Differences

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

Link to this comparison view

av:japanese_rgb-15 [2016/05/30 15:33]
lawrence Added intro about the Ys line.
av:japanese_rgb-15 [2019/08/27 20:45]
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.  ​ 
  
-**<color indianred>​Pay attention to the differences,​ they are important!</​color>​** ​ Specifically,​ watch the Ys line.  This is a 5V signal from the machine that tells the monitor a computer is actively sending video. ​ Without this signal many monitors will not attempt to show anything, and my NEC monitor simply goes into standby. ​ Since many devices don't include 5V (for example, VGA) you may have to add this yourself. ​ I wired mine to a USB connector, and plug that in to any USB device to activate the monitor.  ​ 
- 
-**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^ 
-|  1  |Red  |  9  |NC  | 
-|  2  |Ground ​ |  10  |Audio L  | 
-|  3  |Green ​ |  11  |Audio R  | 
-|  4  |Ground ​ |  12  |Ground ​ | 
-|  5  |Blue  |  13  |NC  | 
-|  6  |Ground ​ |  14  |H-Sync ​ | 
-|  7  |Ys  |  15  |V-Sync ​ | 
-|  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]]. 
 
 av/japanese_rgb-15.txt ยท Last modified: 2019/08/27 20:45 (external edit)
 
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
Recent changes RSS feed Driven by DokuWiki