Interstate 75 Original UART Not working

Does uart work on here. I cannot get any data across. I’m trying to control i75 with a pi. A0 and A1 seem to not do anything. And I heard a rumor that int and gnd are mixed up but that didn’t help either.

Ground and Int aren’t mixed up, not on mine anyway. I have some i2c breakouts wired up.

According to the schematic
GPIO26/ADC0
GPIO27/ADC1
GPIO28/ADC2
interstate_75.sch
And looking at the Pico Pinout
GP28 A2 RX
GP27 A1 TX
GP26 A0 SCK
Raspberry Pi Pico GPIO Pinout

Shouldn’t you be using A1 and A2, not A0 and A1?

Oh man, I don’t know I spent so many hours today on A0 and A1. I’m going crazy. Maybe your right. I was about to throw this thing away.

That’s what it looks like to me. I’m not using UART on mine though. I program it from Thonny, via USB. Then just let it do its thing.
And I think it goes?
Pi TX to Pico RX
Pi RX to Pico TX