From d98786072cd74068fd993ef112ab22999f39324a Mon Sep 17 00:00:00 2001
From: Elaina Claus <elaina.claus@chtm.me>
Date: Fri, 18 Oct 2024 07:58:40 -0400
Subject: [PATCH] use movzx instead of goofy mov word and and mask the upper
 bits

---
 src/stage2/stage2.nasm | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/stage2/stage2.nasm b/src/stage2/stage2.nasm
index 7a47fda..dbe80d8 100755
--- a/src/stage2/stage2.nasm
+++ b/src/stage2/stage2.nasm
@@ -235,10 +235,7 @@ ALIGN 4, db 0x90
 PrintCharacter:
     __CDECL16_ENTRY
 .func:
-    mov ax, [bp + 4] ; c
-    mov dx, 0x00ff
-    and ax, dx
-
+    movzx ax, byte [bp + 4]     ; AL = character c
     mov ah, 0x0E                ; INT 0x10, AH=0x0E call
     mov bx, 0x0007              ; BH = page no. BL =Text attribute 0x07 is lightgrey font on black background
     int 0x10                    ; call video interrupt