New Life Games LLC
**Reel Slots** Gaming Machines => IGT S2000 and Vision Games => Topic started by: Simple Sam on March 18, 2014, 06:02:03 PM
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I decided to upgrade my MPU to a 504B so I picked up a board and a MML card; I already had another game and sound SIMM. Since I was a little nervous about making a mistake I also picked up the SG000363 and VX011GX1 chips (same as on my existing MPU). I assembled the whole thing, did the clear and key chip thing, and happily, it worked! I didn't change the strips because I wasn't ready for that. When I put the old MPU assembly back in (remember, I didn't touch it), I got a "call attendant" error message. I thought I would just be able to have a MPU already set up for another game and just quickly change it out; is that not possible?
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there is a MPU ID that is unique for each MPU.
Yes you can change MPU's but you have to clear the error just like when you change any of the EPROM's
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Changing the mpu will give you a call attendant error open the door it will give ram error turn the key 3 times until it tells you to push the mpu button and close the door it should initialize and start up you may have to do this 1 or more times . I think i have done this before ? P.B.
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I wasn't successful using the MPU button and decided it wasn't that much effort to clear and key it again so I am back in business. Maybe I will poke around a little later.