Leaderboard

Good evening all, Well finally got hold of a Barcrest Hi Lights, my first Mpu2 as well. I am delighted. Came to me as a non runner, and it's taken a little bit of work to get running, but with the help of the Mecca folk's, it all came together!

Excellent well you got there in the end 😄 when i got the machine it apparently hadn’t worked for years and had been stuck in a store room with a load more machines I purchased …. I am glad it’s gone to a good home 👍

MPU3 Checksum Removal Found that the Cabaret 100 rom set had the checksum code in place that blocked any changes. Reviewed at the Line Up code and the solution applied and looked for a similar sequence in the Cabaret dump. Here is the Line Up code and the solution for the checksum bypass was to remove the JSR Z7081 line by changing the bytes in the HEX file from BD 70 81 to 4F 4F 4F The Cabaret 100 the code looks like this: In particular I looked for the STA MA000 and LDB #$03 commands, the sub routine addresses are different due to the different size of the files and different content. To remove the JSR Z75AB line to bypass the checksum routine, this is done by editing the code and changing the BD 75 AB to 4F 4F 4F as the Line Up. This was saved and ran up fine in the emulator and now allows changes to the code and doesn't hang on boot up. Out of interest I enclose a copy of the Line Up and Cabaret 100 disassembled code. Thanks to @Road Runnerfor the original shared solution for the Super Line Up. lineup.rtf d16_2.rtf