rdos/nbp.asm

34 lines
517 B
NASM

; assumptions about the starting envionment
cpu 8086
org 0x0000
; es:bx pxeenv+ structure
; ss:sp functional stack
; during PXE, CS=0000 and IP=7C00
_startup:
xor ax, ax
push cx ; byte counter
push si ; source offset
push di ; destination offset
push es ; destination segment
mov ds, ax
mov es, ax
mov si, 0x7C00
mov di, 0x0500
mov cx, (_reloc_end)
rep movsb
pop es
pop di
pop si
pop cx
jmp 0x0050:main
%include "kernel/main.asm"
_reloc_end: