assembly
Hallo, in Asm I have a problem reading from the disk , the file is on the disk built cant read it .
File : Readdsik.asm
ReadDisk:
mov ah, 0x02 ; Read disk
mov bx, PROGRAM_SPACE ; Set disk info into PROGRAM_SPACE
mov al, 4
mov dl, [BOOT_DISK]
mov ch, 0x00
mov dh, 0x00
mov cl, 0x02 ; Read Sector 2
int 0x13
file on the disk: Extend.asm
[org 0x7e00]
mov bx, ExetendspacheSpaceSucess
call PrintString
jmp $
%include "print.asm"
ExetendspacheSpaceSucess:
db 'We are seccessfully in extended space' , 0
times 2048-($-$$) db 0
Last Comment
ASKER
I am, running it on a virtual computer, X86, the solution the I am building a own kernel on a disk.
Using assembler to compile and build.
-Programs :
Notepad
nasm
virtual box
in the bootloader.asm
Using assembler to compile and build.
-Programs :
Notepad
nasm
virtual box
in the bootloader.asm
[org 0x7c00]
mov [BOOT_DISK] , dl
mov bp, 0x7c00
mov sp, bp
mov bx, Print_text
call PrintString
call ReadDisk
mov ah, 0x0e
mov al, [PROGRAM_SPACE]
int 0x10
jmp $
%include "print.asm"
%include "Diskread.asm"
times 510-($-$$) db 0
dw 0xaa55
ASKER
I sloft i my self < joehoe >
bootloader.asm
bootloader.asm
[org 0x7c00]
mov [BOOT_DISK] , dl ; load program disk nummer into the system
mov bp, 0x7c00
mov sp , bp
mov bx, TestString
call PrintString
call ReadDisk
mov ah, 0x0e
mov al, [PROGRAM_SPACE]
int 0x10
jmp $
%include "print.asm"
%include "Diskread.asm"
times 510-($-$$) db 0
dw 0x55aa
PROGRAM_SPACE equ 0x7e00
ReadDisk:
mov ah, 0x02 ; Set bios funcion read disk
mov bx, PROGRAM_SPACE
mov al, 2 ; read 2000byts
mov dl, [BOOT_DISK] ; from whits disk need to by read from
mov ch, 0x00 ; set the cilinder data to 0
mov dh, 0x00 ; set head from the disk
mov cl, 0x02 ; read sectror 2
int 0x13 ; BIOS read interupt.
jc DiskReadFaild
ret
BOOT_DISK:
db 0
DiskReadErrorString:
db 'Disk read Faild', 0
DiskReadFaild:
mov bx, DiskReadErrorString
call PrintString
jmp $
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