Started with font rendering

cvideo.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <stdint.h>
+
+// ---------------------------
+// Video format
+// ---------------------------
+#define VIDEO_WIDTH      768
+#define VIDEO_HEIGHT     576
+#define WORDS_PER_LINE   (VIDEO_WIDTH / 32)
+#define LINES_PER_FIELD  (VIDEO_HEIGHT / 2)
+
+typedef uint32_t video_framebuffer_t[VIDEO_HEIGHT][WORDS_PER_LINE];
+typedef uint32_t (*video_framebuffer_ptr_t)[WORDS_PER_LINE];
+
+void video_init(video_framebuffer_t fb);
+void video_set_framebuffer(video_framebuffer_t fb);
+void video_set_framebuffer_switched_cb(void (*cb)());