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- int disk_service_read_data_from_disk(index, file_block_size, data_buffer, data_buffer_segment)
- long* index;
- long file_block_size;
- void* data_buffer;
- int data_buffer_segment;
- {
- //fseek ( disk, (index * SECTOR_SIZE ), SEEK_SET ); // SEEK_SET start offset at index 0 and move 1 * SECTOR_SIZE, and write here.
- //int read = fread(data_buffer, 1, (file_block_size * SECTOR_SIZE), disk);
- //return read;
- #asm
- lsfs_load_data:
- mov dl, [global_disk_identifier]
- mov WORD [DAPACK.lba_addr_dw_low], ax
- mov WORD [DAPACK.blkcnt], 0x01
- mov WORD [DAPACK.db_addr_segment], bx
- mov WORD [DAPACK.db_addr_offset], FSCI
- mov si, DAPACK ; address of "disk address packet"
- mov ah, 0x42 ; READ
- mov dl, [global_disk_identifier]
- int 0x13
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- DAPACK:
- .dap_Size: db 0x10 ; This is always 16 bytes (0x10)
- .rev_byte: db 0x0 ; reserved byte, should always be zero
- .blkcnt: dw 0x0 ; int 13 resets this to # of blocks actually read/written
- .db_addr_offset: dw 0x0 ; memory buffer destination address (0:7c00)
- .db_addr_segment: dw 0x0 ; in memory page zero
- .lba_addr_dw_low: dd 0x0 ; put the lba to read in this spot
- .lba_addr_dw_high: dd 0x0 ; more storage bytes only for big lba's ( > 4 bytes )
- #endasm
-
- }
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