MCP3201 problems

[fratello]

Thanks for reply !
I attached iin my first post the Proteus simulation and the pbp file ... I used 16F676 for "driving" six resistors (for Sony players); MCP3201 must read the valiues of the steering wheel commands. But no matter what button I press, there are only two or three commands of six (Vol +, Source and seek+) and sometimes the same button does one of the three commands, randomly...