name="l93"></a> </span><span class=cF9>CDate</span><span class=cF0> cdt = </span><span class=cFE>0</span><span class=cF0>;
<a name="l94"></a>
<a name="l95"></a> cdt.date = i;
<a name="l96"></a> </span><span class=cF5>Date2Struct</span><span class=cF0>(&amp;ds, cdt);
<a name="l97"></a> ds.mon++;
<a name="l98"></a> </span><span class=cF1>if</span><span class=cF0> (ds.mon == </span><span class=cFE>13</span><span class=cF0>)
<a name="l99"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l100"></a> ds.mon = </span><span class=cFE>0</span><span class=cF0>;
<a name="l101"></a> ds.year++;
<a name="l102"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l103"></a> ds.day_of_mon = </span><span class=cFE>1</span><span class=cF0>;
<a name="l104"></a> cdt = </span><span class=cF5>Struct2Date</span><span class=cF0>(&amp;ds);
<a name="l105"></a>
<a name="l106"></a> </span><span class=cF1>return</span><span class=cF0> cdt.date - </span><span class=cFE>1</span><span class=cF0>;
<a name="l107"></a>}
<a name="l108"></a>
<a name="l109"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>FirstDayOfYear</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> i)
<a name="l110"></a>{</span><span class=cF2>//First day of year, given 32-bit day since AD 0.</span><span class=cF0>
<a name="l111"></a> </span><span class=cF9>CDateStruct</span><span class=cF0> ds;
<a name="l112"></a> </span><span class=cF9>CDate</span><span class=cF0> cdt = </span><span class=cFE>0</span><span class=cF0>;
<a name="l113"></a>
<a name="l114"></a> cdt.date = i;
<a name="l115"></a> </span><span class=cF5>Date2Struct</span><span class=cF0>(&amp;ds, cdt);
<a name="l116"></a> ds.day_of_mon = </span><span class=cFE>1</span><span class=cF0>;
<a name="l117"></a> ds.mon = </span><span class=cFE>1</span><span class=cF0>;
<a name="l118"></a> cdt = </span><span class=cF5>Struct2Date</span><span class=cF0>(&amp;ds);
<a name="l119"></a>
<a name="l120"></a> </span><span class=cF1>return</span><span class=cF0> cdt.date;
<a name="l121"></a>}
<a name="l122"></a>
<a name="l123"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>LastDayOfYear</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> i)
<a name="l124"></a>{</span><span class=cF2>//Last day of year, given 32-bit day since AD 0.</span><span class=cF0>
<a name="l125"></a> </span><span class=cF9>CDateStruct</span><span class=cF0> ds;
<a name="l126"></a> </span><span class=cF9>CDate</span><span class=cF0> cdt = </span><span class=cFE>0</span><span class=cF0>;
<a name="l127"></a>
<a name="l128"></a> cdt.date = i;
<a name="l129"></a> </span><span class=cF5>Date2Struct</span><span class=cF0>(&amp;ds, cdt);
<a name="l130"></a> ds.day_of_mon = </span><span class=cFE>1</span><span class=cF0>;
<a name="l131"></a> ds.mon = </span><span class=cFE>1</span><span class=cF0>;
<a name="l132"></a> ds.year++;
<a name="l133"></a> cdt = </span><span class=cF5>Struct2Date</span><span class=cF0>(&amp;ds);
<a name="l134"></a>
<a name="l135"></a> </span><span class=cF1>return</span><span class=cF0> cdt.date - </span><span class=cFE>1</span><span class=cF0>;
<a name="l136"></a>}
<a name="l137"></a>
<a name="l138"></a></span><span class=cF1>U8</span><span class=cF0> </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> register)
<a name="l139"></a>{</span><span class=cF2>//Read value from CMOS register. See </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l191"><span class=cF4>CMOS Registers</span></a><span class=cF2>.</span><span class=cF0>
<a name="l140"></a> </span><span class=cF5>OutU8</span><span class=cF0>(</span><span class=cF3>CMOS_SEL</span><span class=cF0>, register);
<a name="l141"></a>
<a name="l142"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF5>InU8</span><span class=cF0>(</span><span class=cF3>CMOS_DATA</span><span class=cF0>);
<a name="l143"></a>}
<a name="l144"></a>
<a name="l145"></a></span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> register, </span><span class=cF9>I64</span><span class=cF0> val)
