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Revision History: (Included for reference)

Revision 5.0 – NEW FOR OCTOBER 2021!

New feature adjustment adding run modes to the target bank and center ramp.
Bug fixes.

Improvements

Limits the repeat shot play of the center ramp returning to same flipper.
Reward for controlling a streak of shots to same ramp without hitting other shots.

Detailed changes description

Reference to the LA-4 revision.
Some of the description is not a change as such. But features present in the LA-4 revision too.
Withtaken to give a complete overview of how the target bank and center ramp works.

Adjustment 33, Motor bank, has been given the two additional options. Cheese and Streak.

Cheese:
1-2-3 targets made carry cross-balls, player individual.
If CHEESE is completed, a center ramp shot will close it.
If CHEESE is completed on a center ramp shot, it will close right away.
Locks made and multiball will not close the center ramp.
Collecting jackpot will not close the center ramp.

Streak:
Same as “Cheese” option in addition to.
If CHEESE spell out was completed only on the center ramp, from when the center ramp was opened,
a “Streak bonus” of 100K for each letter collected on center ramp is given.
Like this.
”CHEESE” on center ramp = 600K Streak bonus.
”HEESE” on center ramp = 500K Streak bonus.
”EESE” on center ramp = 400K Streak bonus.
”ESE” on center ramp = 300K Streak bonus.
”SE” on center ramp = 200K Streak bonus.
Last “E” on center ramp = no Streak bonus.

The Streak option is default on hard and extra hard pre-sets.

New “Streak run” display on center ramp shots, when a streak run is active.
New “Streak bonus” display (with “Go for the hole” sound call) on collect.

Center ramp display was incorrectly “Trap lane bonus”.
Now changed to “Ramp loop”, on shots out of a streak run (any configuration).

For the light kickback rule (3 center ramp shots), the counter is now reset at start-of-ball.
In Cheese/Streak modes: A center ramp shot closing the ramp will always light kickback.

A bug where the Increase score lamp would stay lit on next ball-in-play, fixed.
A bug where the Double scoring countdown display would stay active on next ball-in-play, fixed.
A bug where the MILLION and Build jackpot light show would stay active on next ball-in-play, fixed.

 

Note

Adjustment 33 has the following five options, per rev. LA-4, which are kept unchanged.
Ex. easy: 3-bank stays down rest of game.
Easy: 3-bank resets at start-of-ball. 1-2-3 targets made are preserved cross-balls, player individual.
Medium: 3-bank resets at start-of-ball.
Hard: 3-bank resets on Cheezy bonus collected. 1-2-3 targets made are preserved cross-balls, player individual.
Ex. hard: 3-bank resets on Cheezy bonus collected.

And the new settings for comparison.
Cheese: 3-bank resets on Cheezy bonus collected and on center ramp made when CHEESE. 1-2-3 targets made are preserved cross-balls, player individual.
Streak: 3-bank resets on Cheezy bonus collected and on center ramp made when CHEESE. 1-2-3 targets made are preserved cross-balls, player individual.

Every center ramp made still pays 100K on its own. The Streak bonus is extra.
A maxed Streak bonus sequence is 1.4M, all told, on 9 shots.

In rev. LA-4, the 3 center ramp shots to light kickback counter was shared between players. Considered a bug.
The counter is now reset each start-of-ball, and not reset when the center ramp is closed per collection of Cheesy bonus.

The European ROM defaults to the hard pre-set. This revision, based on the US ROM, defaults to the medium pre-set.
The hard pre-set is recommended.

Credits

Changes designed and implemented by Soren Worre.

Based on the revision LA-4 software released in 1989 by Williams Electronics Games Inc.

The author would like to thank the designers of this pinball machine.

 

Game Version L-4
Information was not known/available at time of listing

Legal

Copyright 1992, 2021 Williams Electronics Games Inc. & Planetary Pinball Supply Inc. All Rights Reserved.

The software is provided as-is, without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.

 

Sound Rom Set Info (Not required for CPU upgrade)

Revision History: (Included for reference)
Sound Version L-2

U4 : Checksum: CFB0

Speech Version L-1

U19 : Checksum: 69AF
U20/U21* : Checksum: 4454
U22 : Checksum: 944C

A separate U21 IS NOT INCLUDED – I believe there is confusion on various rom sets, and at some point mid-production, Williams moved the chip from u21 to U20. In mame and IPDB sets, this appears to be a duplicate of U20 and named U21 with the same data on the chip. So your particular machine may want you to put in it either slot U20 or U21, but not both…so only the 1 chip is included.

Weight .25 lbs
System 11 Roms

CPU Rom Set v5.0 [U26, U27], CPU Rom Set vL-4 [U26, u27], Sound/Speech Rom Set vL-2 [U4,U19,U21,U22]

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