STAR TREK NEXT GENERATION -CUSTOM CPU-LX-9

https://drive.proton.me/urls/WZV79221ZC#SFQiTtAwWYm2

Feb. 16 2023
Rev 1.0

STTNG LX-8
IT’S LX-7 AT WARP FACTOR 9

STTNG LX-8 1/22

0. Warnings

This is an unofficial update for LX-7 (Special-Speech version)

Not authorized by Williams!

The use of modified software outside of PinMAME

is not intended
and done at your own risk!

DO NOT LED-PATCH THIS ROM!
The Non-Ghosting patch is already included and can be enabled

via Adjustment A.2 36 LED PATCH.

COUNTRY SETTINGS
Country settings / DIP switches on the MPU are ignored.
For details please read 6.1 Country Settings

FIRST LX-8 BOOT TRIGGERS FACTORY RESET

All your LX-7 high scores will be lost.

STTNG LX-8 2/22

Table of Contents
1. Overview..........................................................................................................................................4
1.1 New Adjustments............................................................................................................................4
1.2 Changed Adjustment Ranges..........................................................................................................5
1.3 Changed Factory Defaults..............................................................................................................5
2. New Adjustments - Details...............................................................................................................6
A.2 29 RANDOM CAVES.........................................................................................................6
A.2 30 SHOW NZ LOCK...........................................................................................................6
A.2 31 NZ-SUBW. ROLLBACK...............................................................................................7
A.2 32 BALLSTART-FLIPS.......................................................................................................7
A.2 33 RTD KCKBCK SAVER..................................................................................................7
A.2 34 HURRY.UP PROX.ONLY..............................................................................................8
A.2 35 PERCNT.ADJ.HOME.USE............................................................................................8
A.2 36 LED PATCH....................................................................................................................9
A.2 37 BORG.MB RTD TIMER................................................................................................9
A.2 38 BORG.MB SHOW INIT.................................................................................................9
A.2 39 BORG.LOCK ROLLBCK............................................................................................10
3. Bugs Fixed in LX-8........................................................................................................................11
3.1 Cannon-Reload Locks + Cannon-Reload Lights Lock.......................................................11
3.2 Missing Time Rift Hit Counter Reset..................................................................................11
3.3 Romulans Interrupt Borg Multiball and Shuttle Simulation...............................................12
3.4 VUK Overload....................................................................................................................12
3.5 Special Speech Call-Outs Not Disabled Completely..........................................................13
3.6 Unhandled NZ-Shots...........................................................................................................13
3.7 Officer's Club Shown Even if Buy-Ins Are Disabled.........................................................14
3.8 Replay Animation Shown Even if Replay Award Is Set to Audit.......................................14
3.9 Borg Ship Ejects Ball on 2nd Ball Locked in Subway.........................................................14
3.10 High Scores Above 9,999,999,990 in Honor Roll and Officer’s Club..............................15
3.11 Borg Multiball Music After Borg Multiball......................................................................15
3.12 Borg Lock Lit Before Final Frontier Is Unusable Afterwards..........................................15
3.13 Rescue Mission Not Always Ended Correctly..................................................................15
3.14 Rescue Mission Not Always Resumed Correctly.............................................................16
3.15 Drop Target Handling Warp 4...........................................................................................16
3.16 Drop Target Is Always Up After Final Frontier................................................................17
3.17 Drop Target State Can Be Wrong After Cardassian and Ferengi Encounter....................17
3.18 Drop Target State Can Be Wrong During Borg Multiball.................................................17
3.19 Extra Ball Lit When Starting Final Frontier Can Cause Trouble......................................18
3.20 Battle Simulation Can Spill Over Into NZ Encounters.....................................................18
3.21 Launch-A-Probe Awards Light Lock Even If Lock Is Already Lit...................................18
4. Troubleshooting..............................................................................................................................19
5. Appendix NZ – The Neutral Zone..................................................................................................20
5.1 The State of the Neutral Zone..................................................................................................20
5.2 Neutral Zone Target- and Lock-Lighting Behavior.................................................................21
6. Appendix AH – Additional Hacks..................................................................................................22
6.1 Country Settings..................................................................................................................22
6.2 Volume Buttons...................................................................................................................22
7. Appendix VP – Recommended VPin Settings................................................................................22
8. Appendix RC – ROM Changes......................................................................................................22
STTNG LX-8 3/22

