Leaderboard

Spent some time working on making some MPU3 program cards. I followed the same process as I did on the SRU cards but took onboard some of the learnings when getting the Gerber files made. This time I used the fiver service again but spent time double checking the circuits to make sure that there weren't any shorts between the tracks etc. Here are the scans of the original boards with the components removed.

In the spirit of sharing, here is the Gerber file for the MPU3 program cards. Cheers Ed MPU3 V2.zip

Here is the layout of the new boards:

In the spirit of sharing, here is a copy of the Gerber files for the SRU program card. Cheers Ed JPM9980_EC.zip

Top job as standard.

Some final testing on my machine Burned an eprom and ran up the modified code on my machine. Managed to take a gamble to £100 but to my surprise it didn't collect at £102.40. The gamble limit makes total sense in a commercial machine, it is possible to gamble from 20p to £100, very doable and with bigger wins very lucrative odds. Here is a video if the gamble: I double checked the code and tested the same gamble sequence on the emulator and found that the code below needed a small mod. The command CMPA #$10 looks for the tens ram address of M0086 to be greater than 10. So will payout when the M0086 is greater than 10 which related to £110. All my testing gave a win of around £112 for I didn't notice this. The mod needed is to change this value to 9 so a win of £100 correctly initiates the auto collect. Here's the code: With this small change the machine now collects at > £100 rather than > £110. Attached is the updated eprom file and the disassembled code. spls9f 5 credit £100 Limit V2.zip spls9f2 £100 limit V2.rtf