diff --git a/readfloppy.asm b/readfloppy.asm
index e8b3da3..3149ed2 100644
--- a/readfloppy.asm
+++ b/readfloppy.asm
@@ -14,11 +14,11 @@ mov es, dx          ; es = 0
 mov bx, 0xf000      ; store the read sector there
 mov ax, 0x0201      ; read, 1 sector
 
-; params: head, cylinder, sector, out
+; params: cylinder, head, sector, out
 mov si, [bp+14]
-mov dh, [si]
-mov si, [bp+12]
 mov ch, [si]
+mov si, [bp+12]
+mov dh, [si]
 mov si, [bp+10]
 mov cl, [si]
 
diff --git a/writefloppy.asm b/writefloppy.asm
index 48150bb..b0e43df 100644
--- a/writefloppy.asm
+++ b/writefloppy.asm
@@ -14,11 +14,11 @@ mov es, dx          ; es = 0
 mov bx, 0xf000      ; store the read sector there
 mov ax, 0x0301      ; write, 1 sector
 
-; params: head, cylinder, sector, out
+; params: cylinder, head, sector, out
 mov si, [bp+14]
-mov dh, [si]
-mov si, [bp+12]
 mov ch, [si]
+mov si, [bp+12]
+mov dh, [si]
 mov si, [bp+10]
 mov cl, [si]