1. Overview

This revised software for Star Trek The Next Generation (dubbed LX-8) is a very carefully
executed, complete overhaul of the LX-7 version. The goal was to eliminate bugs and
inconsistencies, but also to add obviously missing features. Everything was designed to maintain
the spirit of the original game and every change that is not a bug-fix can be disabled. But if you like
LX-7 you are certainly going to love LX-8.
With LX-8 on default settings, you will get all the good stuff from LX-7 without most of it’s bugs -
and some cool new LX-8 features on top. You are going to have a random Shuttle Simulation,
Launch Probe and Skill Shot are good ball-start options once again, Special Speech can be
completely disabled, the drop target is always set correctly and default settings, including
“percentage calculations” (see A.2 35 PERCNT.ADJ.HOME.USE), have been optimized for home
use.
LX-8 uses the NZ Lock Insert differently than LX-7. You definitely need to have a look at the
details described in Chapter 2, A.2 30 SHOW NZ LOCK. If you decide to play first and read later,
you might also be surprised by the new Kickback-Saver. If you don’t like it you can revert the
behavior here: A.2 33 RTD KCKBCK SAVER.
And in case of trouble please check Chapter 4. Troubleshooting.

1.1 New Adjustments

For LX-7 choose Default in LX-8
A.2 29 RANDOM CAVES OFF ON
A.2 30 SHOW NZ LOCK LATE / LX-7 EARLY
A.2 31 NZ-SUBW. ROLLBACK N.F / LX-7 FIXED
A.2 32 BALLSTART-FLIPS ON OFF
A.2 33 RTD KCKBCK SAVER OFF ON
A.2 34 HURRY.UP PROX.ONLY OFF ON
A.2 35 PRCNT.ADJ.HOME.USE OFF ON
A.2 36 LED PATCH OFF OFF
A.2 37 BORG.MB RTD TIMER 6s 6s
A.2 38 BORG.MB SHOW INIT OFF ON
A.2 39 BORG.LOCK ROLLBACK N.F / LX-7 N.F / LX-7

STTNG LX-8 4/22

1.2 Changed Adjustment Ranges
A.2 FEATURE ADJUSTMENTS

LX-7 LX-8
Min Max Min Max
A.2 02 EXTRABALL PERCENT OFF 35 % OFF 100 %
A.2 06 MULTIBALL PERCENT 10 % 50 % OFF 50 %
A.2 08 FERENGI TIME 8s 20s 8s 90s
A.2 12 RETURN TO DUTY OFF ON 0s 30s
1.3 Changed Factory Defaults

LX-7 LX-8

A.1 STANDARD ADJUSTMENTS
A.1 04 REPLAY SYSTEM AUTO% FIXED
A.1 09 REPLAY LEVEL 1 450 000 000 1 000 000 0001
A.1 13 REPLAY BOOST 50 000 000 OFF1
A.1 14 REPLAY AWARD CREDIT AUDIT
A.1 28 MIN. VOL. OVERRIDE NO YES
A.1 29 GI POWER SAVER 15 Minutes 2 Minutes
A.1 32 NO BONUS FLIPS NO YES
A.2 FEATURE ADJUSTMENTS
A.2 01 SPECIAL PERCENT 3 % OFF
A.2 02 EXTRABALL PERCENT 20 % 25 %2
A.2 06 MULTIBALL PERCENT 20 % 12 %2
A.2 10 BUY EXTRA BALL 1 CREDIT OFF
A.2 12 RETURN TO DUTY ON [4 secs] 10 secs
A.2 23 POST GAME SHOW NORMAL SHORT
A.3 PRICING ADJUSTMENTS
A.3 17 FREE PLAY NO YES
A.4 H.S.T.D. ADJUSTMENTS
A.4 09 H.S. RESET EVERY 3000 OFF
1 Only relevant if REPLAY AWARD is not set to AUDIT, e.g. if ADD-A-BALL was chosen.
2 Which corresponds to the LX-7 value when A.2 35 PERCNT.ADJ.HOME.USE is enabled.
STTNG LX-8 5/22

2. New Adjustments - Details

A.2 29 RANDOM CAVES
If you play STTNG on a regular basis, you are most probably a little bit bored by LX-7’s static cave
layout in Shuttle Simulation. With LX-8, Shuttle Simulation is fun and challenging.
Available Settings:
• ON (default)
At the end of each cave there’s a 50% chance that the left and right exit of the cave are
switched, resulting in a new, randomized cave system every time the simulation is activated.
• OFF
Stock LX-7 Shuttle Simulation with static cave system.

