find a new vdp for msx

That's why I asked NYYRIKKI. Maybe he was expecting that V9990 should be properly initialized during boot.

I think we need to consolidate things a little:

• We have plenty VDPs for MSX (even if none of them are suitable to "modern" VGA monitors). There isn't enough software to V9958 and V9990 to call it plenty, and both are pretty capable chips.
• We have more than plenty sound chips. (I don't think there's anyone complaining about this, but...)
• There isn't enough code for R800, we are only taking advantage of its greater speed. Z80 is pretty straightfoward to us, I don't think we'll need anything more powerful than a fast Z80 (even if I personally would like to have a proper math/floating point processor because I like plotting graphics on MSX using BASIC)

So, even if it's cool, I don't think we'll need more than this... Just a proper V9990 card to avoid using two monitors, and pehaps a stable turbo kit.

What strange.! the video9000 from my friend starts normal up. MSX boot logo is viewable etc.
Are you maybe in the war with Gfx9000 v1.0.? That has a limited superimpose function that works like you say.

the Gfx9000 v1.0 box looks out almost the same as Video9000

Got it!
That's a small but useful feature that Video9000 could have back in the day. I would also map one keyboard button (maybe SELECT, or even CONTROL+SELECT or SHIFT+SELECT) to select make V9990 transparent, as not all programs do it and you'd end "typing in the dark" as well.

GFX9000 <> Video9000.
GFX9000 is just the V9990 VDP plus its VRAM and a Video Encoder (so the cartridge can have Composite and SVideo outputs). This is true for ANY MODEL of GFX9000 or clone (Tecnobytes Powergraph)

Video9000 is everything inside the GFX9000 plus Genlock, Digitizer and Superimposer features. It has video outputs and video INPUTS. Theres a dedicated input for MSX's RGB output, and there's also a Composite Video and a SVideo inputs. You can superimpose V9990 image on top of any Video9000 inputs, either MSX internal VDP or composite/svideo inputs (so you can create video effects or add subtitles to a movie for example. You can also digitize images from the video inputs, like you do with Sony's HBI-V1 (hey, look, thats me demonstrating my HBI-V1! Sorry I didn't spoke in english) The difference here is the HBI-V1 has only one video input, and Video9000 has three.

Externally looking, the GFX9000 has the size of a big MSX cartridge. (the GFX9000 v1.0 and Tecnobytes Powergraph are both big cartridges, while the later GFX9000 are a little smaller and have the size of the HBI-V1 cartrige, almost a "medium size"). The Video9000 cartridge, (never saw one in person) is way bigger, about the size of a external disk drive unit that you hook on MSX trough a small cartridge and a flat ribbon cable.

I think I am too radical here... but I think ASCII should never released V9938 as it is. I think it should be as V9958 from the beginning.

Hmm... Maybe my memory just does not serve me well... It's been anyway almost 15 years since I last time hooked it up.