<a name="l146"></a>{</span><span class=cF2>//Write value to CMOS register. See </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l191"><span class=cF4>CMOS Registers</span></a><span class=cF2>.</span><span class=cF0>
<a name="l147"></a> </span><span class=cF5>OutU8</span><span class=cF0>(</span><span class=cF3>CMOS_SEL</span><span class=cF0>, register);
<a name="l148"></a> </span><span class=cF5>OutU8</span><span class=cF0>(</span><span class=cF3>CMOS_DATA</span><span class=cF0>, val);
<a name="l149"></a>}
<a name="l150"></a>
<a name="l151"></a></span><span class=cF1>Bool</span><span class=cF0> </span><span class=cF5>CMOSIsBcd</span><span class=cF0>()
<a name="l152"></a>{</span><span class=cF2>//Check of CMOS is in binary-coded decimal mode.</span><span class=cF0>
<a name="l153"></a></span><span class=cF2>// Ex: 15:32:44 == 0x15:0x32:0x44 (not good). We use </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KDate.ZC.html#l157"><span class=cF4>Bcd2Binary</span></a><span class=cF2>() to convert.</span><span class=cF0>
<a name="l154"></a> </span><span class=cF1>return</span><span class=cF0> !(</span><span class=cF5>CMOSRegRead</span><span class=cF7>(</span><span class=cF3>CMOSR_STATUS_B</span><span class=cF7>)</span><span class=cF0> &amp; </span><span class=cF3>CMOSF_BINARY</span><span class=cF0>);
<a name="l155"></a>}
<a name="l156"></a>
<a name="l157"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cFD>Bcd2Binary</span><span class=cF0>(</span><span class=cF9>U64</span><span class=cF0> b)
<a name="l158"></a>{
<a name="l159"></a> </span><span class=cF9>I64</span><span class=cF0> i, res = </span><span class=cFE>0</span><span class=cF0>;
<a name="l160"></a>
<a name="l161"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; </span><span class=cFE>16</span><span class=cF0>; i++)
<a name="l162"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l163"></a> res = res * </span><span class=cFE>10</span><span class=cF0> + b &gt;&gt; </span><span class=cFE>60</span><span class=cF0>;
<a name="l164"></a> b &lt;&lt;= </span><span class=cFE>4</span><span class=cF0>;
<a name="l165"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l166"></a>
<a name="l167"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l168"></a>}
<a name="l169"></a>
<a name="l170"></a></span><span class=cF1>U0</span><span class=cF0> </span><span class=cFD>NowDateTimeStruct</span><span class=cF0>(</span><span class=cF9>CDateStruct</span><span class=cF0> *_ds)
<a name="l171"></a>{
<a name="l172"></a> </span><span class=cF9>I64</span><span class=cF0> i;
<a name="l173"></a> </span><span class=cF1>U8</span><span class=cF0> *b = _ds;
<a name="l174"></a>
<a name="l175"></a> </span><span class=cF5>MemSet</span><span class=cF0>(_ds, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CDateStruct</span><span class=cF7>)</span><span class=cF0>);
<a name="l176"></a> </span><span class=cF1>PUSHFD</span><span class=cF0>
<a name="l177"></a> </span><span class=cF1>CLI</span><span class=cF0>
<a name="l178"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF5>LBts</span><span class=cF7>(</span><span class=cF0>&amp;</span><span class=cFB>sys_semas</span><span class=cF0>[</span><span class=cF3>SEMA_SYS_DATE</span><span class=cF0>], </span><span class=cFE>0</span><span class=cF7>)</span><span class=cF0>)
<a name="l179"></a> </span><span class=cF1>PAUSE</span><span class=cF0>
<a name="l180"></a>
<a name="l181"></a> </span><span class=cF1>do</span><span class=cF0>
<a name="l182"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l183"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF5>CMOSRegRead</span><span class=cF7>(</span><span class=cF3>CMOSR_STATUS_A</span><span class=cF7>)</span><span class=cF0> &amp; </span><span class=cF3>CMOSF_UPDATING</span><span class=cF0>)
<a name="l184"></a> </span><span class=cF1>PAUSE</span><span class=cF0>
<a name="l185"></a>