A.2 30 SHOW NZ LOCK
In both LX-7 and LX-8, the NZ has a clearly defined state once a game is started, and it’s either:
• Start Romulan Encounter
• Start Ferengi Encounter
• Start Cardassian Encounter or
• Lock a ball
but previously the machine wouldn’t tell you until all three NZ Targets were lit. LX-8 changes that.
Available Settings:
• EARLY (default)
If the NZ is in the “lock state”, the first lit NZ target will also light the NZ Lock Insert. So
you will know that you can lock a ball once all NZ targets are lit. In other words, although
the NZ Lock Insert may be lit early on, no balls will be locked until all NZ targets are lit.
• LATE / LX7
If the NZ is in “lock state”, the Lock Insert will only turn on once all three NZ targets are lit.
If the ball enters the subway immediately after hitting the third NZ target the ball will
immediately be locked – but the NZ Lock Insert will never turn on.
For detailed information about NZ behavior in LX-7 please refer to 5. Appendix NZ – The Neutral
Zone.

STTNG LX-8 6/22

A.2 31 NZ-SUBW. ROLLBACK
There is a problem with fast balls going in the subway from the Neutral Zone: sometimes they can
travel the subway up to the “Under Top Hole” opto triggering locks or shuttle simulations. This
setting eliminates that problem.
Available Settings:
• FIXED (default)
The Under Top Hole Handler checks if the NZ was recently hit and then ignores balls that
are traveling the subway in the wrong direction.
• N.F / LX-7
Stock LX-7 behavior. Under-Top-Hole Handler doesn’t check whether the NZ was hit.
Remark:
Fast balls coming from a NZ Target that are being shot directly to the Right Loop and into
the subway might be ignored at the Top Hole and then registered as NZ or Left Hole hits
with this adjustment enabled. But these are far less common than subway rollbacks.

A.2 32 BALLSTART-FLIPS
Like A1.32 “No-Bonus-Flips”, but for mode/skill-selection at ball start.
Available Settings:
• ON
Stock LX-7, flippers are active during mode selection.
• OFF (default)
Flippers are deactivated during mode selection.

A.2 33 RTD KCKBCK SAVER
Available Settings:
• ON (default)
While Return-To-Duty is active the Kickback Plunger will be used to bring the ball back to
the playfield. Kickback state won’t be changed.
• OFF
Stock LX-7 behavior: Kickback is only used when lit and then deactivated, even while
Return-To-Duty is active.
STTNG LX-8 7/22

A.2 34 HURRY.UP PROX.ONLY

In LX-7 if Hurry-up is lit, it can be triggered by Made-Middle-Ramp (Alpha Ramp), Left-VUK-
Ball-Kickout and by Left-Return-Lane (the proximity / Eddy sensor). Most probably this was done

to avoid trouble in case the proximity sensor is not working correctly on location. But it feels wrong
to have the Hurry-up started before the ball rolls over the “Start Hurry-up” insert.
Available Settings:
• ON (default)
Hurry-up is only triggered by Left-Return-Lane.
• OFF
LX-7 stock behavior. Made-Middle-Ramp, Left-VUK-Ball-Kickout and Left-Return-Lane
trigger Hurry-up.

A.2 35 PERCNT.ADJ.HOME.USE
In LX-7, Special Percent (A2.1) and ExtraBall Percent (A2.2) are meant to be set by the operator.
The machine keeps track of the actual extra balls awarded and tries to meet the operator's settings
by constantly adjusting the probability of random Special and extra ball awards that can be earned
via Skill Shot and Launch-A-Probe (the random extra ball can also be found during shuttle
simulation). A random extra ball is only given as first extra ball per game (once for each player).
Special is only given once per game (no matter how many players) - and it’s only available if
Special Award is set to “credit”.
Multiball Percent is only checked every 240 games and is used to adjust the number of NZ
encounters before a NZ lock is available. (See 5. Appendix NZ – The Neutral Zone). The Light
Lock probability of Launch-A-Probe is fixed at 12%.
For home use it is more convenient to set fixed Skill Shot and Launch-A-Probe probabilities instead
of using a moving average, hence this new feature.
Available Settings:
• ON (default)
The percentage values set in the adjustments are used directly as probabilities for Skill Shot
and Launch-A-Probe. They are not adjusted over time. The NZ lock offset is not adjusted at
all and the NZ Lock will always be available after the first NZ encounter - like it is in LX-7
for the first 240 games after a factory reset. Multiball Percent can now be used to adjust the
Light Lock probability of Launch-A-Probe.
• OFF
LX-7 behavior for percentage adjustments.

