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Revision History (Included for reference):


CPU Release Version 4.50
Date July 25, 2006
File gpcpua.450 (English speaking, checksum $5EFF)
gpcpug.450 (German speaking, checksum $48FF)
gpcpuf.450 (French speaking, checksum $48FF)
gpcpui.450 (Italian speaking, checksum $40FF)
gpcpul.450 (Spanish speaking, checksum $27FF)


Changes from Version 4.30
– Changed coil fire for ball server to keep the coil from overheating
– Fixed 10 letter HSTD tables for the UK
– Fixed Tough Racing mode to turn off properly on a forced game restart.


CPU Release Version 4.30
Date January 24, 2006
File gpcpua.430 (English speaking, checksum $5FFF)
gpcpug.430 (German speaking, checksum $49FF)
gpcpuf.430 (French speaking, checksum $4AFF)
gpcpui.430 (Italian speaking, checksum $42FF)
gpcpul.430 (Spanish speaking, checksum $28FF)


Changes from Version 4.20
– Fixed a scoring problem in the pop bumpers
– Fixed a display problem with the Scanner award.

CPU Release Version 4.20
Date December 29, 2005
File gpcpua.420 (English speaking, checksum $5EFF)
gpcpug.420 (German speaking, checksum $48FF)
gpcpuf.420 (French speaking, checksum $48FF)
gpcpui.420 (Italian speaking, checksum $41FF)
gpcpul.420 (Spanish speaking, checksum $27FF)

Changes from Version 4.00
– Fixed a problem where sometimes player 2 would need more hits to start
the first garage mode than player 1.
– Fixed bug in Super Party that allowed uncollected super jackpots to carry
to other players.
– Improved burn-in test.
– Fixed tournament to award points properly for an extra ball (the lamp is
still lit, however)
– Extra Ball now awards 5 million points in tournaments instead of 1 million.


CPU Release Version 4.00
Date October 25, 2005
File gpcpua.400 (English speaking, checksum $4BFF)
gpcpug.400 (German speaking, checksum $35FF)
gpcpuf.400 (French speaking, checksum $35FF)
gpcpui.400 (Italian speaking, checksum $2EFF)
gpcpul.400 (Spanish speaking, checksum $EEFF)

Changes from Version 3.52
– Improved the driver for the car mechanism to prevent wear on the
release coil latch.
– Improved and more efficient firing of lower track exit diverter.
– Better compensation when the Test Car switch is broken. Modes will
start properly now.
– Improved speech, lamp effects, and choreography.
– Russian coinage and tournament settings added.


CPU Release Version 3.52
Date October 13, 2005
File gpcpua.352 (English speaking, checksum $8EFF)
gpcpug.352 (German speaking, checksum $78FF)
gpcpuf.352 (French speaking, checksum $78FF)
gpcpui.352 (Italian speaking, checksum $71FF)
gpcpul.352 (Spanish speaking, checksum $21FF)

Changes from Version 3.51
– Fixed another glitch in switch test diagnostics.


CPU Release Version 3.51
Date October 12, 2005
File gpcpua.351 (English speaking, checksum $50FF)
gpcpug.351 (German speaking, checksum $3AFF)
gpcpuf.351 (French speaking, checksum $3AFF)
gpcpui.351 (Italian speaking, checksum $33FF)
gpcpul.351 (Spanish speaking, checksum $E4FF)

Changes from Version 3.50
– Fixed glitch in switch test diagnostics.


CPU Release Version 3.50
Date October 7, 2005
File gpcpua.350 (English speaking, checksum $44FF)
gpcpug.350 (German speaking, checksum $2EFF)
gpcpuf.350 (French speaking, checksum $2EFF)
gpcpui.350 (Italian speaking, checksum $27FF)
gpcpul.350 (Spanish speaking, checksum $D8FF)

Changes from Version 3.40
– Changed UK1 pricing table settings.

CPU Release Version 3.40
Date October 4, 2005
File gpcpua.340 (English speaking, checksum $4CFF)
gpcpug.340 (German speaking, checksum $35FF)
gpcpuf.340 (French speaking, checksum $35FF)
gpcpui.340 (Italian speaking, checksum $2DFF)
gpcpul.340 (Spanish speaking, checksum $E2FF)

Changes from Version 3.21
– Changed car mechanism driver to prevent fatigue on release coil bracket.
– Fixed multiball sequence when there are only 2 balls playable in the game
– Right ramp diverter logic improved to help player complete RACE letters

CPU Release Version 3.21
Date September 26, 2005
File gpcpua.321 (English speaking, checksum $D4FF)
gpcpug.321 (German speaking, checksum $BEFF)
gpcpuf.321 (French speaking, checksum $BEFF)
gpcpui.321 (Italian speaking, checksum $B7FF)
gpcpul.321 (Spanish speaking, checksum $71FF)

Changes from Version 3.20
– Made truck kick softer after powerup on Grand Prix builds.

CPU Release Version 3.20
Date September 26, 2005
File gpcpua.320 (English speaking, checksum $B7FF)
gpcpug.320 (German speaking, checksum $A2FF)
gpcpuf.320 (French speaking, checksum $A1FF)
gpcpui.320 (Italian speaking, checksum $9AFF)
gpcpul.320 (Spanish speaking, checksum $54FF)

Changes from Version 3.10
– Better compensation for a broken car mechanism
– More improvements to truck kicker system.

CPU Release Version 3.10
Date September 23, 2005
File gpcpua.310 (English speaking, checksum $B7FF)
gpcpug.310 (German speaking, checksum $B8FF)
gpcpuf.310 (French speaking, checksum $B8FF)
gpcpui.310 (Italian speaking, checksum $B7FF)
gpcpul.310 (Spanish speaking, checksum $54FF)

Changes from Version 3.01
– Truck kicker eject softened to keep balls from flying off the ramp
– Fixed glitch in track test in diagnostics
– Improved coin-in lamp effects
– Fixed Grand Champion reset
– Extra Ball properly awards points in all modes of ToPS play
– Game obeys the Special % adjustment properly
– Fixed case where Champion Challenge would be lit again after it’s end
– Made LOCK DIFFICULTY not reset R-A-C-E lamps at the start of each ball
when set to “Extra Hard”
– Fixed game restart at match and game over sequences
– ToPS improvements for South Africa
– New default Norway coin settings

CPU Release Version 3.01
Date September 12, 2005

Changes from Version 2.00
– Fixed coinage settings for Taiwan and South Africa
– Fixed service credit button not responding after adjusting volume
– Softened kick on truck kicker to keep ball from falling off the ramp
– Fixed hanging Final Practice jackpot lamps
– Fixed CHAMP1 count in Instant Info
– Improved firing of lower racetrack exit
– Fixed Trough Clear test in diagnostics
– Added some more lamp and sound effects
– Tournament system improved
– Game does not search endlessly if there are no balls in the trough

CPU Release Version 2.00
Date August 23, 2005

This is the first production release of GRAND PRIX.

There is no charge or cost assessed for the software itself contained on the chips. Software remains property of the respective author / manufacturer / copyright holder, who has made the software freely available to the pubic for the purpose of repairing your own machine. We do not sell or claim ownership to ANY software. This listing is ONLY for the cost of the chips themselves, and the service of programming them for you in a format that can be installed in your machine.

Weight .25 lbs
Stern Options

CPU v4.5 / DISP v4.0 Set [U210, U5], Sound ROM [U7], Voice ROM 1 [U17], Voice ROM 2 [U21], Voice ROM 3 [U36], Voice ROM 4 [U37], BLUE DOT PAL [U213]


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