Well, beautiful. I comment out the 3 wsaves and everything came out as planned. I tested the 628 on my breadboard and the led blinked as expected. After that triumph I load your Serialin (I called Parallel to Serial) program and compiled it. I got one error only
“Error [118] C:\program~1\mecanic~1\mcs\parallel~3 asm 200:Overwriting previous address contents(2007)” As always I try to find that error on the posts and I did but I don’t understand how to fix it. Thanks.