STTNG LX-8 8/22

A.2 36 LED PATCH
Available Settings:
• ON
Avoid ghosting by using modified lamp matrix code.
• OFF (default)
Stock LX-7 lamp matrix code.

A.2 37 BORG.MB RTD TIMER
Available Settings:
• 6 .. 30 secs (default: 6s)
Adjust duration of Borg Multiball Return-To-Duty Timer. In LX-7 this period is hard coded
to 6s.

A.2 38 BORG.MB SHOW INIT
There is a problem with Borg Multiball in LX-7: Not only Return-To-Duty is running at Borg
Multiball start, but also a Borg Multiball Init Handler. This handler is running until 3 balls are on
the playfield. If you manage to lose one ball and keep one or two constantly entering the subway,
you can keep this handler running and thus have RTD like functionality although RTD might not be
lit anymore!
Available Settings:
• FIXED (default)
With this setting enabled, RTD insert will stay lit after the RTD period until the Borg
Multiball Init Handler has finished. This way you will see what’s going to happen with lost
balls during Borg Multiball.
• N.F. / LX7
LX-7 behavior.

STTNG LX-8 9/22

A.2 39 BORG.LOCK ROLLBCK
Balls shot up the Delta Ramp that reach the diverter but don’t make it all the way to the Borg Lock
can go down the wire ramp and trigger a lock. This usually happens when you have a steep
playfield angle. If you don’t want this occurrence to trigger a lock you can disable it here.
Available Settings:
• N.F/LX-7 (default)
LX-7 behavior. If Borg Lock is lit, Made-Left-Ramp switch triggers a lock.
• FIXED

If the Top Diverter wasn’t active and the ball goes down the wire ramp, the Made-Left-
Ramp switch won’t trigger a lock.

NOTES

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STTNG LX-8 10/22

3. Bugs Fixed in LX-8
All the LX-7 bugs listed here are fixed in LX-8. For details about how specific fixes work, please
refer to 8. Appendix RC – ROM Changes.

3.1 Cannon-Reload Locks + Cannon-Reload Lights Lock
In LX-7, whenever the cannon operation needs another ball from the trough during gameplay (for
instance at Ferengi Encounter start or if a ball is locked during Battle Simulation), the new ball from
the catapult is either triggering a lock-is-lit or is being locked when entering the subway through the
Top Hole.
Steps to reproduce:
a) for Cannon-Reload-Locks bug: light Right Lock.
for Cannon-Reload-Lights-Lock bug: proceed to (b).
b) Finish one NZ Encounter.
c) Hit NZ targets 3 times to light NZ Lock.
d) Start Battle Simulation.
e) Sink ball in NZ. It will be locked.
f) New ball comes from shooter lane and will be locked when entering the subway if you
haven’t skipped step (a). If you did, then the ball from the shooter lane will light Right Lock
when entering the subway.

3.2 Missing Time Rift Hit Counter Reset
The Time Rift hit counter should give you an artifact if it equals 4. Since it’s only reset at boot in
LX-7 this leads to weird behavior. For example if you hit 3 targets in your first game after boot and
then start Time Rift again in another game, it gives you the artifact on the first hit. Then you would
have to score 255 Time Rift hits to get another artifact. LX-8 resets the Time Rift counter at Time
Rift start.
Steps to reproduce:
a) Restart your STTNG.
b) Start a game.
c) Start Time Rift.
d) Hit 3 Time Rift shots and let the ball drain.

STTNG LX-8 11/22

e) Let the next 2 balls drain too.
f) Start a new game.
g) Start Time Rift.
h) First Time Rift shot is going to give you an artifact.

