Moved vga-palette-updating code to func vga_setPalette()

doc/files.md

@@ -6,8 +6,8 @@ code.
 File              | Description
 ------------------|------------------------------------------------------------
 main.c            | The entry point, initialises everything
-vga.h             | Function prototypes for initing / deiniting vga mode 13h
-vga.c             | Functions for initing / deiniting vga mode 13h
+vga.h             | Function prototypes for vga mode 13h
+vga.c             | Functions for vga mode 13h
 palette.h         | Function prototypes for palette handling
 palette.c         | Functions for palette handling
 package.h         | Function prototypes for creating package

src/palette.c

@@ -9,6 +9,7 @@
 #include <pc.h>
 
 #include "palette.h"
+#include "vga.h"
 
 #define MAX_IDX   256
 #define MAP_SIZE  1024
@@ -75,11 +76,8 @@ int palette_colorToIdx(int r, int g, int b) {
   /* Update internal palette table */
   palette_palette[idx] = color;
 
-  /* Update system palette (18bit; 6bit per-channel) */
-  outp(0x03c8, idx);
-  outp(0x03c9, (color >>  2) & 0x3f); /* r */
-  outp(0x03c9, (color >> 10) & 0x3f); /* g */
-  outp(0x03c9, (color >> 18) & 0x3f); /* b */
+  /* Update system palette */
+  vga_setPalette(idx, r, g, b);
 
   /* Add to hashmap and return idx */
   palette_map[i].color = color;

src/vga.c

@@ -34,6 +34,14 @@ void vga_deinit(void) {
 }
 
 
+void vga_setPalette(int idx, int r, int g, int b) {
+  outp(0x03c8, idx);
+  outp(0x03c9, (r >> 2) & 0x3f);
+  outp(0x03c9, (g >> 2) & 0x3f);
+  outp(0x03c9, (b >> 2) & 0x3f);
+}
+
+
 void vga_update(pixel_t *buffer) {
   dosmemput(buffer, VGA_WIDTH * VGA_HEIGHT, 0xa0000);
 }

src/vga.h

@@ -15,6 +15,7 @@ typedef unsigned char pixel_t;
 
 void vga_init(void);
 void vga_deinit(void);
+void vga_setPalette(int idx, int r, int g, int b);
 void vga_update(pixel_t *buffer);
 
 #endif