Bootloader help

[quanganht]

Need help!

This is my bootloader code

Code: Select all

BITS 16
ORG 0x7C00

start:
	XOR AX, AX
   	MOV DS, AX
	
	MOV [bsDriveNumber], DL

	PUSHA
	MOV SI, loadmsg
	CALL print
	POPA

	MOV AX, 0x1000
        MOV ES, AX
	MOV BX, 0
	
	MOV AH, 0x02
	MOV AL, 0x01

        MOV DL, [bsDriveNumber]
        MOV DH, 0
        MOV CH, 0
        MOV CL, 2

        INT 0x13

	JC err

	MOV SI,donemsg
	CALL print

	MOV DL, [bsDriveNumber]

        JMP 0x1000:0000
err:
	MOV SI, errmsg
	CALL print

hang:
	JMP hang

print:
   	LODSB
   	OR AL, AL
  	JZ done
   	MOV AH, 0x0E
	INT 0x10
   	JMP print
done:
	RET


msg  DB  "No kernel ...", 0
errmsg  DB  "Error in reading 2nd sector ...", 0
loadmsg  DB  "Loading sector 2 ...",13,10, 0
donemsg  DB  "Done loading sector 2 ...",13,10, 0
bsDriveNumber 	DB 0

	TIMES 510-($-$$) db 0
	DB 0x55
	DB 0xAA

And this is kernel code:

Code: Select all

BITS 16

start:
	MOV AX, 0x7C0
        MOV ES, AX
        MOV FS, AX

	CALL Clrscr

hang:
	jmp hang

Clrscr:
	MOV AX, 0x0600
	MOV BH,0x07
        MOV CX,0x0000
       	MOV DX,0x184f
       	INT 10h
	RET

SEGMENT .data
ALIGN 4

msg  DB  "Kernel is running...", 0

I compile them and 'cat' them into one file, which is the floppy image. But it seems like the kernel won't be executed.

[Combuster]

Ask smart questions, don't hijack an existing unrelated thread, and search before posting. There are too many issues with that code that have been mentioned a hundred times before.