3.3 Romulans Interrupt Borg Multiball and Shuttle Simulation
If the Romulan Encounter is running when you start Shuttle Simulation or Borg Multiball in LX-7,
some effects of the Romulan Encounter continue running in the background: In Shuttle Simulation
the Romulan flasher (the green one) stays on and the playfield, which should stay dark, might get lit
after a few seconds.
In Borg Multiball, you might hear the Romulan background music again and also see Romulan
Encounter animations on the DMD. That happens when Romulan timers trigger or you hit “Klingon
Assistance” targets.
And if your Borg Multiball or Shuttle Simulation takes long enough, Romulan Encounter might
time out in the background.
In LX-8 all these problems have been fixed.
Steps to reproduce:
a) Light Holodeck by hitting the Beta Ramp 3 times.
b) Play NZ Encounters until the Romulans join the game.
c) Start Holodeck.
d) Notice the flasher is still lit,
e) and make sure you survive a few caves.
f) Within 10-15s the playfield lights up although you are still on the Holodeck.

3.4 VUK Overload
Sending balls during multiball into the subway overloads the VUK if you do 15+ consecutive shots.
Steps to reproduce:
a) With the glass removed, start a new game, select light lock.
b) Then directly lock a 2nd and a 3rd ball.
c) Now do the shooting part and don't let a ball drain, it doesn't matter if you hit or miss.

STTNG LX-8 12/22

d) Once the multiball starts, you should start grabbing the balls directly from the left flipper
and put them into the the Neutral Zone or the Center Shot as fast as you can.
e) Do this 20 times.
f) Then stop and wait for 4 balls from the left VUK and the other two should come out
from the cannons.

3.5 Special Speech Call-Outs Not Disabled Completely
With LX-7, even if you have A.2 28 SPECIAL SPEECH disabled, some Special Speech call-outs are
being played anyway.
Steps to reproduce:
a) Start a game with LX-7 Special Speech ROMs but with A.2 28 SPECIAL SPEECH
disabled.
b) Throughout the game - but most prominently in Battle Simulation - you will hear
Special Speech call-outs like:
• Excellent, Patrick!
• Fantastic, Patrick!
• Well done, Patrick!
• Beyond believe, Patrick!

Remark:
In order to have Special Speech in LX-8 you need to have Special Speech ROMs installed
and adjustment A.2 28 SPECIAL SPEECH enabled.

3.6 Unhandled NZ-Shots
There is a bug in the LX-7 Neutral Zone code. It happens when the NZ is in lock state when starting
Borg Multiball. If you haven’t already read 5. Appendix NZ – The Neutral Zone you should
probably do it now and come back afterwards.
Because no NZ Locks are allowed after Borg Multiball has been played, there is a problem when
NZ is in lock state when starting Borg Multiball: If you manage to activate all NZ targets during the
multiball then it’s not an issue, because lighting the 3rd target is where LX-7 advances the NZ from
“lock” to the next state. But if you do not hit the 3rd NZ target during multiball, NZ will remain in
lock state once multiball has ended. Once all three targets are lit, the next ball going into the subway
in the NZ will just advance the state of the NZ away from lock and come out of the left VUK while
the NZ stays lit.

STTNG LX-8 13/22

LX-8 checks if NZ is in lock state when Borg Multiball starts and advances the NZ state directly.
Steps to reproduce:
a) Start a game.
b) Finish one NZ Encounter – NZ is now in “lock state”.
c) Light all NZ targets to light the NZ Lock.
d) Start a Borg Multiball without using the NZ Lock. And during that multiball don’t shoot
the NZ at all.
e) After the Borg Multiball, shoot a ball into the lit NZ.
f) It will come out of the left VUK, no action is triggered although the NZ was lit and still
is.

3.7 Officer's Club Shown Even if Buy-Ins Are Disabled
Officer’s Club is the high score table for games with 2 or more buy-ins. If you disable buy-ins in
LX-7 it’s still going to show you the Officer's Club high score table in attract mode.

3.8 Replay Animation Shown Even if Replay Award Is Set to Audit
LX-8 doesn’t show the REPLAY animation if A.1 14 REPLAY AWARD is set to AUDIT. If there is
no award there shouldn’t be an animation.

