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1.1 ! root 1: /* ! 2: * Copyright (c) 1995-1994 The University of Utah and ! 3: * the Computer Systems Laboratory at the University of Utah (CSL). ! 4: * All rights reserved. ! 5: * ! 6: * Permission to use, copy, modify and distribute this software is hereby ! 7: * granted provided that (1) source code retains these copyright, permission, ! 8: * and disclaimer notices, and (2) redistributions including binaries ! 9: * reproduce the notices in supporting documentation, and (3) all advertising ! 10: * materials mentioning features or use of this software display the following ! 11: * acknowledgement: ``This product includes software developed by the ! 12: * Computer Systems Laboratory at the University of Utah.'' ! 13: * ! 14: * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS ! 15: * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF ! 16: * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. ! 17: * ! 18: * CSL requests users of this software to return to [email protected] any ! 19: * improvements that they make and grant CSL redistribution rights. ! 20: * ! 21: * Author: Bryan Ford, University of Utah CSL ! 22: */ ! 23: #ifndef _I386_PC_A20_H_ ! 24: #define _I386_PC_A20_H_ ! 25: ! 26: /* By default these point to the "raw" routines in pc/a20.c. ! 27: They can be revectored to other routines, ! 28: e.g. to use a HIMEM driver's facilities. */ ! 29: extern void (*i16_enable_a20)(void); ! 30: extern void (*i16_disable_a20)(void); ! 31: ! 32: #endif _I386_PC_A20_H_
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