From 7c870e6eabd53f7a8cb0c9b5ecb477797b4de09a Mon Sep 17 00:00:00 2001
From: Elizabeth Alexander Hunt <me@liz.coffee>
Date: Sun, 11 Oct 2026 14:22:26 -0700
Subject: Scroll some pixels on the fuckin screen

---
 include/io.h    | 13 +++++++++++++
 include/utils.h |  8 +++++---
 include/video.h | 23 +++++++++++++++++++++++
 3 files changed, 41 insertions(+), 3 deletions(-)
 create mode 100644 include/io.h
 create mode 100644 include/video.h

(limited to 'include')

diff --git a/include/io.h b/include/io.h
new file mode 100644
index 0000000..ed71e6f
--- /dev/null
+++ b/include/io.h
@@ -0,0 +1,13 @@
+#include <stdint.h>
+
+#ifndef IO_H
+#define IO_H
+
+uint8_t inportb(uint16_t port);
+void outportb(uint16_t port, uint8_t data);
+void init_serial();
+void serial_putc(char c);
+void serial_puts(const char* s);
+void serial_puthex(uint32_t h);
+
+#endif // IO_H
\ No newline at end of file
diff --git a/include/utils.h b/include/utils.h
index 9ea1f09..beed3cc 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -1,5 +1,7 @@
 #include <stdbool.h>
 
+#define DEBUG 0
+
 #ifndef UTILS_H
 #define UTILS_H
 
@@ -7,7 +9,7 @@
 #define asm __asm__ volatile
 #endif
 
-void macaroni_panic(char* msg);
-void macaroni_assert(bool condition, char* msg);
+void macaroni_panic(const char* msg);
+void macaroni_assert(bool condition, const char* msg);
 
-#endif // UTILS_H
\ No newline at end of file
+#endif // UTILS_H
diff --git a/include/video.h b/include/video.h
new file mode 100644
index 0000000..85a670c
--- /dev/null
+++ b/include/video.h
@@ -0,0 +1,23 @@
+#include <stdint.h>
+#include "multiboot.h"
+
+#ifndef VIDEO_H
+#define VIDEO_H
+
+#define MULTIBOOT_GODS_WIDTH      640
+#define MULTIBOOT_GODS_HEIGHT     480
+#define MULTIBOOT_VIDEO_BPP       24
+
+typedef uint32_t macaroni_color;
+static macaroni_color RED   = 0xFF0000;
+static macaroni_color GREEN = 0x00FF00;
+static macaroni_color BLUE  = 0x0000FF;
+
+static uint8_t* video_framebuffer;
+static uint32_t pitch;
+static uint32_t pixel_width;
+
+void init_video(multiboot_info_t* p_multiboot_info);
+void put_pixel(macaroni_color color, uint16_t x, uint16_t y);
+
+#endif // VIDEO_H
-- 
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