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425 | victor | 1 | $Revision: 431 $ |
431 | serge | 2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
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4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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5 | ;; Distributed under terms of the GNU General Public License ;; |
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6 | ;; ;; |
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7 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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8 | |||
1 | ha | 9 | ; READ RAMDISK IMAGE FROM HD |
10 | |||
11 | cmp [boot_dev],1 |
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12 | jne no_sys_on_hd |
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13 | |||
412 | serge | 14 | test [DRIVE_DATA+1],byte 0x40 |
1 | ha | 15 | jz position_2 |
16 | mov [hdbase],0x1f0 |
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17 | mov [hdid],0x0 |
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18 | mov [hdpos],1 |
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19 | mov [fat32part],0 |
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20 | position_1_1: |
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21 | inc [fat32part] |
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22 | call search_and_read_image |
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23 | cmp [image_retrieved],1 |
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24 | je yes_sys_on_hd |
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412 | serge | 25 | movzx eax,byte [DRIVE_DATA+2] |
1 | ha | 26 | cmp [fat32part],eax |
27 | jle position_1_1 |
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28 | position_2: |
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412 | serge | 29 | test [DRIVE_DATA+1],byte 0x10 |
1 | ha | 30 | jz position_3 |
31 | mov [hdbase],0x1f0 |
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32 | mov [hdid],0x10 |
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33 | mov [hdpos],2 |
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34 | mov [fat32part],0 |
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35 | position_2_1: |
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36 | inc [fat32part] |
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37 | call search_and_read_image |
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38 | cmp [image_retrieved],1 |
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39 | je yes_sys_on_hd |
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412 | serge | 40 | movzx eax,byte [DRIVE_DATA+3] |
1 | ha | 41 | cmp eax,[fat32part] |
42 | jle position_2_1 |
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43 | position_3: |
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412 | serge | 44 | test [DRIVE_DATA+1],byte 0x4 |
1 | ha | 45 | jz position_4 |
46 | mov [hdbase],0x170 |
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47 | mov [hdid],0x0 |
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48 | mov [hdpos],3 |
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49 | mov [fat32part],0 |
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50 | position_3_1: |
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51 | inc [fat32part] |
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52 | call search_and_read_image |
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53 | cmp [image_retrieved],1 |
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54 | je yes_sys_on_hd |
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412 | serge | 55 | movzx eax,byte [DRIVE_DATA+4] |
1 | ha | 56 | cmp eax,[fat32part] |
57 | jle position_3_1 |
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58 | position_4: |
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412 | serge | 59 | test [DRIVE_DATA+1],byte 0x1 |
1 | ha | 60 | jz no_sys_on_hd |
61 | mov [hdbase],0x170 |
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62 | mov [hdid],0x10 |
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63 | mov [hdpos],4 |
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64 | mov [fat32part],0 |
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65 | position_4_1: |
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66 | inc [fat32part] |
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67 | call search_and_read_image |
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68 | cmp [image_retrieved],1 |
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69 | je yes_sys_on_hd |
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412 | serge | 70 | movzx eax,byte [DRIVE_DATA+5] |
1 | ha | 71 | cmp eax,[fat32part] |
72 | jle position_4_1 |
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73 | jmp yes_sys_on_hd |
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74 | |||
75 | search_and_read_image: |
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76 | call set_FAT32_variables |
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77 | mov edx, bootpath |
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78 | call read_image |
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79 | test eax, eax |
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80 | jz image_present |
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81 | mov edx, bootpath2 |
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82 | call read_image |
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83 | test eax, eax |
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84 | jz image_present |
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85 | ret |
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86 | image_present: |
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87 | mov [image_retrieved],1 |
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88 | ret |
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89 | |||
90 | read_image: |
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91 | mov eax, hdsysimage |
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92 | mov ebx, 1474560/512 |
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381 | serge | 93 | mov ecx, RAMDISK |
1 | ha | 94 | mov esi, 0 |
95 | mov edi, 12 |
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96 | call file_read |
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381 | serge | 97 | ret |
1 | ha | 98 | |
381 | serge | 99 | image_retrieved db 0 |
1 | ha | 100 | counter_of_partitions db 0 |
101 | no_sys_on_hd: |
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102 | yes_sys_on_hd: |