Casio-Inside

As for now this manual show how to dump rom using one of these two official Lapis/OKI branded programmers:

• uEASE
• EASE1000 V2

Description of test pads on calculator (click to enlarge):

Connection between programmer and target (calculator):

• Download and install LEXIDE-Ω development tools.
• Download additional target definitions and copy to corresponding directories in C:\U8Dev\

• In menu start find and run DTU8 Debugger
• In newly opened window select target:
  
  and click OK
• If connection is correct you should see window asking for Security ID:
  
• Enter this: FFFF FFFF 7379 6771 5961 4753 4143 3137 2329 1719 1113 2307.
  (BTW: This password is stored in calculator ROM at address 0xFDE0 in reversed order.)
• When password is accepted in main DTU8 window select from menu: File > Save program to file… and provide file name to store rom.
• Rom will be saved to file
  

• Find out how last 8 bytes of security ID was obtained
• Prepare procedure to flash rom
• Create better target file as current one uses larger rom window than necessary

• https://github.com/mc-sdx/CWI-hacking/tree/master
• https://github.com/CalcWorld/CalcCore/tree/master/rom_dump
• https://github.com/Natsuki-Min/PicoEASE/
• https://gitee.com/mc-sdx/calcracker