Amiga Digital Video HDMI for the A500 and A600

[Lemaru]

Originally Posted by hooverphonique

The Pico doesn't have HDMI, but I suppose you meant to implement that using the I/O state machines then?

Well not me personally, as that's not my areas of expertise. But yeah, there's already people out there who are bitbanging hdmi.

Here someone has the Pi Pico outputting 1080p 60hz. Pretty impressive

https://youtu.be/mjFwR3feyV0

[hooverphonique]

Originally Posted by Lemaru

Well not me personally, as that's not my areas of expertise. But yeah, there's already people out there who are bitbanging hdmi.

Here someone has the Pi Pico outputting 1080p 60hz. Pretty impressive

[ Show youtube player ]

Yeah, that's pretty cool - and no, I didn't mean you personally implementing it

[lilwshu]

Originally Posted by lilwshu

My new monitor arrived today (Dell P1917S, 1280x1024) which supports 50hz, so I tried it on my V1 adapter in the A2000 and it looks SERIOUSLY GREAT. No detectable lag in SWOS so I will likely be very happy with it.

One issue I noticed however is that the top line of pixels is shifting rapidly left and right by about 1 pixel - has anyone else seen that?

The pixel shift issue also appeared on my A500 and was fixed by updating the software on the SD card (should have checked that earlier really).

[mlenardon]

Kipper if you are building any to sell let me know. Its nice to see you are local. I only know of a handful of Amiga guys here in TBAY. Most dropped off the face of the earth 25 years ago LOL. There are a few getting back into it again now which great.

Michael

[seb132]

It’s seems the ECS modes are working now for the A600 on the last revision...

[solarmon]

Has somebody already done an external version to connect to the RGB video connector, if that is at all possible?

[hooverphonique]

Originally Posted by solarmon

Has somebody already done an external version to connect to the RGB video connector, if that is at all possible?

No.. It snoops the digital video coming out of Denise - the RGB connector outputs analog video.

[solarmon]

Originally Posted by hooverphonique

No.. It snoops the digital video coming out of Denise - the RGB connector outputs analog video.

There are some digital RGB signals on the RGB connector.

Could the Pi possibly have another firmware that could use these instead, maybe?

[idrougge]

Those digital pins are for connecting your Amiga to a digital PC screen, giving you at best EGA-style colours.

[solarmon]

Ah, OK. Thanks for the clarification. Not really suitable then!

[RetroPanic]

Originally Posted by seb132

@kippee2k what is a SMDa1k ?

Looks great, is it available to order somewhere? Also where i find to order the HDMI Adapter? Regards

[hooverphonique]

Originally Posted by -Acid-

With different components is there any hope of an A1200 version being developed?

I had a look at the schematics, and it looks like it might be possible, but requires a jumper wire to composite sync (TTL) elsewhere in the Amiga, as it is not available on a Lisa pin (but is on Denise) and is used by this project.

[jasonsbeer]

Just thinking out loud...it should be possible to make this in a video card form factor for big box Amigas. A drop in solution like this would be intriguing.

[hooverphonique]

Originally Posted by jasonsbeer

Just thinking out loud...it should be possible to make this in a video card form factor for big box Amigas. A drop in solution like this would be intriguing.

That's an interesting idea - I think the same solution could work in all models. If not, maybe a jumper for the pixel clock might be needed to also support A4000.

Edit: The A4000 video slot is physically different to the OCS/ECS machines, unfortunately. Does anyone know if an old 12-bit color video slot card will work in an A4000 and just ignore the extra 18 pins in the extended slot?

[kipper2k]

The Amiga video adapter now supports OSD via the bluepill on a Gotek. Here is a pic.





Here is the thread to read up on it

Many thanks to IanSB for his work in solving it

https://github.com/c0pperdragon/Amig...ideo/issues/26

[kipper2k]

I just got my boards i done up for the a600 hdmi,


Here we go.







Looks pretty decent, need a few more tests

[seb132]

Wow, so you need to remove Denise, solder your board on the A500, then re-solder Denise on your board??

[kipper2k]

Originally Posted by seb132

Wow, so you need to remove Denise, solder your board on the A500, then re-solder Denise on your board??

nope, not at all, there is a square hole in the board so it lays around the denise, and you just solder the pads on it to the legs of denise, it is pretty easy

[wiz12]

Couldn't you just fit a PLCC socket over Denise to get access to the signals rather than soldering pads directly onto the chip?

[kipper2k]

Originally Posted by wiz12

Couldn't you just fit a PLCC socket over Denise to get access to the signals rather than soldering pads directly onto the chip?

Good question, No, that is no good. If you do that you will be unable to use fastmem boards, accelerators and other things that sit on the CPU, this is a low profile design that will not interfere with those things