<a name="l186"></a> b[</span><span class=cFE>2</span><span class=cF0>] = </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF3>CMOSR_SEC</span><span class=cF0>);
<a name="l187"></a> b[</span><span class=cFE>3</span><span class=cF0>] = </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF3>CMOSR_MIN</span><span class=cF0>);
<a name="l188"></a> b[</span><span class=cFE>4</span><span class=cF0>] = </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF3>CMOSR_HOUR</span><span class=cF0>);
<a name="l189"></a> b[</span><span class=cFE>5</span><span class=cF0>] = </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF3>CMOSR_DAY_OF_WEEK</span><span class=cF0>);
<a name="l190"></a> b[</span><span class=cFE>6</span><span class=cF0>] = </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF3>CMOSR_DAY_OF_MONTH</span><span class=cF0>);
<a name="l191"></a> b[</span><span class=cFE>7</span><span class=cF0>] = </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF3>CMOSR_MONTH</span><span class=cF0>);
<a name="l192"></a> b[</span><span class=cFE>8</span><span class=cF0>] = </span><span class=cF5>CMOSRegRead</span><span class=cF0>(</span><span class=cF3>CMOSR_YEAR</span><span class=cF0>);
<a name="l193"></a>
<a name="l194"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l195"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF5>CMOSRegRead</span><span class=cF7>(</span><span class=cF3>CMOSR_STATUS_A</span><span class=cF7>)</span><span class=cF0> &amp; </span><span class=cF3>CMOSF_UPDATING</span><span class=cF0>);
<a name="l196"></a>
<a name="l197"></a> </span><span class=cF5>LBtr</span><span class=cF0>(&amp;</span><span class=cFB>sys_semas</span><span class=cF0>[</span><span class=cF3>SEMA_SYS_DATE</span><span class=cF0>], </span><span class=cFE>0</span><span class=cF0>);
<a name="l198"></a> </span><span class=cF1>POPFD</span><span class=cF0>
<a name="l199"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>CMOSIsBcd</span><span class=cF0>)
<a name="l200"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>2</span><span class=cF0>; i &lt; </span><span class=cFE>9</span><span class=cF0>; i++)
<a name="l201"></a> b[i] = </span><span class=cFD>Bcd2Binary</span><span class=cF0>(b[i]);
<a name="l202"></a>
<a name="l203"></a> </span><span class=cF1>if</span><span class=cF0> (_ds-&gt;year &gt; </span><span class=cFE>255</span><span class=cF0>) _ds-&gt;year = </span><span class=cFE>255</span><span class=cF0>;
<a name="l204"></a> _ds-&gt;year += </span><span class=cFE>2000</span><span class=cF0>;
<a name="l205"></a>
<a name="l206"></a> </span><span class=cF1>if</span><span class=cF0> (_ds-&gt;mon &gt; </span><span class=cFE>12</span><span class=cF0>) _ds-&gt;mon = </span><span class=cFE>12</span><span class=cF0>;
<a name="l207"></a> </span><span class=cF1>if</span><span class=cF0> (_ds-&gt;day_of_mon &gt; </span><span class=cFE>31</span><span class=cF0>) _ds-&gt;day_of_mon = </span><span class=cFE>31</span><span class=cF0>;
<a name="l208"></a> </span><span class=cF1>if</span><span class=cF0> (_ds-&gt;day_of_week &gt; </span><span class=cFE>6</span><span class=cF0>) _ds-&gt;day_of_week = </span><span class=cFE>6</span><span class=cF0>;
<a name="l209"></a> </span><span class=cF1>if</span><span class=cF0> (_ds-&gt;hour &gt; </span><span class=cFE>23</span><span class=cF0>) _ds-&gt;hour = </span><span class=cFE>23</span><span class=cF0>;
<a name="l210"></a> </span><span class=cF1>if</span><span class=cF0> (_ds-&gt;min &gt; </span><span class=cFE>59</span><span class=cF0>) _ds-&gt;min = </span><span class=cFE>59</span><span class=cF0>;
<a name="l211"></a> </span><span class=cF1>if</span><span class=cF0> (_ds-&gt;sec &gt; </span><span class=cFE>59</span><span class=cF0>) _ds-&gt;sec = </span><span class=cFE>59</span><span class=cF0>;
<a name="l212"></a>}
<a name="l213"></a>
<a name="l214"></a></span><span class=cF9>CDate</span><span class=cF0> </span><span class=cF5>Now</span><span class=cF0>()
<a name="l215"></a>{</span><span class=cF2>//Current datetime.</span><span class=cF0>
