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author Couriersud <couriersud@users.noreply.github.com>2010-05-13 12:56:40 +0000
committer Couriersud <couriersud@users.noreply.github.com>2010-05-13 12:56:40 +0000
commit5361d0525b10aa610bda071ebcb3f3398a3e6b3a (patch)
tree54897a4fcfa6ca41195506c0014ec5a5de3134fe
parentcf3333e821146a83117a9c00991772a357374d2d (diff)
Added information about Konami 084 custom chip - no whatsnew
-rw-r--r--src/mame/drivers/tutankhm.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/mame/drivers/tutankhm.c b/src/mame/drivers/tutankhm.c
index 0e8775df4b5..ef8aaf5f65e 100644
--- a/src/mame/drivers/tutankhm.c
+++ b/src/mame/drivers/tutankhm.c
@@ -18,6 +18,34 @@
* Discrete filters
* Starfield
+
+ Custom Chip 084 (Starfield generation)
+
+ * Inputs:
+ *
+ * NE555 ==> 10 (approx 1 HZ)
+ * 401 ==> 1 (crystal clock, most likely around 6 MHz)
+ * 109 ==> 2 (Video related)
+ * 403 ==> 3 (Video related)
+ * 403 ==> 4 (Video related)
+ * 405 ==> 5 (Video related)
+ * 406 ==> 6 (Video related)
+ * 420 ==> 20 (Video related)
+ * 421 ==> 21 (Video related)
+ * 422 ==> 22 (Video related)
+ * 423 ==> 23 (Video horizontal signal H1)
+ *0x8206 HFF ==> 7 (Horizontal flip)
+ *0x8204 407 ==> 8 (Enable ???)
+ *
+ *Outputs:
+ * 13 Red
+ * 14 Red
+ * 15 Green
+ * 16 Green
+ * 17 Blue
+ * 18 Blue
+
+
***************************************************************************/
#include "emu.h"