[Solved] My new ST2320L crashes connected Amigas?!

[ciVic]

Hi all,

I've bought the 23" Monitor ST2320L from Dell since it can display the good old PAL screens. But when it is connected during startup it crashes my Amigas. I tested it with two A4000D. Both cannot show the Early Boot Screen, they reset in a loop. When I disconnect the monitor they can boot, and then I can connect the monitor and see my good old PAL screen. Can somebody help me? It's not very comfortable to disconnect the monitor on every boot.

[ciVic]

Possibly too much load on the sync lines, so the Amigas try to sync to a non-existant genlock.

Sounds possible, but sounds as there is no solution (besides unplugging the monitor)?

[ciVic]

Unfortunately I only have one adapter. The adapter itself, without a monitor, does not crash the Amiga, but I think that does not mean anything. I could put a transistor on my adapter on my own, but maybe there is one from amigakit or vesalia I could buy? Would be easier. Or maybe I should buy a genlock, then my Amiga has something to sync :laugh1:

PS: For my original Zorro Busboard I have a flicker fixer. Plugged into this card I have no problems.

[ciVic]

The VGA adapter I use was purchased from Vesalia and works great. I believe amigakit has them as well, but you'll probably want to email them first.

Do you know if it also uses the 74hct08? I live in germany, therefore I would buy it at vesalia anyway. Would be great.

[ciVic]

Hi ciVic,

See   http://www.wonkity.com/~wblock/a4000hard/connvga.html

I hope this helps.


Regards, Michael

aka rockape

Hi rockape,

oh yes, nice link. Sounds easy to make an adapter with two vga connectors and a TTL IC. Thank you!

[ciVic]

Thanks to all! I built an adapter as described in the link by rockape and it works! Ok, I took my old adapter and soldered the IC into it. Looks a bit clutter, but fits into the original small case.