3.9 Borg Ship Ejects Ball on 2nd Ball Locked in Subway
When you lock the 2nd ball via Right Lock or Neutral Zone with a lit Borg Lock and a ball inside
the Borg Ship, that ball gets kicked out of the Borg Ship. This usually only happens in a 2+ player
game, but with Launch Probe you can sometimes light the Borg Lock even though a ball is already
in there. So you might have seen this in single player games as well.
Steps to reproduce:
a) Start a 2 player game.
b) Select Skill Shot and shoot the ball onto the drop target to light Right and Borg Lock.
c) Lock a ball inside the Borg Ship, the next one into the Right Lock. And let the ball drain.
d) Now with Player 2, select Skill Shot and shoot the drop target again to light both locks.
e) Shoot the Right Loop to lock 1st ball in the subway.
f) Shoot the Right Loop to light the Right Lock again. And then again to lock a ball there.
STTNG LX-8 14/22

g) This 2nd lock will trigger the ball inside the Borg Ship to be kicked out. And another one
is going to be released by the left VUK, so you end up with 2 balls on the playfield.

3.10 High Scores Above 9,999,999,990 in Honor Roll and Officer’s Club
Even though the high score logic remains broken (for now), at least the display of the high score
lists in Attract Mode is fixed.

3.11 Borg Multiball Music After Borg Multiball
If you place a Center Shot within 1 or 2 seconds after Borg Multiball has ended, the hit is awarded
with another Borg Jackpot. This is fun and of course was not changed in LX-8. But in LX-7 the
Borg background music is triggered again and then running until you start another mission. This has
been fixed in LX-8.

3.12 Borg Lock Lit Before Final Frontier Is Unusable Afterwards
The Borg Lock cannot be used after Final Frontier if it was lit before Final Frontier started. If you
manage to get a ball into the Borg Ship it will be shot out immediately without triggering a lock
event. This is fixed in LX-8.
Steps to reproduce:
a) Start a game.
b) Finish all regular missions.
c) Before starting Final Frontier, make sure Borg Lock is lit.
d) Start Final Frontier.
e) Loose all balls but one.
f) Hit the Delta Ramp. Borg Lock is lit but the ball is spit out of the Borg Ship and the
Borg Lock remains lit.

3.13 Rescue Mission Not Always Ended Correctly
If you manage to rescue exactly 50 personnel and the last 5 with the transporter, the Rescue music
keeps playing and the animation is still shown, only the count down is not running anymore. This is
fixed in LX-8.
Steps to reproduce:

STTNG LX-8 15/22

a) Start Rescue mission.
b) Only hit the center shot to activate the transporter.
c) With the 10th hit, you are going to see what’s described above, Rescue mission is done
but animation and music is not ended correctly.

3.14 Rescue Mission Not Always Resumed Correctly
If you lock a ball or start Shuttle Simulation when all personnel is ready, Rescue animation and
music are not resumed even though the mission is still running. This is fixed in LX-8.
Steps to reproduce:
a) Make sure you have a lock lit.
b) Start Rescue mission.
c) Get “all personnel ready”.
d) Now lock the ball and after the ball locked animation, Rescue music and animation
won’t come back but the mission is still running.

3.15 Drop Target Handling Warp 4
When starting a ball with “Warp Factor 4”, the state of the drop target is not initialized correctly.
All other options initialize this variable correctly, but Warp Factor 4 does not. In a single player
game, that’s why the drop target goes down after preventing the ball from entering the subway even
though neither Right Lock nor Holodeck is lit. In a 2+ player game, it’s worse:
Steps to reproduce:
a) Start a 2 player game.
b) Player 1: Select “Skill Shot”, and then shoot the Right Loop to light Borg and Right
Lock.
c) Let the ball drain.
d) Player 2: select “Light Lock” (but anything except Warp-4 will work). Drop target is up
as it should be (since neither Holodeck nor Right Lock is lit). Then wait a little to let
RTD time out and let the ball drain.
e) Player 1: select “Warp 4”. You have now a lit Right Lock but a raised drop target.

This is fixed in LX-8. The drop target is set correctly when Warp Factor 4 is chosen.

STTNG LX-8 16/22

3.16 Drop Target Is Always Up After Final Frontier
Final Frontier is raising the drop target at start and is keeping it up while it’s running. At the end it
should lower it again if Right Lock and/or Shuttle Simulation are lit, but LX-7 doesn’t do that. This
is fixed in LX-8.
Steps to reproduce:
a) Start a game.
b) Finish all regular missions.
c) Before starting Final Frontier, make sure to light Right Lock or Shuttle Simulation.
d) Start Final Frontier.
e) Loose all balls but one.
f) Drop target is up although Holodeck and/or Right Lock is lit.

