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   >>>> The "No More License Screen"  Sega Genesis Mod <<<<
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   By: Devster - Joseph Norman, http://devster.monkeeh.com
                           6/11/2004


                !!!!!Precaution!!!!!
  If you have a Sega Genesis 32x add-on, or a Sega CD add-on, and
  want to keep using those add-ons, this mod will not work for you!


Intro
=====
This modification is only for Sega Genesis units that show a startup
license screen. The purpose for this mod is to bypass this screen, since
its wasting 3 seconds of our time, and does get annoying and ugly. The mod
can be used with Sega Genesis units 1+2. I have no way in testing it on
the Sega Genesis unit 3. Precaution: If you have a Sega Genesis 32x add-on,
or a Sega CD add-on, and want to keep using those add-ons, this mod will
not work, and will make your 32x/sega cd useless if connected to the
modded Genesis. Remember: I am not held responsible for all goof-ups
you make!


What do I need?
===============
1) Wire, any type, preferably high gauge
2) Screwdriver
3) Sega Genesis Unit
4) Sega Genesis Games
5) A trace of a brain =)
6) Optional: Multimeter or continuity tester
7) Soldering iron+solder


How do I do this?
=================
1)  Take apart the Genesis unit
2)  Locate the cartridge connector
3)  With the unit facing with the joystick ports in front, locate the
    bottem row of the cartridge connector (The bottem row is usually
    labeled B1 on the left side of the connector, and B32 on the right,
    depending on your motherboard)
4)  Count 17 pins from the left of the connector (or you can count 16
    pins from the right, but anyway, you should get to the same pin
    anyways), remember, the pin is one the bottem row! (step #3) We
    will now call this pin B17. B17 is pin 19 :)
5)  Now's the tricky part: Find a trace to this pin that's as close
    to the connector as possible (i'm sure if you go an inch away, it
    wouldn't hurt)
6)  When you find a visible trace to this pin, take a multimeter and
    check the resistance between the trace and the B17 on the cartridge 
    connector, that's if you have a multimeter. If there's way too much
    resistance, then go back to step #5. If you can't find a visible, true
    tracing that goes to the B17 pin on the cartridge connector, then DO NOT
    DO THIS MOD! Cutting any trace that you have no clue what it is will
    make your Sega Gensis broke (i mean useless)!
7)  Cut the trace. Either carefully/gently scrape it with a flathead
    screwdriver, or hobby knife. You can also drill the trace out with
    a drill without going through the whole pc-board.
8)  Count 11 pins from the left of the connector (or you can count 22
    pins from the right, but anyway, you should get to the same pin
    anyways), remember, the pin is one the bottem row! (step #3) We
    will now call this pin B11. B11 is pin 11 :)
9)  Locate the right-most pin on the bottem edge of the cartridge connector.
    This pin should be pin number 32, that's from the left. We will call
    this pin B32.
10) Find any trace that goes to the B32 pin. When you have founf the trace,
    and verified that it does go to B32 on the cartridge connector, then cut
    this trace off.
11) Solder a piece of wire onto the B17 pin of the cartridge connector to
    the B11 pin of the cartridge connector. You can do this on the bottem
    side of the motherboard
12) All done!


How does it work?
=================
It involves switching the ROM's CE line to the A23 line. The CE line is only
enabled when the sega licensing screen has gone through. If the licensing
screen is disabled by just cutting off the CART_IN security pin, the CE line
will not be enabled. So this mod (1) Disables the licensing screen by making
it appear to the Genesis that there is no cartridge inserted by cutting off
the CART_IN line, and (2) Connects A23 to the ROM CE line because the ROM CE
line is disabled if a cartridge is not present to the Sega Genesis.


Want a better document?
=======================
If you've done the mod, and want to make a new document, then go ahead! Just
gimme credits and hook ups and stuff :D. Perferably, if you made pictures
and can explain it a whole lot better than me, that'd help a lot for electronics
newbies out there.