From 06cb46aa0236352554f23697e17bed378083be1a Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Mon, 9 Nov 2026 03:22:35 +0800
Subject: [mubios] Initialize VGA mode and serial BIOS services

---
 mubios/services/int10.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'mubios/services/int10.c')

diff --git a/mubios/services/int10.c b/mubios/services/int10.c
index 6793c40..4f6aef1 100644
--- a/mubios/services/int10.c
+++ b/mubios/services/int10.c
@@ -63,6 +63,20 @@ int10_service (struct bios_regs *regs)
   function = (u8)(regs->eax >> 8);
   page = (u8)(regs->ebx >> 8);
 
+  if (function == 0x00u)
+    {
+      if ((u8)regs->eax == 0x03u)
+        vga_text_mode_init ();
+      return;
+    }
+
+  if (function == 0x0Fu)
+    {
+      regs->eax = (regs->eax & 0xFFFF0000u) | 0x5003u;
+      regs->ebx &= 0xFFFF00FFu;
+      return;
+    }
+
   if (function == 0x02u)
     {
       cursor = int10_cursor_for_page (page);
-- 
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