My specific question is:
In the code I have there is a line that is:
outportb(Puerto+3,0x80);/*Pone DLAB en 1*/
From what I read this DLAB is a bit that is in the LCR (Line control Register) bone port + 3, access the LCR register, and with 0x80 (which in decimal is 128) activates the DLAB ...
Someone could tell me how it is that with that 0x80 activates the Dlab, I mean ... because is that value in particular? the 0x80?
I read that there are some values of Divider Latch Low Byte (I do not know if it has to see) and one that puts at a speed of 300Bps the value is 80h
I'll be waiting for your response guys