: RetroHQ :

May 16th 2022, 16:07:18

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!

: RetroHQ :

May 10th 2022, 16:26:37

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?

: RetroHQ :

May 4th 2022, 14:58:46

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.

: RetroHQ :

May 4th 2022, 09:07:41

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. 👌

Lawrence Staveley

May 4th 2022, 07:37:42

@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

CollectorVision Games

April 13th 2022, 19:09:14

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.

: RetroHQ :

April 1st 2022, 16:30:27

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

: RetroHQ :

March 25th 2022, 15:12:35

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

: RetroHQ :

March 7th 2022, 17:38:57

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

: RetroHQ :

February 24th 2022, 17:35:39

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.

VIRACY

February 20th 2022, 22:01:19

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
Hardware Review: NeoPocket GameDrive for NGPC! via @V1RACY @V1RACY https://t.co/vr63miAqL9

: RetroHQ :

February 16th 2022, 15:04:37

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

: RetroHQ :

January 26th 2022, 14:34:05

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.

: RetroHQ :

January 25th 2022, 09:51:13

Now that's very good to hear!
When you own a product, you should be able to repair it yourself. That’s why I included support for the “right to repair” in my Executive Order.

Now, companies like Apple and Microsoft are changing their policies so folks will be able to repair their devices themselves.

: RetroHQ :

January 24th 2022, 17:31:33

The latest Trion powered 7800GD variant! It doesn't work yet, so this is a monumentally dull post, but now I have a jumping off point to start playing around with it.

The FPGA is configuring and the microcontroller is awake, so things are happening! It just doesn't work. 😆

Steve Benway

January 21st 2022, 14:25:16

New Video: Highlander on the Jaguar CD (Using Jaguar Game Drive)

: RetroHQ :

January 10th 2022, 08:12:55

@krikzz I don’t do that any more… maybe I should! 😄 I used to have one of these as a kid and loved making projects. Sadly neither of my two girls are interested in electronics. Maybe one day… 🤔
@krikzz I don’t do that any more… maybe I should! 😄 I used to have one of these as a kid and loved making projects. Sadly neither of my two girls are interested in electronics. Maybe one day… 🤔 https://t.co/s6qOEQAgqx

: RetroHQ :

January 9th 2022, 18:49:00

This is totally cool. Building your own computer from off the shelf chips is one thing, but building your own IC’s is a whole new level of genius insanity! Much respect. 👌
I designed a new IC, it doesn't work yet but getting close! It adds two 1-bit numbers together and uses compact layout rules that are a big step towards making a full CPU. Also figured out how to do multiple metal layers, only 1 here tho

interim pics & info on Patreon soon (thx)

: RetroHQ :

December 24th 2021, 11:27:42

I've now moved the 7800GD design over to using a Trion FPGA and have just ordered a prototype PCB. Definitely time to take a week off while that wings its way to me! 😄

: RetroHQ :

December 14th 2021, 08:17:02

I still can’t fathom how an image like this gets turned into logic. It really is the best kind of witchcraft! Absolutely amazing work and it just keeps coming. 😮
*takes a deep breath*
Here we go for the 051937, the last video chip I need to trace for TMNT.

: RetroHQ :

December 10th 2021, 22:34:37

Wow, cool, I’d never thought of using a metal brush for a quick larger area continuity check. That’s genius!
this is how I'm reverse engineering it. pick a pin, then use the brush to figure out what it is wired to.

: RetroHQ :

December 7th 2021, 16:43:10

7800GD feature reveal! I now have the ability to break into and return to running games. This will lead on to things like save states and game genie style cheats.

: RetroHQ :

December 3rd 2021, 17:01:41

That's now all the original commercial games running on the 7800GD on NTSC, including built-in POKEY support! I am aiming for dual POKEY and YM2151 support for final release.

: RetroHQ :

November 30th 2021, 16:41:53

7800 GameDrive direct mapped, SuperGame banked and Activision banked games now supported and working. A few crashing, but largely working now. A few more mappers to get through then onto POKEY.

Humble Bazooka

November 30th 2021, 01:00:29

JagAIOA Plus now in stock in very limited quantities. RGB, S-Video, Composite, and Networking for your Jaguar. This is was an unplanned adapter I've built for a people who wanted all the signals from the AIOA with JagNet support.

