Don't depend on dx being 0 in modify_sector

2023-03-23 00:07:12 +02:00 · 2023-03-23 00:07:12 +02:00 · ebf106dcc4
parent 5df22c3912
commit ebf106dcc4
1 changed files with 4 additions and 4 deletions
--- a/ponydos.asm
+++ b/ponydos.asm
@ -283,11 +283,11 @@ modify_sectors:
 modify_sector:
 	pusha

-	mov cx, 18
-	div cx
+	mov cl, 18
+	div cl

 	; cl = sector (1…18)
-	mov cl, dl
+	mov cl, ah
 	inc cl

 	; dh = head (0…1)
@ -295,7 +295,7 @@ modify_sector:
 	and dh, al

 	; ch = cylinder
-	shr ax, 1
+	shr al, 1
 	mov ch, al

 	; dl = drive number