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50 lines
1.3 KiB
50 lines
1.3 KiB
int data_from_disk(index, number_sectors, data_buffer, data_buffer_segment);
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int disk_service_read_data_from_disk(index, number_sectors, data_buffer, data_buffer_segment);
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int disk_service_read_data_from_disk(index, number_sectors, data_buffer, data_buffer_segment)
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long index;
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long number_sectors;
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void* data_buffer;
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unsigned int data_buffer_segment;
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{
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#asm
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#define index 4[bp]; /* Note that this is a 32-bit argument. */
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#define number_sectors 8[bp];
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#define data_buffer 12[bp];
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#define data_buffer_segment 14[bp];
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push bp
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mov bp,sp
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pusha
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lsfs_load_data:
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mov ax, index
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mov WORD [DAPACK.lba_addr_dw_low], ax
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mov bx, number_sectors
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mov WORD [DAPACK.blkcnt], bx
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mov cx, data_buffer_segment
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mov WORD [DAPACK.db_addr_segment], cx
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mov dx, data_buffer;
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mov WORD [DAPACK.db_addr_offset], dx
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mov si, #DAPACK ; address of
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mov ah, #0x42 ; READ
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mov dl, [global_disk_identifier]
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int #0x13
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popa
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pop bp
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ret
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DAPACK:
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DAPACK.dap_Size: db 0x10
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DAPACK.rev_byte: db 0x0
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DAPACK.blkcnt: dw 0x0
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DAPACK.db_addr_offset: dw 0x0
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DAPACK.db_addr_segment: dw 0x0
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DAPACK.lba_addr_dw_low: dd 0x0
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DAPACK.lba_addr_dw_high: dd 0x0
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global_disk_identifier: db 0x80
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#endasm
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}
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