7800 Developers will be pleased to hear I've added the ability to run A78 ROM's from a serial connection to the 7800GD cart.

Upload is at 500kbaud, so even large ROMs only take a few seconds.

Code will be released to allow people to integrate functionality into their own tools!

For anyone waiting on NeoPocketGD's in the US, @StoneAgeGamer will be restocking shortly! @StoneAgeGamer will be restocking shortly! https://t.co/269ay9Mi5S

Good news 7800GD people! After a few days of hammering I now have Kitrinx's k7800 MiSTer TIA core plumbed in. This will give 2600 RGB graphics compatibility inline with the MiSTer core.

And before anyone asks, yes, I have a closed source license agreement in place.

I don’t think I’ve posted any physical pictures of the 7800GD in its shell.

Still a little tweaking to do, but it’s nice to have a full physical product!

And the Mega7800 MegaDrive pad adapter prototype as well.

Just built up another 7800GD. This one is finally going out for some external testing shortly! Fingers crossed it all goes smoothly so I can get this thing in peoples hands sooner rather than later!

Today I have been tweaking the 7800GD video output to play nicely with the OSSC. The results are excellent!

Redesigned 7800GD cartridge shell with rear facing AV port. I'll actually print this one tomorrow and check for fit!

Customers having issues with the LynxGD on specific Lynx2 chipset revisions with BennVenn modded screen fitted now have a fix!

Simply press OPTION1 when prompted during boot then check for and apply the latest firmware update.

Many thanks to Matt who shipped his Lynx to me!

The 7800GD is now rear entry compliant for AV connection!

Woo! Rikki and Vikki bupchip audio is playing again!

Phew, that has been a Herculean effort, but I now have the firmware update procedure working for the 7800GD. It will be essentially identical to my other devices with QR code / link to visit to download firmware updates. Getting very close to the testing phase…

I have been able to source parts for the NeoPocketGD and JaguarGD, more will be available in around 6-8 weeks from the usual retailers!

2600 mode TIA RGB output on the 7800GD is getting there. Playfield and player graphics are working pretty well. Missile and ball next…

Support for RGB out when running 2600 games on the 7800GD has begun!

May as well get this working while waiting for the new PCB’s to arrive…

This is a pretty final version of the 7800GD shell. The debug port is visible on the right side (as inserted in the console), with AV port on the left. The label recess has also been added, it won't wrap to the top due to the memory card slot being there, however.

First pass at a case for the 7800GD, some finer detail and punch-through missing for clips, but the shell is pretty much there. You can tell things are getting closer when you're looking at case designs...

I now have full stereo audio support on the MegaDrive2 style RGB video connector! This includes TIA audio, POKEY and YM2151. All audio is generated on the 7800GD, so no issues with volume levels between sound chips — all mixing will be user configurable.

Another end of day photo! RGB out is working remarkably well! Still some glitches, but extremely encouraging progress.

And all of this just from a cartridge… crazy, huh?

And to finish the day off, here’s the first bring up of the 7800GD RGB out! It’s very broken, but it’s a start!

Start of save state support and full 6 button pad support with 7800GD!

MegaDrive 6 button pad reading working nicely on the 7800 with the Mega7800 adapter. The code is pretty compact reading both ports at once, so two Mega7800 adapters can be read together.

I will be making good use of this in the 7800GD and can be used in homebrew also.

Finally grabbed a couple of hours to put the Mega7800 together, and I’m pleased that it’s working perfectly!

This is MegaDrive (wired plus wireless) pad support for the 7800. Next I will be adding 6 button support for 7800GD (and potential homebrew) support.

A quick side project, the Mega7800! It's a MegaDrive pad to 7800 converter which has button remapping, 6 button support and allows the 7800 to read all buttons. That's the plan, anyway!

The main reason for this is so I can hit START to get to the in-game 7800GD menu.

The next batch of Jaguar GameDrive carts have shipped to retailers today. I would expect restocking sometime next week.
As I have mentioned before, this is likely to be the last batch of these carts until around December due to the ongoing component shortage.

More 7800GD progress being made! 2600 mode is back up and running again.

Now onto more testing, tidying and bug fixing.

Finally! That was a pretty huge effort, but the 7800GD is running with the embedded RISCV CPU doing everything. Only the basic direct ROM mapper running, but it will now be quick to get the rest working again!

The next thing to play with has arrived… #NeoGeoPocket #RETROGAMING #RETROGAMING#NeoGeoPocket #RETROGAMING https://t.co/94vZoceS1l

For those who have been playing with the Efinix chips, I've written a standalone FT2232H SPI programming tool which works with the pinout the Efinix tools use.

This tool importantly leaves SS_N and CRESET_N tristated on exit!

First stab at a new NeoGeo Pocket GD using parts I can actually get hold of this decade!

Most importantly, what to call it? NeoPocket GD Ultra, R2, G2, PRO, X... any thoughts?

I've tidied up the source code for the JagGD command line tool and have released to GitHub. Most useful for those wanting to port to other machines, but may also be handy to include functionality to talk to the JagGD from your own tools.

Omg! New injection moulded shell prototypes for JagGD have arrived! They are absolutely beautiful and perfect. Very very happy!

Now to order a proper production quantity and get this next batch of carts out.

@aerobatic Argonaut's Starglider II running the the Atari Jaguar via a @TheRetroHQ JaguarGD drive!

Would you be interested in allowing an official release of this port? Please DM me if so! :)

@TheRetroHQ JaguarGD drive!

Would you be interested in allowing@aerobatic Argonaut's Starglider II running the the Atari Jaguar via a @TheRetroHQ JaguarGD drive!

Would you be interested in allowing an official release of this port? Please DM me if so! :)

https://t.co/CuXnzGTqL6

We are currently working on a new game called Dracula for ColecoVision. There's about 20 rooms already done and we're planning to have around 50 different ones in total.
Dracula is going to be the most ambitious ColecoVision game ever made, without using ANY special hardware.

This is the most fun I've had playing with Verilog by miles. A working RISCV core with debugging support being simulated with Verilog and interactively probed with GDB via OpenOCD. With some screenshots for proof!

A mix of the awesome work of @ultraembedded and @wren6991. @wren6991@ultraembedded and @wren6991. https://t.co/0DB2rNUnuc

Finally!! A new batch of LynxGD PBS’s has arrived!

Arrived today, AliExpress did well here! Another awesome project lined up…

Atari 2600 games are now also running on the 7800GD. So far just unbanked 2K and 4K ROMs, but the rest will come quickly now the framework is in place.

My new review is live, compliments of @TheRetroHQ for providing the NeoPocket GameDrive for review. It's the most in depth review I've done in 2022 so far! I had a blast with it. @TheRetroHQ for providing the NeoPocket GameDrive for review. It's the most in depth review I've done in 2022 so far! I had a blast with it. https://t.co/eS3vO9j9eZ

BupChip audio is now fully functional on the 7800GD, so Rikki and Vikki now has it's lovely soundtrack! I will also be aiding @Kitrinx to get the same support added into the 7800 core in MiSTer. Many thanks to @tailchao for his help in getting this all working! @tailchao@Kitrinx to get the same support added into the 7800 core in MiSTer. Many thanks to @tailchao for his help in getting this all working! https://t.co/a3leYkWq3z

That went quicker than expected! Games starting to work (with POKEY!) on the new Trion based 7800GD board. The Efinix dev tools are a bit clunky and rough around the edges, but everything needed is there.