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Work on the NeoGeo Pocket core continues. The system is very complex for a small handheld, mainly due to the Toshiba MCU that powers it. The MCU is comprised of the processor, the TLCS900h and many peripher...
2023-05-26 16:37:39 +0000 UTC View PostFor MiSTer and Pocket FPGA users, how many of you use an automatic updater to install cores in your devices?
2023-05-16 04:27:54 +0000 UTC View Post
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The Konami CPU seems to have at least two different flavours, named 052001 and 052256 on original schematics. The first one, older and present in Haunted Castle, seems more like a cut-down version of the Motorola 6...
2023-05-12 13:43:44 +0000 UTC View PostEspañol abajo 日本語は以下
Beta calendar
Maintenance updates this week
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As planned, we have a new game for the JTKIWI core this week, the great Arkanoid sequel. I find this game much more fun than the first while keeping with its spirit. Skutis worked on the schematics for this board. It is very similar to the ...
2023-04-28 11:39:28 +0000 UTC View Post
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Beta files
Find the beta files through update_all if you use MiSTer or directly in JTBIN. For the other platforms, used the files attached. MiSTer users need the jtbeta.zip, which has not changed. We have an addition...
2023-04-14 13:24:54 +0000 UTC View Post
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Konami CPU
We are testing the CPU now and we are honestly shocked at how well it is going. If you were here last Autumn you would remember that we were working on the NGP CPU and that progress was slow. Eventually, th...
2023-03-31 18:15:51 +0000 UTC View Post
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After much work, we finally have the line-based frame buffers working on both the MiSTer and the Pocket. As I explained before, most arcade games draw the sprites as the image lines are scanned. This gives about 64 microseconds to parse and...
2023-03-24 17:42:12 +0000 UTC View Post(Español abajo, 日本語は以下)
The last time we talked about Out Run, we had the game running on several platforms with the FPGA clocked at 96MHz and some graphic glitches, especially in the sprites. The 96MHz version wasn’t stable on MiSTer and it didn’t work for...
2023-03-11 20:48:20 +0000 UTC View PostEspañol abajo 日本語は以下
A lot of people demand support for odd controllers, like the rotary joystick with a top button used on Forgotten Worlds. Yet, I was surprised when I was asked to support a ride. Yes, you can now play Magical Pumpkin, a ride videoga...
2023-03-03 12:39:31 +0000 UTC View Post
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The New Zealand Story, released by Taito in 1988.
The story follows the lovable protagonist, the flightless bird "Kiwi", as he uses various vehicles and equipment to rescue his friends.
Initially, there were no plans to develop ...
2023-02-24 20:46:16 +0000 UTC View Post
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As you know, I have been working on improving the work flow to prevent problems when updating cores and ease maintenance. I finished unifying the source code for all cores in a single location this week. The 59 JT cores supporting over 900 ...
2023-02-17 18:55:33 +0000 UTC View Post
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The Motorola M6809 CPU powered many arcade games (and some home computers). It was used by CAPCOM in Ghosts’n Goblins and by Konami in Kicker, Track’n Field, etc. The CPU had complex memory addressing instructions that made development easy and was favo...
2023-02-10 20:19:44 +0000 UTC View Post
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JTKARNOV core (supporting Karnov, Chelnov and Wonder Planet) goes public today for all systems. The files are available at the JTBIN repository and au...
2023-02-03 11:20:21 +0000 UTC View PostEspañol abajo 日本語は以下
We added spinner support to the JTCOP and JTMIDRES cores (Heavy Barrel and Midnight Resistance). That leaves only two spinner games left to do: Block Block (JTPAN...
2023-01-27 19:43:18 +0000 UTC View Post
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We arrive to the final delivery of the JTKARNOV core with support for Wonder Planet. Gradius (Nemesis) was a dark-themed game and spurred a number of colorful shooters in reaction: Fantasy Zone, Parodius and Data East’s Wonder P...
2023-01-20 19:12:12 +0000 UTC View Post
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Tutorials, updaters, etc
For newcomers, please check the welcome e-mail from Patreon, the core README files and the other text files in the Pocket zip. There are links to text and video tutorials as ... 2023-01-13 19:21:00 +0000 UTC View Post
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Reaching out to open source developers about a 14-year old project usually ends in a disengaged response. So I contacted Arnim Läuger about his T48 project with skepticism. Intel produced the MCS-48 line of micro controllers until very rec...
2023-01-06 18:04:04 +0000 UTC View PostEspañol abajo 日本語は以下
Robocop opened 2022 as the first 16-bit Data East arcade on the MiSTer. It was a year ago and the System16 core received its last title, Bay Route, while Data East series kept conquering us with Fig...
2022-12-30 22:33:54 +0000 UTC View Post
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We visit this week a hardware from Data East that preceds Robocop and Dragon Ninja. The board is similar to those games in the main CPU, the sound subsystem and some of the glue logic but the graphics subsystem is more p...
2022-12-23 19:28:29 +0000 UTC View PostWhich one is the golden arcade era for you?
2022-12-22 10:07:02 +0000 UTC View Post
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We bring support to one more arcade title this week: Kageki. This game operates on hardware very similar to Insector X except for the sound. The PCB features a PCM driver to play voices and sound effects. The English and Japanese versions h...
2022-12-16 20:10:56 +0000 UTC View Post
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JTKIWI is this week’s beta core. It is compatible with the game Insector X. Find files attached for all systems. MiSTer users can also use update_all. Pocket users are reminded to generate the .rom files following this 2022-12-09 14:41:14 +0000 UTC View Post
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A lot of activity this week as usual, let me go quickly through it
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The core development this week has been focused on fixing the Out Run stability problem in MiSTer. This requires the addition of a new module, a sprite frame buffer. This design is closer to the original one and with it, the FPGA clock ca...
2022-11-25 17:59:56 +0000 UTC View Post
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Note: some Out Run versions may spent 30 seconds on a black screen before booting up. But they eventually boot up.
MiSTer files are in JTBIN
2022-11-18 17:54:49 +0000 UTC
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FILES FOR MIST(ER) & SIDI ARE IN JTBIN
POCKET FILES ATTACHED
I am proud to announce the first Out Run beta. This system is a bit more complex than the usual despite supporting only two games (Out Run and Turbo O...
2022-11-04 20:48:18 +0000 UTC View PostPlease mark all the FPGA devices that you own from the following list.
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Por favor marca todos los dispositivos FPGA que tengas de la lista.
2022-11-01 16:44:44 +0000 UTC View PostThings have not been going as planned lately. First, the electrical installation in the office needed major works and we have been having an electrician breaking the walls to pass cables through and causing all sorts of havoc. This has been quite a distraction.
Secondly, ramping up our new ...
2022-10-28 18:10:40 +0000 UTC View PostI had planned to have Out Run for today but those super scalers sprites are asking for a bit more love. We’ll go on a honeymoon over the weekend.
Work didn’t stop in other fronts. We spent two days improving the open source tool for simulation coverage that we are using for the NeoGeo P...
2022-10-14 19:10:07 +0000 UTC View Post