F103: User Flash program runs happily despite BOOT0=1

[Peta_rj]

I would assume it should start the system bootloader. Instead, my app which is blinking a heartbeat runs happily.

When I put also BOOT1=1, system should boot from SRAM and because nothing's there, the LED should remain off. Which it does.

So why does my app run when BOOT0=1? I don't think the jumper is broken...

[Tesla DeLorean]

In the debugger or cold starting?

[Peta_rj]

Cold starting, as in: OFF->ON.

Also starting after reset (where I assumed the status of BOOT0 and BOOT1 was read also).

By the way confirmed this on other boards too, so the "not working" BOOT0 jumper hypothesis I had is getting less likely.