41 lines
2.3 KiB
C
41 lines
2.3 KiB
C
//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Desc: Interrupt related functions //
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// //
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// //
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// Copyright © 2018-2019 The OS/K Team //
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// //
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// This file is part of OS/K. //
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// //
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// OS/K is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 3 of the License, or //
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// any later version. //
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// //
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// OS/K is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY//without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
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#include <kernel/base.h>
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#include <kernel/iomisc.h>
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void CpuEnableRtc(void)
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{
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ulong flags = KePauseIRQs();
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// Setting up the register control
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IoWriteByteOnPort(0x70, 0x8A); //selects status reg A and DISABLE NMI
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IoWriteByteOnPort(0x71, 0x20);
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//Enabling the IRQ 8
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IoWriteByteOnPort(0x70, 0x8B);
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char read = IoReadByteFromPort(0x71); // Because read causes reset
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IoWriteByteOnPort(0x70, 0x8B);
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IoWriteByteOnPort(0x71, read | 0x40);
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KeRestoreIRQs(flags);
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}
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