forked from KolibriOS/kolibrios
95 lines
2.5 KiB
PHP
95 lines
2.5 KiB
PHP
; READ RAMDISK IMAGE FROM HD
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cmp [boot_dev+OS_BASE+0x10000],1
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jne no_sys_on_hd
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test [DRIVE_DATA+1],byte 0x40
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jz position_2
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mov [hdbase],0x1f0
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mov [hdid],0x0
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mov [hdpos],1
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mov [fat32part],0
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position_1_1:
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inc [fat32part]
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call search_and_read_image
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cmp [image_retrieved],1
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je yes_sys_on_hd
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movzx eax,byte [DRIVE_DATA+2]
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cmp [fat32part],eax
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jle position_1_1
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position_2:
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test [DRIVE_DATA+1],byte 0x10
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jz position_3
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mov [hdbase],0x1f0
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mov [hdid],0x10
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mov [hdpos],2
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mov [fat32part],0
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position_2_1:
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inc [fat32part]
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call search_and_read_image
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cmp [image_retrieved],1
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je yes_sys_on_hd
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movzx eax,byte [DRIVE_DATA+3]
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cmp eax,[fat32part]
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jle position_2_1
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position_3:
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test [DRIVE_DATA+1],byte 0x4
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jz position_4
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mov [hdbase],0x170
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mov [hdid],0x0
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mov [hdpos],3
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mov [fat32part],0
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position_3_1:
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inc [fat32part]
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call search_and_read_image
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cmp [image_retrieved],1
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je yes_sys_on_hd
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movzx eax,byte [DRIVE_DATA+4]
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cmp eax,[fat32part]
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jle position_3_1
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position_4:
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test [DRIVE_DATA+1],byte 0x1
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jz no_sys_on_hd
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mov [hdbase],0x170
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mov [hdid],0x10
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mov [hdpos],4
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mov [fat32part],0
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position_4_1:
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inc [fat32part]
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call search_and_read_image
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cmp [image_retrieved],1
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je yes_sys_on_hd
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movzx eax,byte [DRIVE_DATA+5]
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cmp eax,[fat32part]
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jle position_4_1
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jmp yes_sys_on_hd
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search_and_read_image:
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call set_FAT32_variables
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mov edx, bootpath
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call read_image
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test eax, eax
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jz image_present
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mov edx, bootpath2
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call read_image
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test eax, eax
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jz image_present
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ret
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image_present:
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mov [image_retrieved],1
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ret
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read_image:
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mov eax, hdsysimage+OS_BASE+0x10000
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mov ebx, 1474560/512
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mov ecx, RAMDISK
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mov esi, 0
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mov edi, 12
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call file_read
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ret
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image_retrieved db 0
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counter_of_partitions db 0
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no_sys_on_hd:
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yes_sys_on_hd:
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