Amiga DB23 To Beta3 Pin Header Mapping

[mrgo0se]

Hi,

Is there an existing schematic/diagram anywhere showing the exact pin mapping between Amiga DB23 and the Beta3 PCB pin header signals, including appropriate grounds?

I am fairly confident that I have this wired correctly and get display/diagnostic menu on screen but only alternating black screen and garbled video signal output.

If you could post a mapping in the repo for wiring using CSYNC and alternatively HSYNC/VSYNC via the DB23 that would be great.

I'm also using the WM8214 AFE rather than the WM8213 if that makes any difference?

Cheers.

[mlorenzati]

The picoRGB2HDMI is generalistic to use any retrocomputer with RGB or RGBi output (prior converting signal) that's why I do not add a circuit to the DB23 since its just pin to pin connection.
The board can use either CSYNC or HSYNC+VSYNC.
For the first one, leave board HSYNC Grounded and connect Amiga CSYNC to the board HSYNC.
Check here the pinout of Amiga https://inanis.net/amiga-500-to-amiga-1084-rgb-cable/
You can use one or the three ground amiga pin 16,17,18

Regarding WM8214 is compatible with WM8213 but faster, I saw that it might have a slightless timing difference that could shift colors. For sake of simplicity I'm about to push in this days a feature to manage gain/offset per RGB color.