jmp 0x0050:clear_pipe
but bochs keeps giving me an error
3rd (13) exception with no resolution. I'll post the code with some modifications to shorten it.
Code: Select all
[BITS 16] ;16 bit code generation
[ORG 0x0000]
START:
;Adjust segments
cli
mov ax, 0x0050
mov es, ax
mov ds, ax
mov fs, ax
mov gs, ax
;Print status message
mov si, msgLoading
call WriteMessage
;Check for compatible processor
call detect_cpu
;Enable A20 Line
call enableA20
;Enter protected mode
cli ; Disable interrupts, we want to be alone
xor ax, ax
mov ds, ax ; Set DS-register to 0 - used by lgdt
lgdt [gdt_desc] ; Load the GDT descriptor
mov eax, cr0 ; Copy the contents of CR0 into EAX
or eax, 1 ; Set bit 0
mov cr0, eax ; Copy the contents of EAX into CR0
;Far jump to 32 bit code
jmp 0x0050:clear_pipe
;********************Check CPU for 386 or higher************************
detect_cpu:
;Omitted
;**********************Enable A20 Line*******************************
enableA20:
;Omitted
;**********************Message Procedure*****************************
;Omitted
;*************************Protected Mode Code************************
[BITS 32] ; We now need 32-bit instructions
clear_pipe:
jmp $
mov ax, 10h ; Save data segment identifyer
mov ds, ax ; Move a valid data segment into the data segment register
mov ss, ax ; Move a valid data segment into the stack segment register
mov esp, 090000h ; Move the stack pointer to 090000h
mov byte [ds:0B8000h], 'P' ; Move the ASCII-code of 'P' into first video memory
mov byte [ds:0B8001h], 1Bh ; Assign a color code
hang:
jmp hang ; Loop, self-jump
;**********************Global Descriptor Table***********************
;Omitted
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