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This is the unit: https://irkenlabs.com/product/jvs-pac-2/ Basically it transforms JVS to keyboard. Where is the source code for the MEGA JVS ?

Very nice, thanks for making the effort!

Wow, thank you very much!

The problem with the NAND carts is that the NAND chips are long past their expected lifetime. Not too long I helped some people moving from Triforce NAND to DIMM. Of course that required several new Triforce units.

Hmm I updated that post last night.

This multi is for the original TTX hardware not the TTX2.

Please start a new thread with your build details and post the link here and we will follow :)

Not kick harness JAMMA harness. If you do not have a JAMMA harness or a JAMMA setup you will need a supergun like this to play the games: https://rgbslab.com/products/has-v5-0 If you just want to verify your setup just get your JVS IO powered with 5V and see if the ttx boots up.

CN9 is the big square footprint with 4 pins. There is no connector mounted in your pictures. As you said, just get a JAMMA harness and power it with that since you will need to add some joysticks.

The original power to this JVS IO came through CN9. 5V and 12V. I suspect 5V is all you need. You can pinout the 5Vand 12V from the appropriate JAMMA connector and onto the other headers. This IO might also needs spoofing of the coin meter so that you will be allowed to insert coins. Insert a...

What @streetfighterken says is correct. The COM connector also needs to be the one between the PCI slots.

There seems to be some waiting for a given register status in the fpgald_wait function?

Older FPGAs always relied on uploading the bitstream to RAM in the FPGA device. Software would wait until the ready pin was asserted. My question is if the software checks if the ready pin is already asserted and if it is skips the upload ?

@Shin you can accomplish all of that today without changing anything on the HAS.

@RGB Thank you for the tip, I think I would prefer the HD15 directly since then It's only one cable with the nice VGA adapter + audio of course. Tell me is the CSync TTL without the 470R on HAS 5.0 ?

I am now the happy owner of a Retrotink 4K Pro. What is the best way to interface the HAS to this unit @RGB ? It has the following inputs: HD15/VGA: RGBHV, RGBS, RGsB SCART: RGBS, RGsB, YPbPr, S-Video, Composite. https://www.retrotink.com/shop/retrotink-4k

Thank you @twistedsymphony !

Ordered some bits from his online shop, items were sent in a flash, excellent packing, good communication, recommended for all!

Does anyone have a link to a complete walkthru on how to setup a NAOMI for CF booting ? I.e. firmware upgrade, jumpers, CF reader etc... ?

This site lists the various SEGA IOs, I would compare the connections to determine if it's a drop-in replacement. https://wiki.arcadeotaku.com/w/JVS