X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=boot%2Fboot2.asm;h=c90cef6d5b65786af79743fb92cc48c93ee040d7;hb=be7535b3af9d7ecc5581a7b3d325f5caec87b24f;hp=6837579d78c9e9540265a6ad2ebd0e551ab333a3;hpb=06692d6c927aae4e6f06efd1e401d005839c1e5f;p=eightysix

diff --git a/boot/boot2.asm b/boot/boot2.asm
index 6837579..c90cef6 100644
--- a/boot/boot2.asm
+++ b/boot/boot2.asm
@@ -4,15 +4,25 @@
 	section .startup
 
 extern bootmain
+extern _stage2_start_seg
+extern _bss_start_off
+extern _bss_size
 
 global _start
 _start:
 	; TODO floppy off if necessary
-	; TODO zero .bss
+
+	; zero .bss
+	mov di, _bss_start_off
+	mov cx, _bss_size
+	shr cx, 1
+	rep stosw
+	xor ax, ax
+	mov es, ax
+
 	call bootmain
 
 hang:	hlt
 	jmp hang
 
-
 ; vi:set ts=8 sts=8 sw=8 ft=nasm: