1 /* -*- asm -*- ----------------------------------------------------------- 2 * 3 * Copyright 2009-2014 Intel Corporation; author: H. Peter Anvin 4 * 5 * Permission is hereby granted, free of charge, to any person 6 * obtaining a copy of this software and associated documentation 7 * files (the "Software"), to deal in the Software without 8 * restriction, including without limitation the rights to use, 9 * copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom 11 * the Software is furnished to do so, subject to the following 12 * conditions: 13 * 14 * The above copyright notice and this permission notice shall 15 * be included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 19 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 21 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 24 * OTHER DEALINGS IN THE SOFTWARE. 25 * 26 * ----------------------------------------------------------------------- */ 27 28 /* 29 * adjust.h 30 * 31 * Macros to adjust the drive number 32 */ 33 34 #ifndef ADJUST_H 35 #define ADJUST_H 36 37 #ifdef CTRL_80 38 .macro ADJUST_DRIVE 39 pusha 40 movb $0x02, %ah 41 int $0x16 42 testb $0x04, %al 43 popa 44 jz 1f 45 movb $0x80, %dl 46 1: 47 .endm 48 #elif defined(FORCE_80) 49 .macro ADJUST_DRIVE 50 movb $0x80, %dl 51 .endm 52 #else 53 .macro ADJUST_DRIVE 54 .endm 55 #endif 56 57 #endif /* ADJUST_H */ 58