?? boot.inc
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/* * bootsect.inc - constants for assembler module for DOS boot sector * * Copyright (C) 1996-1998 Gero Kuhlmann <gero@gkminix.han.de> * * 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 * 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., 675 Mass Ave, Cambridge, MA 02139, USA. *//* *==================================================================== * * Miscellaneous definitions */#define SECT_SIZE 512 /* sector size must be 512 bytes */#define BOOT_SPC 1 /* sectors per cluster */#define BOOT_SPFAT 9 /* sectors per FAT */#define BOOT_SPTRK 18 /* sectors per track */#define BOOT_DIRNUM 224 /* number of root dir entries */#define BOOT_SECNUM 2880 /* total number of sectors */#define BOOT_FORMAT 0xf0 /* format ID for floppy disk */#define BOOT_ID 0x00 /* BIOS id of boot floppy disk */#define BOOT_OFFSET 0x7c00 /* offset for boot block in segment 0 */#define BOOT_SIG_OFS 0x7dfe /* offset of boot signature in memory */#define BOOT_SIG 0xaa55 /* boot signature */#define DIR_SEG 0x0050 /* segment where DOS expects root dir */#define IOSYS_SEG 0x0070 /* load segment for IO.SYS */
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