FPGAzumSpass

November 28th 2021, 14:41:18

BIOS is now fully booting into games on #MiSTerFPGA PlayStation core with the latest fix. No more forced fastboot. This also fixes some games, e.g. Glover is now playable.
#MiSTerFPGA PlayStation core with the latest fix. No more forced fastboot. This also fixes some games, e.g. Glover is now playable. https://t.co/OMAhwOndyj

: RetroHQ :

November 26th 2021, 17:24:22

7800 GameDrive coming on nicely! Basic mappers and game selection working. Moving onto banked mappers. 👌

: RetroHQ :

November 16th 2021, 17:23:37

The 7800 is starting to do things... 😄

: RetroHQ :

November 11th 2021, 14:23:14

The 7800GD lives! Step one, make screen yellow. Step two, run all games. Nearly there! 😆

: RetroHQ :

November 11th 2021, 11:06:28

I was having issues getting a stable clock from Maria as it's so noisy it actually glitches the main clock. This is evident on some Maria chips with a wavy image. I'm now driving the main system clock into Maria (nice bodge below!) and am getting a stable image on 3 chips! 1/2

: RetroHQ :

October 25th 2021, 20:35:40

Finally something approaching stable. Different Maria chips in different states (cold / warm) give slightly different results, so more tweaking required, but a big improvement! Nearly there..,

: RetroHQ :

October 19th 2021, 19:22:18

Amazing how small an ARM1 was in terms of transistors, due to its RISC architecture. The 68000 being 68k transistors by comparison. I like the CISC instruction set so much more, though, it’s like someone took C operators and made them mnemonics. Which is, I guess, what happened!
how it started: how it’s going:

: RetroHQ :

October 19th 2021, 19:04:59

Is it me, or does Google’s new phone just look like a C64 GS?

: RetroHQ :

October 18th 2021, 08:10:09

It's quite an honor to see my products among those of @krikzz and @terraonion. Certainly not something I thought would be a thing a few years ago. 😄 @terraonion. Certainly not something I thought would be a thing a few years ago. 😄 @krikzz and @terraonion. Certainly not something I thought would be a thing a few years ago. 😄 https://t.co/4CYoKWTeOt
Today I'm talking about my EVERDRIVE & Flash Cart Collection (SNES, N64, SegaCD, Game Boy, NEOGEO, Genesis, etc) - WATCH >> https://t.co/NonzJ865Jz - What Everdrive / Flash carts do you use in your game room?
youtu.be/TmIQe3kqG8w - What Everdrive / Flash carts do you use in your game room? https://t.co/GOOCZX2nOY

: RetroHQ :

October 16th 2021, 16:04:45

Wow, that’s insane! Congratulations all involved. 😄
Selling 3000 copies of a new #C64 game in these days is unprecedented. But when you have a game as great as Sam's Journey then the impossible can happen! If you have yet to experience one of the greatest games on the C64 then head over to https://t.co/0FJw8bGaX1
#C64 game in these days is unprecedented. But when you have a game as great as Sam's Journey then the impossible can happen! If you have yet to experience one of the greatest games on the C64 then head over to https://t.co/0FJw8bGaX1 https://t.co/Gir80IiB8e

: RetroHQ :

October 16th 2021, 13:56:11

(In my best Australian accent)
Can you guess what it is yet?

: RetroHQ :

October 6th 2021, 10:06:02

Finally getting *somewhere* with the 7800RGB. The video output from Maria is so jittery I've actually given up trying to use it and have instead done Maria's job for her and assembled each scanline from the display lists being read in!

: RetroHQ :

October 2nd 2021, 14:14:13

That is nice! The CPC can do some really nice graphics if the palette is used to its best.
This game looks beautiful on the CPC

: RetroHQ :

September 30th 2021, 12:40:21

For coders out there, the first commit of the Jaguar GameDrive homebrew API is available.



This allows you to use functionality of the GD cart in your own code. Firmware compatible with it will be out next week, just going through final testing. 😄

: RetroHQ :

September 26th 2021, 07:24:49

Very nice! Soon people will be able to easily and freely use the Jag GD functionality in their own code. 😄
RAPTOR GD Functions coming along nicely :)

Some stuff for both myself and @TheRetroHQ still to work through, but looking good so far!

Nice work, SainT 🙂
@TheRetroHQ still to work through, but looking good so far!

Nice work, SainT 🙂 https://t.co/LRWtJHwOCn

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