🚀 go-pugleaf

Has anyone tried the solution for the lack of chroma in the 800XL that
was published in the February ANTIC i/o board column?  Essentially it
says that the chroma output is at the emitter of Q5.  You need to connect
a 200 ohm resistor from the junction of R67 and R68 to pin 5 on the monitor
connection.  Credit for this goes to the Chicagoland Atari Users Group.

		       R67       R68
		 _____     __.__     _____
		      ^^^^^  |  ^^^^^
			     |
			     |
                             >
			     > 200 ohm   
			     >
			     >
			     |
			     |
			     |
                           pin 5

Note: resistors R67 and R68 actually are next to each other and not back
to back as this diagram would indicate.  I have intalled this on my 800XL
and the picture I get on my C*******e 1702 monitor is identical to that
of my 130XE.  (I would suggest to install this on the bottom side of the
board.  It is easier to get outside of the shield that way and also it
is easier to solder.)

Question:  the diagram for the 130XE shows --   
	   pin 1  composite luminance
	   pin 2  ground
	   pin 3  audio output
	   pin 4  composite video
	   pin 5  composite chroma

-- the 800XL still has one pin not used (I think pin 4), what does this 
   mean?  Should this remaining pin be connected?  If so, to what?

Then on the 1200XL, I find that pin 5 is not connected to anything, but
pin 4 is.  Is pin 4 composite video on the 1200XL and if so, should I
connect pin 5 to pin 4 or to something else (on the 1200XL)?

I find it hard to imagine that the 130XE requires five pins connected 
and that the 800XL and 1200XL only require four pins connected.  And not
the same four to boot!!!

By the way the pin configuration (per the 130XE manual, as looking at
the connector on the computer is:


                          |_|
		      3 .     . 1
                     5 .       . 4
                           .
			   2

[Only Atari would not number these pins consecutively!]

			  --Bill--
                     tektronix!tekigm2!wrd

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      We still need to split to net.micro.atari and net.micro.st!
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