1; ----------------------------------------------------------------------- 2; 3; Copyright 2010 Gene Cumm 4; 5; Portions from diskstart.inc: 6; Copyright 1994-2009 H. Peter Anvin - All Rights Reserved 7; Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin 8; 9; This program is free software; you can redistribute it and/or modify 10; it under the terms of the GNU General Public License as published by 11; the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 12; Boston MA 02110-1301, USA; either version 2 of the License, or 13; (at your option) any later version; incorporated herein by reference. 14; 15; ----------------------------------------------------------------------- 16 17; 18; geodsplib.inc 19; 20; Library file for geodsp*.asm 21; 22 23 ; ES:BX points to the buffer with address 24 ; DX,CX as they should be for INT13h,AH=02 25 ; For now assume C<256 26write_chs_lba: 27 pushad 28 mov si,s_atchs 29 call writestr_early 30 call write_chs 31 mov al,':' 32 call writechr 33 mov eax,[es:bx] 34 call writehex8 35 call crlf 36 popad 37 ret 38 39 ; DX,CX as they should be for INT13h,AH=02 40 ; For now assume C<256 41write_chs: 42 pushad 43 mov al,ch 44 mov ah,cl 45 shr ah,6 46 call writehex4 47 mov al,',' 48 call writechr 49 mov al,dh 50 call writehex2 51 mov al,',' 52 call writechr 53 mov al,cl 54 and al,3Fh 55 call writehex2 56 popad 57 ret 58 59write_edd_lba: 60 pushad 61 mov si,s_atchs 62 call writestr_early 63 call writehex8 64 mov al,':' 65 call writechr 66 mov eax,[es:bx] 67 call writehex8 68 call crlf 69 popad 70 ret 71 72 73crlf: 74 push si 75 mov si,s_crlf 76 call writestr_early 77 pop si 78 ret 79 80writechr: 81writechr_early: 82 pushad 83 mov ah,0Eh ; Write to screen as TTY 84 mov bx,0007h ; Attribute 85 int 10h 86 popad 87 ret 88 89%include "writehex.inc" 90 91s_atchs: db '@' 92s_chs: db 'CHS' 93s_space: db ' ', 0 94s_typespec: db 'D=' 95s_type: db 'CHS', 0 96s_end: db 0Dh, 0Ah, 'end' 97s_crlf: db 0Dh, 0Ah, 0 98 99; This indicates the general format of the last few bytes in the boot sector 100BS_MAGIC_VER equ 0x1b << 9 101