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