无法让我的 FAT32 引导扇区工作。请帮我。我已经尝试了从查看代码到在 virtualbox 中测试它的所有方法。当我在 virtualbox 中运行它时，我收到此错误：致命：INT18 启动错误。这是代码：
BITS 16
ORG 0x7C00
jmp START
OEM_ID db “PARADIGM"
BytesPerSector dw 0x0200
SectorsPerCluster db 0x08
ReservedSectors dw 0x0021
TotalFATs db 0x02
MaxRootEntries dw 0x0000
TotalSectorsSmall dw 0x0000
MediaDescriptor db 0xF8
SectorsPerTrack dw 0x003F
SectorsPerHead dw 0x0080
HiddenSectors dd 0x0000003F
TotalSectorsBig dd 0x0040994
BigSectorsPerFAT dd 0x00000778
SectorsPerFAT dd 0x0000101F
Flags dw 0x0000
FSVersion dw 0x0000
RootDirectoryStart dd 0x00000002
FSInfoSector dw 0x0001
BackupBootSector dw 0x0006
times 13 db 0x00
DriveNumber db 0x00
db 0x00
Signature db 0x29
VolumeID dd 0x1F040FD5
VolumeLabel db "PARADIGM_BOOT"
SystemID db "FAT32"
START:
cli
mov ax, 0x0000
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
mov ax, 0x0000
mov ss, ax
mov sp, 0x0000
sti
mov si, msgLoading
call DisplayMessage
mov cx, WORD[SectorsPerCluster]
xor ax, ax
mov al, BYTE [TotalFATs]
mul WORD[BigSectorsPerFAT]
add ax, WORD [ReservedSectors]
mov WORD [datasector], ax
xor ax, ax
mov ax, WORD [RootDirectoryStart]
call ClusterLBA
mov bx, 0x0200
call ReadSectors
mov cx, WORD [0x0080]
mov di, 0x0200
.LOOP:
push cx
mov cx, 0x000C
mov si, ImageName
push di
rep cmpsb
pop di
je LOAD_FILE
pop cx
add di, 0x0020
loop .LOOP
jmp FAILURE
LOAD_FILE:
mov si, msgCRLF
call DisplayMessage
mov dx, WORD [di + 0x001A]
mov WORD [cluster], dx
mov ax, 0x0100
mov es, ax
mov bx, 0
xor cx, cx
mov cl, BYTE[SectorsPerCluster]
mov ax, WORD[cluster]
call ClusterLBA
call ReadSectors
jmp DONE
DONE:
mov si, msgCRLF
call DisplayMessage
push WORD 0x0200
push WORD 0x0000
retf
FAILURE:
mov si, msgFailure
call DisplayMessage
mov ah, 0x00
int 0x16
int 0x19
DisplayMessage:
lodsb
or al, al
jz .DONE
mov ah, 0x0E
mov bh, 0x00
mov bl, 0x07
int 0x10
jmp DisplayMessage
.DONE:
ret
ReadSectors:
.MAIN:
mov di, 5
.SECTORLOOP:
push ax
push bx
push cx
call LBACHS
mov ah, 0x02
mov al, 0x01
mov ch, BYTE [absoluteTrack]
mov cl, BYTE [absoluteSector]
mov dh, BYTE [absoluteHead]
mov dl, BYTE [DriveNumber]
int 0x13
jnc .SUCCESS
xor ax, ax
int 0x13
dec di
pop cx
pop bx
pop ax
jnz .SECTORLOOP
int 0x18
.SUCCESS:
mov si, msgProgress
call DisplayMessage
pop cx
pop bx
pop ax
add bx, WORD [BytesPerSector]
inc ax
loop .MAIN
ret
ClusterLBA:
sub ax, 0x0002
xor cx, cx
mov cl, BYTE [SectorsPerCluster]
mul cx
add ax, WORD [datasector]
ret
LBACHS:
xor dx, dx
div WORD [SectorsPerTrack]
inc dl
mov BYTE [absoluteSector], dl
xor dx, dx
div WORD [SectorsPerHead]
mov BYTE [absoluteHead], dl
mov BYTE [absoluteTrack], al
ret
absoluteSector db 0x00
absoluteHead db 0x00
absoluteTrack db 0x00
datasector dw 0x0000
cluster dw 0x0000
ImageName dw "BOOTLOAD.BIN"
msgLoading db 0x0D, 0x0A, "Loading Boot Image", 0x0D, 0x0A, 0x00
msgCRLF db 0x0D, 0x0A, 0x00
msgProgress db ".", 0x00
msgFailure db 0x0D, 0x0A, "ERROR: Press Any Key to Reboot", 0x00
times 510-($-$$) db 0
dw 0xAA55´
我正在使用 iso 规范。似乎它没有正确读取扇区。我从Amila Surendra那里得到了代码