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Author Topic: Aristocrat / IGT Reel alignment  (Read 2995 times)
reelomatic
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« on: April 11, 2011, 03:14:07 AM »

Hello all,
I am working on a 1983 model Aristocrat 3 reel nickel machine.
The jackpots are all screwed up, and I have been quite unsuccessful at setting the wheels to hit the proper jackpots.
This machine uses optical sensors to read the location of the wheels.
And if it matters, someone may have switched out the original reels with another machine for whatever reason.  I do not think that the reel strips have been removed from the reels and reattached.

If any of you could offer advice in synchronizing the reels with the jackpot payouts it would be greatly appreciated!

The only thing that I know to do is to wait for the big jackpot to lineup so I can adjust the wheels at that point!

Thanks in advance!
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reelomatic
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« Reply #1 on: April 18, 2011, 07:55:44 PM »

Does anyone have any clue whatsoever?
Is this post in the correct forum?
Please advise.
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Ron (r273)
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« Reply #2 on: April 19, 2011, 12:29:42 AM »

Welcome to NLG forum, reelomatic. Hope someone will step up and help you. I only know a little about IGT's so I'm not much help.

Ron (r273)
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Op-Bell
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« Reply #3 on: April 20, 2011, 01:14:18 AM »

The reels may have been swapped around so they are not in the right places, or someone may have put in the wrong software for your game, or they may have swapped the reels from another game, which amounts to the same thing. You can only determine that by reading the EPROMs and examining the code.

Manual sent.
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reelomatic
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« Reply #4 on: April 20, 2011, 10:28:24 AM »

Thanks Op-Bell.

It looks like I have a little work to do on figuring out how to read an eprom now!
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« Reply #5 on: April 22, 2011, 03:08:49 AM »

It's a 2716, you may have trouble finding a programmer that can do it, but it will read as a 2764 by making 4 copies in memory. The one to dump is the first one, A800. You will find the reel strips set out around offset 0x0C0, they will look like this - this is the ROM from a 5 reeler. Immediately following the strips are the win combinations in the same style. What that looks like disassembled is this:

Code:
; reel strips, 22+2 each
; C cherry
; O orange
; L lemon
; P plum
; B bell
; M melon
; * star
; = bar
; 7 seven

strip_1: ; cA8BEc:
STRING "P7LOBCO=M*OMC7OBLM=MCOP7"

strip_2: ; cA8D6c:
STRING "P7PBPMC*POPCLMP=PCPOPCP7"

strip_3: ; cA8EEc:
STRING "*7*C*MCO*C*BC=*C*P*C*L*7"

strip_4: ; cA906c:
STRING "L7L*LBLMLBLP=OLBLBLMLBL7"

strip_5: ; cA91Ec:
STRING "O7OPO=OMOLOP=BOMO=OPO*O7"

; win combinations and payout reference number
cA936C: STRING "77777"
BYTE $1 ; 5000 $1388

cA93Cc: STRING "====="
BYTE $2 ; 2500 $09C4

cA942c: STRING "BBBBB"
BYTE $3 ; 250 $00FA

cA948c: STRING "*****"
BYTE $3 ; 250 $00FA

cA94Ec: STRING "MMMMM"
BYTE $3 ; 250 $00FA

cA954c: STRING "LLLLL"
BYTE $3 ; 250 $00FA

cA95Ac: STRING "PPPPP"
BYTE $3 ; 250 $00FA

cA960c: STRING "OOOOO"
BYTE $3 ; 250 $00FA

cA966c: STRING "ANY47"
BYTE $4 ; 200 $00C8

cA96Cc: STRING "ANY4="
BYTE $5 ; 100 $0064

cA972c: STRING "ANY4B"
BYTE $6 ; 50 $0032

cA978c: STRING "ANY4*"
BYTE $6 ; 50 $0032

cA97Ec: STRING "ANY4M"
BYTE $7 ; 20 $0014

cA984c: STRING "ANY4L"
BYTE $7 ; 20 $0014

cA98Ac: STRING "ANY4P"
BYTE $7 ; 20 $0014

cA990c: STRING "ANY4O"
BYTE $7 ; 20 $0014

cA996c: STRING "ANY37"
BYTE $8 ; 18 $0012

cA99Cc: STRING "ANY3="
BYTE $9 ; 14 $000E

cA9A2c: STRING "ANY3B"
BYTE $A ; 10 $000A

cA9A8c: STRING "ANY3*"
BYTE $A ; 10 $000A

cA9AEc: STRING "ANY3M"
BYTE $B ; 5 $0005

cA9B4c: STRING "ANY3L"
BYTE $B ; 5 $0005

cA9BAc: STRING "ANY3P"
BYTE $B ; 5 $0005

cA9C0c: STRING "ANY3O"
BYTE $B ; 5 $0005

BYTE $0

A9C7c: STRING "CCC--"
BYTE $A ; 10 $000A

A9CDc: STRING "CC---"
BYTE $B ; 5 $0005

A9D3c: STRING "C----"
BYTE $C ; 2 $0002

BYTE $0

pay_table: ; cA9DAc ; decimal
WORD $1388 ; 5000
WORD $09C4 ; 2500
WORD $00FA ; 250
WORD $00C8 ; 200
WORD $0064 ; 100
WORD $0032 ; 50
WORD $0014 ; 20
WORD $0012 ; 18
WORD $000E ; 14
WORD $000A ; 10
WORD $0005 ; 5
WORD $0002 ; 2

cA9F2c: WORD $1388 ; 5000



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