>>so, how do you know that "I'm finally able to download the code " <<
To be honest , I do not really know.
But the LED on the board did indicate that the board has received "something" from the computer. And this LED didn't do that before I used a different prog.

>>what code is it, is it 'blinky' or something you wrote? <<
even more simple than "blinky" , since I'm a beginner,
I want to see if this board works at all and how to get it working.

.org h'0000
start: mov a,p0 ;read the switch
mov p1,a ;write to the led
sjmp start ;go to start
Got that code from a tut linked to from this page.


>>??? does this mean LED and resistor between port pin and gnd? <<

NO it doesn/t, I have read already, that that's not the way
to go. LED and res. between port and +V


>>is it a secret which company? <<

Ha, ha! Funny this, no it is of course not secret but I doubt anybody would know it.
It's called ETT.