Hey guys,
I ran into a little problem when I tried to define more than two variables of DB type. For some reason, if I have more than two defined, the code does not execute at all!
here is what I'm talking about:
ORG 0h
msgWelcome: db 'testing... ',0
msgPortOn: db 'Signal ',0
msgPortOff: db 'No signal ',0
rest of code...
I can pick any two of the above and it works fine, but three doesn't work at all.

It assembles ok, but the chip does not execute the code. I'm using a Dallas 89c420

I'm I doing some stupid code error? maybe something I need to change?...
thanks in advance

Phil