Isn't DVI bit-parallel (that's why it has so many pins) while HDMI is serial? Maybe you're thinking of DisplayPort?

Late edit: I was wrong - they're both serial.

Yea I should have been more specific DVI-A is gone.

That said last year I needed HDMI output used a tang nano 9k (£10) and GOWINs free IDE and IP cores were a breeze to use.

The DVI core basically takes what I remember being a VGA signal.

Their HDMI core IIRC just took a framebuffer.

So my complaining is probably in the vein of old many yells at cloud.