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stonyat421

mpu4 m607 chr needed

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looking for a m607 chr to help a friend put his machine back onto its original game 

any one got one in the spares box 

cheers 

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Cheers For the help tony , hopefully someone will have a spare one hidden away in a old mpu4 program card 🤞

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m607 chr chip.

I think that's the one I was after for my

Blue Moon?

What machine is it Tilly?

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Posted (edited)

Yep your correct chris it’s a blue moon it’s currently on £6 jackpot and I’m trying to get it back to £4.80 

Edited by Tilly1
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19 hours ago, Line Up Chris said:

m607 chr chip.

I think that's the one I was after for my

Blue Moon?

What machine is it Tilly?

yeah spot on chris his chr does not match the new one on 4.80

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That's exactly why barcrest used CHR chips to stop operators just changing prizes without having to give barcrest more money!

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On 8/25/2020 at 1:12 PM, stonyat421 said:

looking for a m607 chr to help a friend put his machine back onto its original game 

any one got one in the spares box 

cheers 

You could always ask James sharpe to take the chr out for you.

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13 minutes ago, mark300 said:

You could always ask James sharpe to take the chr out for you.

😂 now come on mark you should no better than that 😉

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1 hour ago, mark300 said:

You could always ask James sharpe to take the chr out for you.

does this MPU4 not have a lamp map in the CHR chip then?

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7 hours ago, Andrew96_ said:

does this MPU4 not have a lamp map in the CHR chip then?


I think the latter ones did.

 

it can’t be too hard to get round tho as it’s a matter of putting the lamp map into the rom an re routing the code address routines that look them up.

 

 

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6 hours ago, Road Runner said:


I think the latter ones did.

 

it can’t be too hard to get round tho as it’s a matter of putting the lamp map into the rom an re routing the code address routines that look them up.

 

 

the lamps are all out 😉

and as for re routing the code address routines its not something i can do myself at the moment 😁

 

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3 hours ago, stonyat421 said:

the lamps are all out 😉

and as for re routing the code address routines its not something i can do myself at the moment 😁

 


I will have a look at that in the near future 

 

can someone upload a DX for MAME?

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3 hours ago, Road Runner said:


I will have a look at that in the near future 

 

can someone upload a DX for MAME?

sent mate😉

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On 8/26/2020 at 2:47 AM, Line Up Chris said:

m607 chr chip.

I think that's the one I was after for my

Blue Moon?

What machine is it Tilly?

 

I thought this rang a bell somewhere.

 

 

I'm not letting this go at the moment as its being used for an ongoing research project along with some other CHR chips.

 

 

This was from that Northampton raid 

 

M607.jpg.3a996c23689b7b0e5955a2ae61aa5de2.jpg

 

 

 

 

 

 

 

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Posted (edited)
2 hours ago, Road Runner said:

 

I thought this rang a bell somewhere.

 

 

I'm not letting this go at the moment as its being used for an ongoing research project along with some other CHR chips.

 

 

This was from that Northampton raid 

 

M607.jpg.3a996c23689b7b0e5955a2ae61aa5de2.jpg

 

 

 

 

 

 

 

seems to be a few projects on these chr chips 😉i got a new toy on its way

gal programmer.jpg

Edited by stonyat421

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I don’t mind testing the chr’s for you 😉 MATE 😂

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57 minutes ago, Tilly1 said:

I don’t mind testing the chr’s for you 😉 MATE 😂

you no your my right hand man dave :D

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If this works out with the chr’s how many machines will be saved 👍I might even find a nudge nudge wink wink on £4.80 or be able to convert a £6 back to £4.80  fingers crossed one turns up 🤞

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27 minutes ago, Tilly1 said:

If this works out with the chr’s how many machines will be saved 👍I might even find a nudge nudge wink wink on £4.80 or be able to convert a £6 back to £4.80  fingers crossed one turns up 🤞


 

don’t worry 

 

this will be cracked but it just takes time 

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37 minutes ago, Road Runner said:


 

don’t worry 

 

this will be cracked but it just takes time 

And patience 😁

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Posted (edited)

 

Here is a first step for anyone with a Bluemoon to try.

You will need a hex editor,a programmer and some roms(obvs)

 

With a hex editor load the rom file attached with this post(not sure about any other versions)and scroll down to address $4000

 

The exact address is $4001(shown in the red square)

 

Crack.jpg.c18e266602585fcf4ee762d3b546ecff.jpg

 

If change that byte to 02 it will disable the rom checksum routine that verifies that the rom has not been altered or is corrupt.(Binary %0000 0010)

if you change that byte to 01 it will disable the CHR chip check but you will get a checksum fail as you need to set bit 1 as above.(Binary %0000 0001)

so change that byte to 03 to disable both(Binary %0000 0011)

 

I don't have a machine here for checking the CHR loading of lamp sequences etc.(i am only using MAME) so here is a table below on what i have discovered with byte $4001.

Crack2.thumb.jpg.1d15df31746656a1d1139716beedba40.jpg

 

Can somebody with a machine or test rig,experiment/correct/update etc.

 

 

Use on a machine at your own risk etc.

 

  

blu23.bin

Edited by Road Runner
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