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Rev | Author | Line No. | Line |
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425 | victor | 1 | $Revision: 425 $ |
1 | ha | 2 | ; READ RAMDISK IMAGE FROM HD |
3 | |||
4 | cmp [boot_dev],1 |
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5 | jne no_sys_on_hd |
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6 | |||
412 | serge | 7 | test [DRIVE_DATA+1],byte 0x40 |
1 | ha | 8 | jz position_2 |
9 | mov [hdbase],0x1f0 |
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10 | mov [hdid],0x0 |
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11 | mov [hdpos],1 |
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12 | mov [fat32part],0 |
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13 | position_1_1: |
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14 | inc [fat32part] |
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15 | call search_and_read_image |
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16 | cmp [image_retrieved],1 |
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17 | je yes_sys_on_hd |
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412 | serge | 18 | movzx eax,byte [DRIVE_DATA+2] |
1 | ha | 19 | cmp [fat32part],eax |
20 | jle position_1_1 |
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21 | position_2: |
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412 | serge | 22 | test [DRIVE_DATA+1],byte 0x10 |
1 | ha | 23 | jz position_3 |
24 | mov [hdbase],0x1f0 |
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25 | mov [hdid],0x10 |
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26 | mov [hdpos],2 |
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27 | mov [fat32part],0 |
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28 | position_2_1: |
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29 | inc [fat32part] |
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30 | call search_and_read_image |
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31 | cmp [image_retrieved],1 |
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32 | je yes_sys_on_hd |
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412 | serge | 33 | movzx eax,byte [DRIVE_DATA+3] |
1 | ha | 34 | cmp eax,[fat32part] |
35 | jle position_2_1 |
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36 | position_3: |
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412 | serge | 37 | test [DRIVE_DATA+1],byte 0x4 |
1 | ha | 38 | jz position_4 |
39 | mov [hdbase],0x170 |
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40 | mov [hdid],0x0 |
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41 | mov [hdpos],3 |
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42 | mov [fat32part],0 |
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43 | position_3_1: |
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44 | inc [fat32part] |
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45 | call search_and_read_image |
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46 | cmp [image_retrieved],1 |
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47 | je yes_sys_on_hd |
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412 | serge | 48 | movzx eax,byte [DRIVE_DATA+4] |
1 | ha | 49 | cmp eax,[fat32part] |
50 | jle position_3_1 |
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51 | position_4: |
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412 | serge | 52 | test [DRIVE_DATA+1],byte 0x1 |
1 | ha | 53 | jz no_sys_on_hd |
54 | mov [hdbase],0x170 |
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55 | mov [hdid],0x10 |
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56 | mov [hdpos],4 |
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57 | mov [fat32part],0 |
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58 | position_4_1: |
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59 | inc [fat32part] |
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60 | call search_and_read_image |
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61 | cmp [image_retrieved],1 |
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62 | je yes_sys_on_hd |
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412 | serge | 63 | movzx eax,byte [DRIVE_DATA+5] |
1 | ha | 64 | cmp eax,[fat32part] |
65 | jle position_4_1 |
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66 | jmp yes_sys_on_hd |
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67 | |||
68 | search_and_read_image: |
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69 | call set_FAT32_variables |
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70 | mov edx, bootpath |
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71 | call read_image |
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72 | test eax, eax |
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73 | jz image_present |
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74 | mov edx, bootpath2 |
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75 | call read_image |
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76 | test eax, eax |
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77 | jz image_present |
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78 | ret |
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79 | image_present: |
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80 | mov [image_retrieved],1 |
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81 | ret |
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82 | |||
83 | read_image: |
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84 | mov eax, hdsysimage |
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85 | mov ebx, 1474560/512 |
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381 | serge | 86 | mov ecx, RAMDISK |
1 | ha | 87 | mov esi, 0 |
88 | mov edi, 12 |
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89 | call file_read |
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381 | serge | 90 | ret |
1 | ha | 91 | |
381 | serge | 92 | image_retrieved db 0 |
1 | ha | 93 | counter_of_partitions db 0 |
94 | no_sys_on_hd: |
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95 | yes_sys_on_hd: |