Assemble at 7c00h.

diff --git a/pyrit.asm b/pyrit.asm
index 603d8da..edfab47 100644 (file)
--- a/pyrit.asm
+++ b/pyrit.asm
@@ -12,7 +12,17 @@
 ; In memory it looks like {Z X Y}, which saves a displacement byte.
 ; (u'v) is the dot product: ux*vx + uy*vy + uz*vz.
 
-org 100h ; assume al=0 bx=0 sp=di=-2 si=0100h bp=09??h
+        org 0x7c00
+        xor ax,ax
+        xor bx,bx
+        mov cx,0ffh
+        mov di,-2
+;        mov ss,dx
+        mov sp,di
+        mov si,100h
+        mov bp,091ch
+
+; assume al=0 bx=0 sp=di=-2 si=0100h bp=09??h
 
 ;Set video mode and earth+sky palette
   dec di       ; u16[100h] = -20401, u16[10Ch] = -30515
@@ -242,3 +252,6 @@ B:
   mov [di],ah     ; pushed al = tex*y
 
 E:ret
+
+        times 510-($-$$) db 0
+        db 0x55,0xaa