From: dhavill@rucs2.sunlab.cs.runet.edu (Adrian Havill)
Subject: Re: [Sega Genesis] A/V connector
Organization: Radford University
Distribution: na
Date: Tue, 26 Jan 1993 13:40:22 GMT

don@tellabs.com (Donald Leonard) writes:
>>[from the rec.games.video FAQ]
>>
>>``What are the pinouts on the Genesis A/V connector?''
>>
>>Starting from the 1 o'clock position, looking at the Genesis from 
>>the back, and going clockwise, the pins are:  red, audio, +5 volts, 
>>ground, green, composite video, and negative combined sync, with 
>>blue on the center pin.
>
>I took this from the game faq file. Could someone please spell out
>to me what the pinouts are???? 
>Does "red" mean I don't know, but the wire is red or is pin 1 red
>and its the audio pin. Same goes for green. Blue center pin *&#$%?????
>Forgive me if I sound insulting - its only because I am :-)

Looking at either a Neo Geo or Genesis A/V connector with the notch up top...
        
       |_______|
   /---\       /---\       1. Red Analog signal
   | 7 |       | 1 |       2. Audio (mono) line out
   \---/       \---/       3. Vcc (+5 volts DC)-- used to power RF modulator
/---\    /---\    /---\    4. Ground--the outer metal sheath is also ground 
| 6 |    | 8 |    | 2 |    5. Green Analog signal
\---/    \---/    \---/    6. Composite (Red+Blue+Green) Video line out
   /---\       /---\       7. Sync signal to coordinate gun timing
   | 5 | /---\ | 3 |       8. Blue Analog signal
   \---/ | 4 | \---/
	 \---/

>Seriously though... I'd like to build a cable that will carry all
>of the signals (sterio,audio and video) to the TV. The TV has line
>inputs.

Building a cable, especially a good shielded one (since that is why we
upgrade our A/V cables in the first place), is not something to be done
if you don't know what you're doing. Redmond Cable does a great job with
custom setups.

Redmond Cable's phone number is:
   1-206-882-2009 (West Coast)
   1-615-478-5760 (East Coast)

Prices depend on the cable specs (length, type of monitor, system, etc). They
do SNES and other console cables too.

There is no stereo out (ironically) on either the Genesis or the older
Neo Geos. (Like the Genesis, there is now an "older" Neo Geo and a newer
one. The new Neo Geo has stereo line outs, among other things)

The only way to get stereo is by connecting you stereo aux in to the
headphone port wia adapter pugs/cables, and adjusting the headphone volume
so you don't over-modulate the signal.

Only the older TVs have RGB inputs (what that FAQ question was referring to).
Or if you have an analog RGB monitor with a horizontal scanning frequency
of at least 15.7 kHz. (Practically all of them can do that rate... It's
very low). A multisync monitor will work but it's a bit overkill. Digital
monitors will not work. Some monitors require custom rigups which Redmond
knows about and I don't. Some good cheapo RGBs:

Philips CM8833 Mark 2 14"  $375
Protar Visto A14CM 14"     $360
Commodore 1084S Stereo 13" $300
Atari SC1435 Stereo 14"    $350 (or less) [estimated]
(NOT the cheaper SC1224, which requires hardware modification)
   D&P Computers         1-800-535-4290
   ABCO                  1-800-562-4037
   Rising Star Computers 1-800-252-2787
   Micro Computer Depot  1-800-845-3070

The Atari is the best of the four, IMO, because of it's features. Big isn't
always better, in some peoples opinion, as it tends to expose the square
pixel definitions as consoles don't use a very high resolution compared to
computers.

Many game artists take this into account and use colors that blend/bleed/mix
to the human eye when designing game graphics. You could always view the
screen from a few yards away to get the "blending" effect again, though.

You most likely have composite inputs with RCA phono-type plug inputs on
your TV. Use the composite cable that came with your Genesis/Neo Geo. This
will provide you with a much better picture than going through the RF
modulator (the gizmo that converts a video game audio and video into a
radio frequency that the TV can pick up on channels 2/3/4)

>thanks for the help

iie. doo itashimashite.
Newsgroups: rec.games.video