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