Differences

This shows you the differences between two versions of the page.

--- av:japanese_rgb-15 [2005/12/02 07:10] – created 198.209.225.230
+++ av:japanese_rgb-15 [2014/08/24 04:36] – eidis
@@ Line 1: / Line 1: @@
+====== Japanese RGB-15 Connector ======
+This connector is the standard for many pre-DOS/V (IBM compatible) computers in Japan.  The PC-9801, X68000 and FM Towns all used this pinout, or similar variants of it.  **Pay attention to the differences, they are important!**
+**NOTE** the numbers are usually visible on the connector itself.  If you're looking at the business end of the female connector, pin 1 is on the right.  On a male connector it's on the left.
+===== X68000 =====
 {{http://www.gamesx.com/grafx/db15.gif}}
-^Pin^Function^-^Pin^Function^
+^Pin^Function^Pin^Function^
-|1|Red|-|9|NC|
+|  1  |Red  |  9  |NC  |
-|2|Ground|-|10|Audio L|
+|  2  |Ground  |  10  |Audio L  |
-|3|Green|-|11|Audio R|
+|  3  |Green  |  11  |Audio R  |
-|4|Ground|-|12|Ground|
+|  4  |Ground  |  12  |Ground  |
-|5|Blue|-|13|NC|
+|  5  |Blue  |  13  |NC  |
-|6|Ground|-|14|H-Sync|
+|  6  |Ground  |  14  |H-Sync  |
-|7|Computer Data Present|-|15|V-Sync|
+|  7  |Ys  |  15  |V-Sync  |
-|8|Ground|-|||
+|  8  |Ground  |||
+  * Ys = computer data present.  Usually +5V
+===== PC 9801 =====
+The PC-9801 connector is nearly the same as the X68000.  The differences are very minor: pins 9 and 13 are used for the 9801, but are not connected on the X68000.
+{{http://www.gamesx.com/grafx/db15.gif}}
+^Pin^Function^Pin^Function^
+|  1  |Red  |  9  |Ys  |
+|  2  |Ground  |  10  |AV Control  |
+|  3  |Green  |  11  |Mode  |
+|  4  |Ground  |  12  |Ground  |
+|  5  |Blue  |  13  |Dot Clock  |
+|  6  |Ground  |  14  |H-Sync  |
+|  7  |Ys  |  15  |V-Sync  |
+|  8  |Ground  |||
+  * Ys = computer data present.  Usually +5V
+===== FM Towns =====
+{{http://www.gamesx.com/grafx/db15.gif}}
+^Pin^Function^Pin^Function^
+|  1  |Red  |  9  |Ys  |
+|  2  |Ground  |  10  |AV Control  |
+|  3  |Green  |  11  |Mode  |
+|  4  |Ground  |  12  |Ground  |
+|  5  |Blue  |  13  |Dot Clock  |
+|  6  |Ground  |  14  |H-Sync  |
+|  7  |C-Sync  |  15  |V-Sync  |
+|  8  |Ground  |||
+  * Note that some FMTowns systems used a VGA connector.
+  * Ys = computer data present.  Usually +5V
+===== CAVEATS =====
+  * Not all systems put out power on pin 7.  Normally +5v, some devices (like the X-RGB2) leave this pin disconnected.  You can add power to your cables, for monitors that require it, following [[adding_5v_to_scart_lead|these directions]].
+  * Remember that the pin numbers are almost always found on the connector itself.
+----
+**Credit:**
+  * Some of this info came from [[http://hp.vector.co.jp/authors/VA018718/towns/connect/pinasgn.htm|this Japanese page]].