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53 lines
2.5 KiB
C
53 lines
2.5 KiB
C
//----------------------------------------------------------------------------//
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// GNU GPL OS/K //
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// //
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// Desc: Cursor-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/boot.h>
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#include <kernel/cursor.h>
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#include <kernel/iomisc.h>
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void IoEnableCursor(void)
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{
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IoWriteByteOnPort(0x3D4, 0xA);
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IoWriteByteOnPort(0x3D5, (IoReadByteFromPort(0x3D5) & 0xC0) | 15);
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IoWriteByteOnPort(0x3D4, 0xB);
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IoWriteByteOnPort(0x3D5, (IoReadByteFromPort(0x3D5) & 0xE0) | 15);
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}
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void IoDisableCursor(void)
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{
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IoWriteByteOnPort(0x3D4, 0x0A);
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IoWriteByteOnPort(0x3D5, 0x20);
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}
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void IoUpdateCursor(int x, int y)
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{
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const ushort pos = y * BtVideoInfo.framebufferWidth + x;
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IoWriteByteOnPort(0x3D4, 0x0F);
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IoWriteByteOnPort(0x3D5, (pos & 0xFF));
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IoWriteByteOnPort(0x3D4, 0x0E);
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IoWriteByteOnPort(0x3D5, ((pos >> 8) & 0xFF));
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}
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