3.17 Drop Target State Can Be Wrong After Cardassian and Ferengi
Encounter
Both Ferengi and Cardassian Encounter can cause problems with the state of the drop target if
Holodeck and/or Shuttle Simulation is lit. The drop target will stay down at multiball start, but a
ball going into the Top Hole will raise it, and it’s then staying up after the multiball has finished.
This is fixed in LX-8. The drop target is always raised at the beginning of Ferengi and Cardassian
Encounter and it is lowered again afterwards if needed.
Steps to reproduce:
a) Start a game.
b) Before starting Ferengi or Cardassian Encounter, make sure to light Right Lock or
Shuttle Simulation so the drop target is down.
c) Start Cardassian/Ferengi Encounter.
d) Shoot the Right Loop to sink the ball in the Top-Hole.
e) Lose all balls but one to end Cardassian/Ferengi Encounter.
f) Drop target is up even though Holodeck and/or Right Lock is lit.

3.18 Drop Target State Can Be Wrong During Borg Multiball
During Borg Multiball, the drop target is usually down, and it is only raised shortly when a new ball
comes in from the shooter lane. However, if you start the Borg Multiball with a shot to the NZ and

STTNG LX-8 17/22

the Right Lock was not lit, the drop target will stay up throughout Borg Multiball. LX-8 removes
this inconsistency.
3.19 Extra Ball Lit When Starting Final Frontier Can Cause Trouble
If you start Final Frontier via Center Shot with a lit extra ball, the machine gets confused and
releases a ball from the left VUK while the artifacts are still being counted. If that ball is lost before
Final Frontier starts, the current ball ends directly. This is fixed in LX-8 by not showing the extra
ball animation when Final Frontier starts.
Steps to reproduce:
a) Light extra ball.
b) Start Final Frontier.
c) Let the ball that comes out of the left VUK while artefacts are being counted drain.

3.20 Battle Simulation Can Spill Over Into NZ Encounters
Battle Simulation has a grace period of 0.5 seconds. If Battle Simulation has just timed out and you
place a late shot into the subway, one more Battle Simulation shot is triggered. However, if NZ is lit
and you shoot the ball into the NZ subway immediately after Battle Simulation ends, the NZ
Encounter is started but you still get that one last Battle Simulation shot.
Steps to reproduce:
a) Light the NZ.
b) Start Battle Simulation.
c) Wait until the Battle Simulation timer has counted down to 0 and the music has ended. Then
- within 0.5s - shoot a ball into the NZ.
d) You get another cannon shot even though the NZ Encounter has started.

3.21 Launch-A-Probe Awards Light Lock Even If Lock Is Already Lit
Launch-A-Probe assembles a list of valid awards (along with their probabilities) before randomly
selecting one. The code that checks if the right lock is lit before making Light Lock available as a
bonus had a problem, so that the Light Lock probability was never set to 0. This is fixed in LX-8.

STTNG LX-8 18/22

4. Troubleshooting

• First game: trigger does not work, flipper buttons trigger catapult
Don't worry. That's normal. Once you pull the trigger on the gun handle the next game
should be ok.
• Weird switch error messages or strange behavior that won't go away after factory
resets
Don’t worry. Take out batteries for 10s. Put them in again. Everything should be fine.
However, if you are using NV-RAM, you need to manually erase it. If you can’t do that
you need to use a new, empty module.

NOTES

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STTNG LX-8 19/22

5. Appendix NZ – The Neutral Zone
5.1 The State of the Neutral Zone
Although with LX-7 the behavior of the Neutral Zone seems to be random - there is no random
generator in the Neutral Zone. The Neutral Zone has a state and it is always clearly defined what
will happen there if you light all targets.
Inside the firmware is a list with 24 entries. The list reads "F,C,R,L, C,R,F,L, R,F,C,L, ....." (F =
Ferengi, C = Cardassian, R = Romulan, and L = Lock)1

