GTIA color defines; added c64 compatibility color defines

git-svn-id: svn://svn.cc65.org/cc65/trunk@94 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/include/atari.h b/include/atari.h
index da4e012f0ce1976a3d7e9500792824973f8d3e99..051d2695084001f5d5eabcc5b27b7bf2a85ae110 100644 (file)
--- a/include/atari.h
+++ b/include/atari.h
@@ -10,10 +10,6 @@
 #ifndef _ATARI_H
 #define _ATARI_H
 
-/* Color Defines */
-#define COLOR_BLACK    0x00
-#define COLOR_WHITE    0x0E
-
 /* Characters codes */
 #define CH_DEL                 0xFE
 #define CH_ESC                 0x1B
@@ -54,6 +50,54 @@
 #define CH_HLINE        0x12
 #define CH_VLINE        0x16
 
+/* color defines */
+
+/* make GTIA color value */
+#define _gtia_mkcolor(hue,lum) (((hue) << 4) | ((lum) << 1))
+
+/* luminance values go from 0 (black) to 7 (white) */
+
+/* hue values */
+#define HUE_GREY        0
+#define HUE_GOLD        1
+#define HUE_GOLDORANGE  2
+#define HUE_REDORANGE   3
+#define HUE_ORANGE      4
+#define HUE_MAGENTA     5
+#define HUE_PURPLE      6
+#define HUE_BLUE        7
+#define HUE_BLUE2       8
+#define HUE_CYAN        9
+#define HUE_BLUEGREEN   10
+#define HUE_BLUEGREEN2  11
+#define HUE_GREEN       12
+#define HUE_YELLOWGREEN 13
+#define HUE_YELLOW      14
+#define HUE_YELLOWRED   15
+
+/* Color defines, similar to c64 colors */
+#define COLOR_BLACK            _gtia_mkcolor(HUE_GREY,0)
+#define COLOR_WHITE            _gtia_mkcolor(HUE_GREY,7)
+#define COLOR_RED              _gtia_mkcolor(HUE_REDORANGE,1)
+#define COLOR_CYAN             _gtia_mkcolor(HUE_CYAN,3)
+#define COLOR_VIOLET           _gtia_mkcolor(HUE_PURPLE,4)
+#define COLOR_GREEN            _gtia_mkcolor(HUE_GREEN,2)
+#define COLOR_BLUE             _gtia_mkcolor(HUE_BLUE,2)
+#define COLOR_YELLOW           _gtia_mkcolor(HUE_YELLOW,7)
+#define COLOR_ORANGE           _gtia_mkcolor(HUE_ORANGE,5)
+#define COLOR_BROWN            _gtia_mkcolor(HUE_YELLOW,2)
+#define COLOR_LIGHTRED         _gtia_mkcolor(HUE_REDORANGE,6)
+#define COLOR_GRAY1            _gtia_mkcolor(HUE_GREY,2)
+#define COLOR_GRAY2            _gtia_mkcolor(HUE_GREY,3)
+#define COLOR_LIGHTGREEN       _gtia_mkcolor(HUE_GREEN,6)
+#define COLOR_LIGHTBLUE        _gtia_mkcolor(HUE_BLUE,6)
+#define COLOR_GRAY3            _gtia_mkcolor(HUE_GREY,5)
+
+/* color register functions */
+extern void __fastcall__ setcolor     (unsigned char color_reg, unsigned char hue, unsigned char luminace);
+extern void __fastcall__ setcolor_low (unsigned char color_reg, unsigned char color_value);
+extern unsigned char  __fastcall__ getcolor (unsigned char color_reg);
+
 /* Define hardware */
 #include <_gtia.h>
 #define GTIA (*(struct __gtia_write*)0xD000)