summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/video/centiped.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/video/centiped.c')
-rw-r--r--src/mame/video/centiped.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/src/mame/video/centiped.c b/src/mame/video/centiped.c
index b0489694ff4..d4e13bfaea0 100644
--- a/src/mame/video/centiped.c
+++ b/src/mame/video/centiped.c
@@ -368,6 +368,36 @@ WRITE8_HANDLER( milliped_paletteram_w )
}
+WRITE8_HANDLER( mazeinv_paletteram_w )
+{
+ int bit0,bit1,bit2;
+ int r,g,b;
+
+ paletteram[offset] = data;
+ data = memory_region(REGION_PROMS)[~data & 0x0f];
+
+ /* red component */
+ bit0 = (data >> 5) & 0x01;
+ bit1 = (data >> 6) & 0x01;
+ bit2 = (data >> 7) & 0x01;
+ r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
+
+ /* green component */
+ bit0 = 0;
+ bit1 = (data >> 3) & 0x01;
+ bit2 = (data >> 4) & 0x01;
+ g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
+
+ /* blue component */
+ bit0 = (data >> 0) & 0x01;
+ bit1 = (data >> 1) & 0x01;
+ bit2 = (data >> 2) & 0x01;
+ b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
+
+ palette_set_color(Machine, offset, MAKE_RGB(r, g, b));
+}
+
+
/*************************************
*