rdos/boot/pxeboot.asm

org 0x7C00

main:
	mov ax, [es:bx+0x0A]
	mov [cs:pxejmp], ax
	mov ax, [es:bx+0x0A+2]
	mov [cs:pxejmp+2], ax

        mov ax, cs
        mov ds, ax
        mov si, pxejmp
        call dump

	mov ax, cs
	mov ds, ax
	mov di, pxestat
	mov bx, 0x0071

	call UsePXEAPI

	mov ax, cs
	mov ds, ax
	mov si, pxestat
	call dump
	call dump

hlt:	hlt
	jmp hlt

UsePXEAPI:
	push ds
	push di
	push bx
	int 3
	call far [pxejmp]
	int 3
	add sp, 6
	ret

pxejmp: dd 0

pxestat:
    .Status       dw 0
    .PacketType   dw 2
    .BufferSize   dw 0
       .BufferOff dw 0
       .BufferSeg dw 0
    .BufferLimit  dw 0

;tftp_open:
;    .Status       dw 0
;    .SIP          dd 0
;    .GIP          dd 0
;    .Filename     db "pxe.bs"
;		  times (128-6) db 0
;    .Port         dw 0
;    .PacketSize   dw 0

space:
	mov al, 0x20
	jmp putc
putbc:
	cmp al, 0x80
	jnc dot
	cmp al, 0x20
	jnc putc
dot:
        mov al, '.'
putc:
	push ax
	push bx
	mov ah, 0x0e
	xor bx, bx
	int 0x10
	pop bx
	pop ax
	ret

dump:	push cx
	mov ax, ds
	call print16
	mov al, ':'
	call putc
	mov ax, si
	call print16
	call space
	call space

	mov cx, 0x08
	push si
.hloop:	lodsb
	call print8
	lodsb
	call print8
	call space
	loop .hloop
	pop si
	call space

	mov cx, 0x10
.aloop: lodsb
	call putbc
	loop .aloop

	mov al, 0x0A
	call putc
	mov al, 0x0D
	call putc
	pop cx
	ret

%include "print.asm"
%include "printf.asm"