There seems to be some quantitizing error making it hard to follow in the picture. It will make it easier if you put a little dead time between bytes.

_________________
http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?

How can I do this? Put a little dead time between bytes?

The easiest would be to just put a delay loop between bytes as you send them, to take up enough time that you can clearly see the marking time in between, then see the start bit for each byte.

_________________
http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?

I'd suggest you sample at least 4x faster - or post an image at least 4x wider, which is what I really mean. See the narrowest pulses? They have different widths in the image you posted, but in reality they must all be the same width. For anyone to figure out the bit boundaries, they need an idea of where bits start and end, so a bit more resolution would be helpful.

Check the cables, that you have the right serial port selected and the right baud rate.

You can check your serial port is working by looping TXD back to RXD and sending a few characters.

_________________
Andrew Jacobs
6502 & PIC Stuff - http://www.obelisk.me.uk/
Cross-Platform 6502/65C02/65816 Macro Assembler - http://www.obelisk.me.uk/dev65/
Open Source Projects - https://github.com/andrew-jacobs

Hello guys. It's me one more time.

I checked the cables, looped the TX and RX and I can receive the sent characters correctly.

I'm using a baudrate of 9600. Below is the logical analysis of when I press some character on the keyboard. Look through the zero channel of the analyzer that nothing happens.



Below the analyzer brings the result of when I press the reset. I tried to increase the resolution. See if you can see better this way. Because of the resolution of my notebook, I could not get a better print. NOTE: Images are not on the same time scale. The first catch event is very fast.

Folks! Good news.

It worked. The problem was in the ACIA baudrate. I use a 1.8432 MHz crystal connected to ACIA ports 6 and 7. Port 7 before was connected to a capacitor and it was on GND. I removed the capacitor and it worked. The baudrate of 9600 was accurate!

  : D: D: D: D: D

A long time ago I was not so happy to see a Hello World! on my screen!

I'll send more news. Thank you all!!!

(You found your problem while I was composing this - I made a mistake at first and got nonsense, but corrected myself and now it shows that it is possible to decode serial data manually.)