From 2e29342c834e8fdfd500046e9b32de806ce68d10 Mon Sep 17 00:00:00 2001
From: Martin Petr <martinpetrnp@gmail.com>
Date: Wed, 19 Nov 2025 22:17:52 +0100
Subject: [PATCH] Add ports

---
 src/kernel/kernel.c              | 39 ++++++++++++++++++++++++++++++++
 src/os/src/kernel/index.ts       |  9 +-------
 src/os/src/types/c/bindings.d.ts |  2 ++
 3 files changed, 42 insertions(+), 8 deletions(-)

diff --git a/src/kernel/kernel.c b/src/kernel/kernel.c
index 997142f..a69d4fb 100644
--- a/src/kernel/kernel.c
+++ b/src/kernel/kernel.c
@@ -25,6 +25,37 @@ duk_ret_t native_addrw(duk_context *ctx)
   return 0;
 }
 
+// Port byte in
+duk_ret_t native_ptin(duk_context *ctx)
+{
+  // Get the port (first argument)
+  uint16_t port = (uint16_t)duk_to_uint32(ctx, 0);
+
+  uint8_t result;
+  __asm__ volatile("inb %1, %0"
+                   : "=a"(result)
+                   : "Nd"(port));
+
+  duk_push_uint(ctx, (duk_uint_t)result);
+  return 1;
+}
+
+// Port byte out
+duk_ret_t native_ptout(duk_context *ctx)
+{
+  // Get the port (first argument)
+  uint16_t port = (uint16_t)duk_to_uint32(ctx, 0);
+
+  // Get the value to write (second argument)
+  uint8_t value = (uint8_t)duk_to_uint32(ctx, 1);
+
+  __asm__ volatile("outb %0, %1"
+                   :
+                   : "a"(value), "Nd"(port));
+
+  return 0;
+}
+
 void kmain()
 {
   // Initialize Duktape heap
@@ -34,6 +65,14 @@ void kmain()
   duk_push_c_function(ctx, native_addrw, 2);
   duk_put_global_string(ctx, "$addrw");
 
+  // Register native port in function
+  duk_push_c_function(ctx, native_ptin, 1);
+  duk_put_global_string(ctx, "$ptin");
+
+  // Register native port out function
+  duk_push_c_function(ctx, native_ptout, 2);
+  duk_put_global_string(ctx, "$ptout");
+
   // Execute embedded JavaScript code from build/index.js
   duk_push_string(ctx, embedded_js_code);
   duk_int_t returnCode = duk_peval(ctx);
diff --git a/src/os/src/kernel/index.ts b/src/os/src/kernel/index.ts
index 667e204..fc7dd6a 100644
--- a/src/os/src/kernel/index.ts
+++ b/src/os/src/kernel/index.ts
@@ -6,12 +6,5 @@ import {
 
 export function kmain() {
   kmod_graphics_vga_init();
-
-  globalThis.console = {
-    log: function (msg: string) {
-      kmod_graphics_vga_pushLine(String(msg));
-    },
-  } as any;
-
-  eval("console.log('TS-DOS Program Started!!');");
+  kmod_graphics_vga_pushLine("[Kernel] Kernel initialized successfully.");
 }
diff --git a/src/os/src/types/c/bindings.d.ts b/src/os/src/types/c/bindings.d.ts
index 4e2e3cb..6f38631 100644
--- a/src/os/src/types/c/bindings.d.ts
+++ b/src/os/src/types/c/bindings.d.ts
@@ -1 +1,3 @@
 declare function $addrw(address: number, value: number): void;
+declare function $ptin(port: number): number;
+declare function $ptout(port: number, value: number): void;