LCD and SID problems

[LenweTasasartir]

Hi guys!

I've changed MIDI interface to working one, and I'm possible continue creating my MB-SID.

Let's begin from LCD:

When I power everything on, black bar appears on LCD and after some time it goes blank or...

It displays something what's on the photos.

Datasheet: http://sklep.avt.pl/photo/_pdf/BTHQ_22005VSS.pdf

And SID:

I've napierzaza Double SID module with 2x8580's.

Testtone runs well, sounds clear, has 1kHz. But if I change app to sid synt, and play something on keyboard it sounds strange. In sounds.mp3 I've attached recording which contains 6 ocataves played from low to high.

Have anybody has any idea?

sounds.mp3

DSCN4154.JPG

DSCN4155.JPG

DSCN4156.JPG

sounds.mp3

[TK.]

Both is strange.

LCD: you considered the 4bit interface (D0-D3 should not be connected)?

LCD interconnection test done?

Strange Sound: it's interesting that the waveform and volume (or ADSR setting?) changes while you are playing different notes. It could either be a powering problem, connection problem or firmware upload problem - hard to diagnose via remote, but let's start with the power problem: does it also sound so strange when the LCD (and especially the backlight) is *not* connected?

Best Regards, Thorsten,.

[LenweTasasartir]

Ok, LCD problem solved. E pin was partly disconnected in some way.

On LCD interconnection test, after going out from E line test, LCD goes blank.

After fixing second SID audio channel, I was going to check how this one sounds.

Checked testtone - clear.

If done SID interconnection test, i've lower volatages on A3 and A4 (3,5V, but I've uncalibrated multimeter...) , +5 at rest.

Unfortunately when I'm trying to start MIDIboxSID app, it restarts on "Launching CS".

Thanks for help ;)

EDIT:

Same without SIDs board.

DSCN4166.JPG