NEC MultiSync JC-1401P3A and others. Pinout Info:

This monitor works in both digital mode and analog mode. The pinout 
is different between the two modes. The connector at the monitor is 
a female 9pin D-Sub.

+-----+----------------+-------------------------------------------+
| Pin | Analog:        | Digital:                                  |
| no. |                |  8 colors |  16 colors | 64 colors        |
|     |                |           |            |                  |
|  1  |  Red           |  Gnd      |  Gnd       |  Gnd             |
|  2  |  Green/C Sync  |  -----    |  -----     |  Secondary Red   |
|  3  |  Blue          |  Red      |  Red       |  Primary Red     |
|  4  |  H/C Sync      |  Green    |  Green     |  Primary Green   |
|  5  |  V Sync        |  Blue     |  Blue      |  Primary Blue    |
|  6  |  Gnd           |  -----    |  Intensity |  Secondary Green |
|  7  |  Gnd           |  C Sync*  |  C Sync*   |  Secondary Blue  |
|  8  |  Gnd           |  H Sync   |  H Sync    |  H Sync          |
|  9  |  Gnd           |  V Sync   |  V Sync    |  V Sync          |
|     |                |                                           |
+-----+----------------+-------------------------------------------+

"-----"  means No Connection (can also be ground)

Green/C  means composite sync on green
H/C Sync means horizontal or composite sync

*some manuals do not show this.


Officially it supports CGA, EGA and VGA. The monitor works in MDA mode
too, but you may need to switch it to 16 colors, and flip on TXT mode.

The maximum resolution supported is 800x560. However they will work at
800x600.


Wiring:

To run in MDA/CGA  mode just use a straight thru cable  and set for 16
color:

 Pin  Digital                     
 no.  16 color mode                       MDA:              CGA:
                                                              
  1   Gnd ------------------------------- Gnd ------------- Gnd	    		   
  2   N/C ------------------------------- Gnd ------------- Gnd	    	
  3   Red ------------------------------- N/C ------------- Red    	        	   
  4   Green ----------------------------- N/C ------------- Green	    		   
  5   Blue ------------------------------ N/C ------------- Blue   	        	   
  6   Intensity ------------------------- Intensity ------- Intensity      	
  7   C Sync*---------------------------- Video ----------- Reserved       	
  8   H Sync ---------------------------- H Sync ---------- H Sync			   
  9   V Sync ---------------------------- V Sync ---------- V Sync    	            
     

To run in EGA  mode just use a straight thru cable  and set for 64
color:

 Pin  Digital
 no.  64 color mode                       EGA
                                                                  
  1   Gnd ------------------------------- Gnd			   
  2   Secondary Red --------------------- Secondary Red (Intensity)  
  3   Primary Red ----------------------- Primary Red		   
  4   Primary Green --------------------- Primary Green		   
  5   Primary Blue ---------------------- Primary Blue		   
  6   Secondary Green ------------------- Secondary Green (Intensity)
  7   Secondary Blue -------------------- Secondary Blue (Intensity) 
  8   H Sync ---------------------------- H Sync		   
  9   V Sync ---------------------------- V Sync    


The Amiga uses a 23pin D-sub connector. This is a pinout found
for the Amiga. I have not tested it:

 Pin  Analog:                              Amiga 
 no.                                       Pin:
                    
  1   Red -------------------------------- 3	 Red		
  2   Green/C Sync ----------------------- 4	 Green		
  3   Blue ------------------------------- 5	 Blue		
  4   H/C Sync --------------------------- 11	 H Sync		
  5   V Sync ----------------------------- 12	 V Sync		
  6   Gnd -------------------------------- 	 N/C 	
  7   Gnd -------------------------------- 20	 Gnd	
  8   Gnd -------------------------------- 18	 Gnd	
  9   Gnd -------------------------------- 16,17 Gnd

To run in the new VGA system with the IBM Hi-density 15pin D-sub
use the following diagram and set the monitor to analog mode:

 Pin  Analog:                              VGA   VGA:
 no.                                       Pin:
                    
  1   Red -------------------------------- 1	 Red		
  2   Green/C Sync ----------------------- 2	 Green		
  3   Blue ------------------------------- 3	 Blue		
  4   H/C Sync --------------------------- 13	 H Sync		
  5   V Sync ----------------------------- 14	 V Sync		
  6   Gnd -------------------------------- 6	 Red Gnd 	
  7   Gnd -------------------------------- 7	 Green Gnd	
  8   Gnd -------------------------------- 8	 Blue Gnd	
  9   Gnd -------------------------------- 10,11 H and V Sync Gnd


The NEC 3D has the 15pin HD-sub at the monitor end.

The following pinout is supposed to work for CGA. It may also work for
EGA and MDA:
 
Pin  Analog VGA                           CGA CGA 
no.  Pin names                            Pin

 1    Red ------------------------------- 1  Gnd       
 2    Green ----------------------------- 2  Gnd	
 3    Blue ------------------------------ 3  Red       
 13   H Sync ---------------------------- 4  Green     
 14   V Sync ---------------------------- 5  Blue      
 5    Gnd ------------------------------- 6  Intensity 
 15   ID Bit 3 -------------------------- 7  Reserved  
 12   ID Bit 1 -------------------------- 8  H Sync     
 10   H/V Gnd --------------------------- 9  V Sync      

Sorry dont know what  the pin names are at the  monitor end in digital
mode.