Inspired on chat64 cart by Bart Venneker and Theo van den Beld (https://github.com/bvenneker/Chat64), same hardware with some midifications:

• SD card
• 27C512 EEPROM
• add jumpers to select 8k memory inside EEPROM
• add transistor to control EXROM line
• standart or ultiMax mode jumper

About the code: The arduino skeck and ACME assembly code are a working progress, there are many bugs to fix, expecialy SD directory code. Not all SIDs file are playable, same as PRG file.

Feaures:

• Run PRG file

• play SID files and show SID info

• show koala images

• show current time

• show current weather

• show news by using 2x2 charset

  Video to show the cart in action: https://www.youtube.com/watch?v=Q0KYe2STK2w

Any help is appreciate, Have fun!

Matteo