. So every 4th entry in the list is a lock. The

encounters are thrown in between the locks.
At the beginning of a game an index pointing into this list is calculated. This index is the “State of
the NZ” and determines which encounter is waiting there for you. If you finish an NZ Encounter,
the index is increased by 1 and the next entry in the list is the new state of the NZ. However: If
Borg Multiball was already played in the current game, an "L" (like "Lock") is skipped - you can
only lock balls in the NZ as long as you have not finished a Borg Multiball.
To initialize the state of the NZ at game start, a random "Lock" entry is found in the list. Then there
is an offset which is subtracted from its index. This offset is the number of NZ Encounters you have
to play before the NZ enters the “Lock” state. After a factory reset this offset is 1 and it is adjusted
every 240 games by comparing game statistics with the chosen "Multiball Percent" value. But for
the first 240 games the offset is "1", which means the state of the NZ is at the start of a game always
exactly one step before a "Lock". In other words, there is only one NZ Encounter to complete
before the NZ Lock becomes active. If the offset is then increased to 2 (after 240 good games), the
"Lock State" always comes after 2 or later after 3 NZ Encounters. As stated above there’s one
exception: if Borg Multiball has been played, then the "Lock” state is skipped (it is a little
complicated... you might have to read it two times).
And this is how the "State of the NZ” works. The Encounters are more or less random, but always
after 1+offset Encounters there’s a lock. The offset is adjusted only very sporadically. If you have
understood this behavior and count your NZ Encounters, the lock in the NZ will not surprise you
anymore, even with LX-7.

1) Actually it’s not F,C,R,L but 0,1,2,3. This here in green is the actual list from LX-7:

STTNG LX-8 20/22

5.2 Neutral Zone Target- and Lock-Lighting Behavior
And why there is Adjustment A.2 30 SHOW NZ LOCK in LX-8:

In LX-7 NZ targets can always be “activated”, unless there is a NZ Encounter already running. If a
regular mission is running (Time Rift/Rescue, etc), although you can "activate" the targets, the
according inserts won’t light up directly. But after the mission has been finished, you may simply
have a completely lit NZ.
Since you can only start NZ Encounters after the regular mission has been completed, the “NZ
target lighting behavior” is totally okay for NZ Encounters.
But you can lock a ball in the NZ while a regular mission is running - without being able to see the
state of the NZ targets. In addition, the lock-is-lit only comes when you light up the 3rd target. If the
ball then goes directly into the subway, it’s immediately locked. And the NZ Lock Insert was never
lit... And that’s what you have in LX-7: a lock insert for the NZ that’s almost never lit.

In LX-8 with adjustment A.2 30 SHOW NZ LOCK you can now make better use of the NZ Lock
Insert - without changes to LX-7 game logic:
If the NZ is in lock-state, then the NZ Lock Insert will now be lit by the 1st hit to the NZ. This
ensures that you can now see before the "decisive" 2nd or 3rd hit - that might go directly into the
subway - that there will be a ball locked once all NZ targets have been lit. If you hit the NZ good
two targets might get lit at the same time, so the Lock Insert definitely has to be lit after the 1st hit.
But only the insert will be lit earlier than in LX-7, the game logic is not changed. And "Lock is lit,
Sir" is played as usual only at the 3rd NZ target hit. Although the NZ target states are not visible
during regular missions at least the NZ Lock Insert will light or stay on during regular missions. So
you can always - even if you are playing a regular mission - see that there is a lock waiting for you
and it might be worth to shoot a ball into the NZ.
And together with Adjustment A.2 31 NZ-SUBW. ROLLBACK there won’t be any unexpected
behavior in the Neutral Zone.

STTNG LX-8 21/22

6. Appendix AH – Additional Hacks

6.1 Country Settings
Some STTNG machines have DIP switches on the MPU where language settings can be configured.
To reduce complexity, LX-8 ignores these hardware-coded country settings on the MPU.
Instead, "USA1" was chosen as default. This way, even if you have no DIP switches on your MPU,
you can profit from LX-8 default settings optimized for home use - without soldering or cutting
jumpers. If you still want to change the language, use adjustment A.1 21 LANGUAGE.

6.2 Volume Buttons
In LX-8, the VOL+/- buttons can be used while the coin door is closed. For instance, if you add
switches to the coin-reject buttons and connect them to the control panel, the machine’s volume can
be controlled without having to open the coin door.
Remark: When a game is running and the coin door is closed, no animation will be shown when
you change the volume, because it might abort running animations and interfere with game logic.

7. Appendix VP – Recommended VPin Settings

Virtual pinball STTNG tables usually have a scripted subway and adjustment A.2 31 NZ-SUBW.
ROLLBACK should be set to “N.F./LX7”.

8. Appendix RC – ROM Changes

Detailed description of ROM Changes can be found soon somewhere on the internet.

STTNG LX-8 22/22

https://www.pinballrom.com/_files/ugd/0a3635_1f0af8ba09644eb78d30e50f112cf374.pdf