Hey, you have already got the answer through your mindand the program wich is loaded is this i don't think the ORG directive is correct
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[ORG 0x0000]Good work man! Go onI am making progress i succeded in loading the other program from the sector 2 and load it
Seriously, you've no idea how 'Real Mode' addressing works. You really need to read docs on x86 architecture.i don't think the ORG directive is correct but what should i put there if it's loaded at 0x1000:0x0000 ?
Tried that doesn't work though maybe some other registers need to be initializedberkus wrote:Probably need to call windows mbr exactly in a state it expects from BIOS (e.g. boot drive in DL)
maybe you need to:Tried that doesn't work though maybe some other registers need to be initialized
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xor bx, bx
mov es, bx
mov ds, bx
mov dl, 0x80
jmp 0x0000:0x7C00
if you give me your e-mail address i will provide you the source to try to fix it if you have time. Or maybe this error is caused by vmware ? I really don't have a clue...Why not attach directly to this thread?opc0de wrote:if you give me your e-mail address i will provide you the source
I think it is better to post your source code here in this thread to allow all of us to help youopc0de wrote:Nope it doesn't work
at all it is up to you! if you want to send me the code you can send it in a message through your User Control Panel here in OSDev, my username is: mostafazizo.Code: Select all
[BITS 16]
[ORG 0x7C00]
main:
cli
xor bx,bx
mov es,bx
mov fs,bx
mov gs,bx
mov ds,bx
mov ss,bx
mov sp,0x7C00
sti
MOV SI, Hello
CALL PrintString
MOV AH,0x03
MOV BH,0x00
INT 0x10
ADD DH,2
XOR DL,DL
MOV AH,0x02
XOR BH,BH
INT 0x10
XOR BX,BX
ReadPass:
MOV AH,0x00
INT 0x16
CMP AL,13
JE Verify
MOV [read+BX],AL
PUSH BX
CALL PrintChar
POP BX
INC BX
CMP BX,6
JE Verify
JMP ReadPass
Verify:
MOV SI,read
MOV DI,pass
MOV CX,6
REP CMPSB
JNE the_end
Done:
MOV SI,succ
call PrintString
MOV AH,0x02
MOV AL,1
MOV CH,0
MOV CL,2
MOV DX,0x0080
MOV BX,1000h
MOV ES, BX
XOR BX,BX
INT 13h
CMP AH,0
JNE Done
jmp 0x1000:0x0000
the_end:
INT 0x19
PrintChar:
MOV AH,0x0E
MOV BH,0x04
MOV BL,0x10
INT 0x10
RET
PrintString:
MOV AL,[SI]
CMP AL,0
JE theret
INC SI
CALL PrintChar
JMP PrintString
theret:
ret
pass db 'MUKMIK',0
read times 7 db 0
succ db 'Success booting...',0
Hello db 'Enter password',0
times 510 - ($ - $$) DB 0
dw 0xAA55
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[BITS 16]
[ORG 0x0000]
Start:
MOV AH,0x02
MOV AL,1
MOV CH,0
MOV CL,4
MOV DX,0x0080
MOV BX,0x0000
MOV ES,BX
MOV BX,0x7C00
INT 13h
CMP AH,0
JNE Fail
cli
xor bx,bx
mov es,bx
mov fs,bx
mov gs,bx
mov dl,0x80
mov ds,bx
mov ss,bx
mov sp,0x7C00
sti
JMP 0x0000:0x7C00
Fail:
INT 0x19
times 512 - ($ - $$) DB 0You are way offtopic read something about MBR to refresh your memory...berkus wrote:No, usually entire first track is reserved (partitions start on track boundary).
I didn't find anything off-topic.opc0de wrote:You are way offtopic read something about MBR to refresh your memory...berkus wrote:No, usually entire first track is reserved (partitions start on track boundary).
It has been implemented before and should work if i use the original mbr what it has to do with the first track...anyway maybe i don't get it but if others used the same method and worked it should work for me but it's a mistake in the code.if you find it i owe you a pack of beer.cheersChandra wrote:I didn't find anything off-topic.opc0de wrote:You are way offtopic read something about MBR to refresh your memory...berkus wrote:No, usually entire first track is reserved (partitions start on track boundary).