| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455 |
- /*
- * (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program 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 2 of
- * the License, or (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
- /* i8254.h Intel 8254 PIT registers */
- #ifndef _ASMI386_I8254_H_
- #define _ASMI386_I8954_H_ 1
- #define PIT_T0 0x00 /* PIT channel 0 count/status */
- #define PIT_T1 0x01 /* PIT channel 1 count/status */
- #define PIT_T2 0x02 /* PIT channel 2 count/status */
- #define PIT_COMMAND 0x03 /* PIT mode control, latch and read back */
- /* PIT Command Register Bit Definitions */
- #define PIT_CMD_CTR0 0x00 /* Select PIT counter 0 */
- #define PIT_CMD_CTR1 0x40 /* Select PIT counter 1 */
- #define PIT_CMD_CTR2 0x80 /* Select PIT counter 2 */
- #define PIT_CMD_LATCH 0x00 /* Counter Latch Command */
- #define PIT_CMD_LOW 0x10 /* Access counter bits 7-0 */
- #define PIT_CMD_HIGH 0x20 /* Access counter bits 15-8 */
- #define PIT_CMD_BOTH 0x30 /* Access counter bits 15-0 in two accesses */
- #define PIT_CMD_MODE0 0x00 /* Select mode 0 */
- #define PIT_CMD_MODE1 0x02 /* Select mode 1 */
- #define PIT_CMD_MODE2 0x04 /* Select mode 2 */
- #define PIT_CMD_MODE3 0x06 /* Select mode 3 */
- #define PIT_CMD_MODE4 0x08 /* Select mode 4 */
- #define PIT_CMD_MODE5 0x0A /* Select mode 5 */
- #endif
|
