SEROUT being unreliable

[Kamikaze47]

I tried to test the interrupt theory with a simple GIE=0 before SEROUT and GIE=1 after it, but disabling the interrupts makes my program do unexpected things and makes it impossible to test. But i'd say its a high probability that the interrupts are the issue.

So I guess i'll have to stick with the hardware USART and, as skimask suggested, multiplex its output.


*edit*: Using ASM interrupts as timing is important.