<a name="l216"></a> </span><span class=cF9>CDateStruct</span><span class=cF0> ds;
<a name="l217"></a>
<a name="l218"></a> </span><span class=cFD>NowDateTimeStruct</span><span class=cF0>(&amp;ds);
<a name="l219"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF5>Struct2Date</span><span class=cF0>(&amp;ds)-</span><span class=cFB>local_time_offset</span><span class=cF0>;
<a name="l220"></a>}
<a name="l221"></a>
<a name="l222"></a></span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>TimeSet</span><span class=cF0>(</span><span class=cF9>CDateStruct</span><span class=cF0> *ds)
<a name="l223"></a>{</span><span class=cF2>//Set CMOS time from user crafted </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l216"><span class=cF4>CDateStruct</span></a><span class=cF2>.</span><span class=cF0>
<a name="l224"></a></span><span class=cF2>//Make sure to use hex as decimals if BCD mode. Check using </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KDate.ZC.html#l151"><span class=cF4>CMOSIsBcd</span></a><span class=cF2>().</span><span class=cF0>
<a name="l225"></a></span><span class=cF2>//Ex: if bcd mode and we want 12/30, 10:45:15 -- 0x12/0x30, 0x10:0x45:0x15.</span><span class=cF0>
<a name="l226"></a></span><span class=cF2>//Pass year as double digit number (obviously 20XX is too big for a U8).</span><span class=cF0>
<a name="l227"></a> </span><span class=cF1>U8</span><span class=cF0> *b = ds;
<a name="l228"></a>
<a name="l229"></a> </span><span class=cF1>PUSHFD</span><span class=cF0>
<a name="l230"></a> </span><span class=cF1>CLI</span><span class=cF0>
<a name="l231"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF5>LBts</span><span class=cF7>(</span><span class=cF0>&amp;</span><span class=cFB>sys_semas</span><span class=cF0>[</span><span class=cF3>SEMA_SYS_DATE</span><span class=cF0>], </span><span class=cFE>0</span><span class=cF7>)</span><span class=cF0>)
<a name="l232"></a> </span><span class=cF1>PAUSE</span><span class=cF0>
<a name="l233"></a>
<a name="l234"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF5>CMOSRegRead</span><span class=cF7>(</span><span class=cF3>CMOSR_STATUS_A</span><span class=cF7>)</span><span class=cF0> &amp; </span><span class=cF3>CMOSF_UPDATING</span><span class=cF0>)
<a name="l235"></a> </span><span class=cF1>PAUSE</span><span class=cF0>
<a name="l236"></a>
<a name="l237"></a> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF3>CMOSR_SEC</span><span class=cF0>, b[</span><span class=cFE>2</span><span class=cF0>]);
<a name="l238"></a> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF3>CMOSR_MIN</span><span class=cF0>, b[</span><span class=cFE>3</span><span class=cF0>]);
<a name="l239"></a> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF3>CMOSR_HOUR</span><span class=cF0>, b[</span><span class=cFE>4</span><span class=cF0>]);
<a name="l240"></a> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF3>CMOSR_DAY_OF_WEEK</span><span class=cF0>, b[</span><span class=cFE>5</span><span class=cF0>]);
<a name="l241"></a> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF3>CMOSR_DAY_OF_MONTH</span><span class=cF0>, b[</span><span class=cFE>6</span><span class=cF0>]);
<a name="l242"></a> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF3>CMOSR_MONTH</span><span class=cF0>, b[</span><span class=cFE>7</span><span class=cF0>]);
<a name="l243"></a> </span><span class=cF5>CMOSRegWrite</span><span class=cF0>(</span><span class=cF3>CMOSR_YEAR</span><span class=cF0>, b[</span><span class=cFE>8</span><span class=cF0>]);
<a name="l244"></a>
<a name="l245"></a> </span><span class=cF5>LBtr</span><span class=cF0>(&amp;</span><span class=cFB>sys_semas</span><span class=cF0>[</span><span class=cF3>SEMA_SYS_DATE</span><span class=cF0>], </span><span class=cFE>0</span><span class=cF0>);
<a name="l246"></a> </span><span class=cF1>POPFD</span><span class=cF0>
<a name="l247"></a>}
</span></pre></body>
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