exxos's Atari, Amiga & retro forum

Hi, thank you for confirming. So, based on your confirmation, I have put a Dupont cable between pin2 of HI-2 and LO-1 to test it, and the TOS came back to life. Unfortunately, the Diag Cartridge is still not working. I suspect that I have broken some traces while removing the sockets to install the dual tos. I will start the hunt for the problem.
I will keep you posted, if you like.

Thank you for your help

Monotamp3 wrote: 02 Oct 2026 19:53 I will keep you posted, if you like.

Sure! You can't keep your readers in suspence :)