Service Release + Victorious Nine
The JTFLSTORY core now covers one more game:
History
Baseball game released by Taito in 1984. The game uses the names of Japanese ...
2025-02-21 18:36:04 +0000 UTC View Post
JOTEGO posts
TYPHOON GAL/ONNA SANSHIRO - RUMBA LUMBER
I resumed work on the JTFLSTORY beta. There are a few more games that run on similar hardware. The new beta brings support to two more games.
TYPHOON GAL/ONNA SANSHIRO
2025-02-07 20:10:01 +0000 UTC
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Gradius 2: Gopher's Ambition
This week JTTWIN16 beta is expanded to support Gradius 2. This game was originally failing because the scroll settings that affect the sprite location were not applied at the expected time. That caused the game not to detect any collisions so the ship would just have a peaceful travel to the boss scene, and then stay there as...
2025-01-17 10:26:07 +0000 UTC View PostNinja Gaiden/Shadow Warriors
Happy New Year and welcome to the first release of 2025. We just had JTTWIN16 beta featuring Dark Adventure a few days ago so I am sure you did not see today's one coming!
Update your BETA.KEY file for this release
History
Developed by Tecmo, this belt-scrolling action game was fi...
2025-01-03 17:14:13 +0000 UTC View PostThe Game with Three Names
History
Devil World in Europe, 魔獣の王国 Maju no Okoku in Japan and Dark Adventure in North America, where the game system was significantly changed. This Konami's 1987 game was developed by Hiroyasu Machiguchi, who wor...
2024-12-31 13:51:19 +0000 UTC View PostService Release
A couple of small things that affect almost all JT cores in this week's release:
Better low pass filter implementation, with more precise cut-off frequency, attenuation and much less quantization noise. This is a side effect of the work I have been doing on implementing the equalizer for JTFLSTORY
The FairyLand Story
Saturday release this time, as there was a last minute hickup yesterday.
History
This fixed-screen action game was developed and released by Taito in 1985. Compared to "Chack'n Pop", a game with a simila...
2024-12-14 12:06:30 +0000 UTC View PostWorld Cup: Analog Controls and Audio Volume
Work on Tehkan World Cup electrical schematic diagrams is finished. It has brought up a number of new discoveries on this hardware:
correct video timing (including frame rate)
3kHz antialias audio filter for PCM
16-step volume control for PCM audio
priority control fo...
2024-11-29 12:17:12 +0000 UTC View Post
1985 World Cup
History
The most popular soccer game in the 80's arcades was released by Tehkan, the former name of Tecmo in 1985.
There were two types of cabinet of it: upright one which had a uniform shape when viewed from the side ...
2024-11-08 16:05:36 +0000 UTC View PostGFX Patches
Work on Konami-compatible hardware continues. Impacting several cores. See the post images for examples of fixed scenes.
Fixed missing button 3, missing OSD option for dip switches and shadow problems on X-MEN
- <... 2024-10-25 16:31:25 +0000 UTC View Post
JTXMEN Beta
We bring a new beta core, JTXMEN, compatible with KONAMI's X-MEN hardware. KONAMI's X-MEN is based on the 1989 US-aired PRYDE OF THE X-MEN cartoon, and the colourful costumes conform to those of the time. The appeal of this title was that players could choose from six main characters, with flashy explosion ef...
2024-10-11 19:24:12 +0000 UTC View PostService Release
Service release this week, with special attention to NGPC as more games work now:
Revisited shouse: flip not working which did not work well on Analogue Pocket.
Fixes on the NeoGeo Pocket color core have rend...
2024-10-04 14:33:28 +0000 UTC View Post
The Other Avengers
There have been developments related to CAPCOM's Avengers (1987). A copy of the Trojan schematics appeared in the internet a while ago. It included a sheet for an MCU (microcontroller unit) that was not used on Trojan. Looking more into it, this was for Avengers. Recently too, a dump of this MCU also appeared on the internet....
2024-09-21 16:12:21 +0000 UTC View PostThe other avengers
There have been developments related to CAPCOM's Avengers (1987). A copy of the Trojan schematics appeared on the internet a while ago. It included a sheet for an MCU (microcontroller unit) that was not used on Trojan. Looking more into it, this was for Avengers. Recently too, a dump of this MCU also app...
2024-09-20 13:54:27 +0000 UTC View PostRumbling Super Stars
Do you remember the thrill of stepping into the arcade as a kid, hearing the roar of the crowd and the iconic entrance music of your favorite WWF wrestlers? WWF Superstars, released by Technos Japan in 1989, was the game that brought all of that action to life.
It was the first WWF arcade game, and it h...
2024-09-06 19:52:07 +0000 UTC View PostCircus Charlie & NGP Color
Very busy three weeks working on many, many items. Some of them involved changes to many cores. 515 files have been edited in the source code since the last JTFRIDAY, so plenty of work. The main achievements are: 2024-08-30 17:32:34 +0000 UTC View Post
Development Update/Trick Trap beta (Pocket)
No big announcements for this summer week but plenty of items to report.
Legacy Cores for Analogue Pocket
Analogue Pocket cores JTSLYSPY and JTFLANE are promoted to public as not issues have been reported on them. JTLABRUN core, compatible with
Sunset Riders & Pocket Analogizer
Sunset Riders
Four gunmen looking for action under the hot sun. If you have not met Sunset Riders before, get ready to fall in love with its smooth animations, humour and saloon girls. We welcome a new core: JTRIDERS, compatible with Konami's Sunset Riders hardware. This core operates in all FPGA platforms (including ...
2024-07-27 09:25:03 +0000 UTC View PostMoonwalker, Fast Lane, public cores...
Moonwalker
The arcade game with arguably the most popular music ever visits us this week. JTS18 beta adds support for Michael Jackson's Moonwalker. This game has proven hard to support. First, there were problems to make it boot up because of some odd timing issue with MegaDrive's VDP chip. Then the music was severely...
2024-07-12 16:29:23 +0000 UTC View PostSupport for Rompers, Bakutotsu Kijutei and bug fixes
New Games
JTSHOUSE core (beta) gets support for the action puzzle game Rompers and the action shooting game Bakutotsu Kijutei this week. These were the final two games pending on this core.
Rompers released by Namco in 1989. The aim is for the main cha...
2024-06-28 16:30:42 +0000 UTC View PostSupport for Clutch Hitter, Hi Scores and more...
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Many topics for this JT Friday:
JTS18 core (beta) adds support for the baseball game Clutch Hitter
JTSLYSPY beta (compatible with Data East's Sly Spy, Boulder Dash 2) core for Analogue Pocket
JTSHOUSE core (beta...
2024-06-14 10:59:43 +0000 UTC View Post
Support for Alien Storm/Bionic Commando
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We have added the MegaDrive VDP chip to the JTS18 core. This chip is responsible of all the graphics and part of the audio in a MegaDrive console. On SEGA System 18 boards, it was only used for auxiliary video. Pretty much all you see in the screen is always coming from arcade-exclusive g...
2024-05-31 10:46:49 +0000 UTC View PostSystem 18, More JTSHOUSE Games
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Lots of items to cover this week:
Beta Key Change
After using the same beta key since January, we are refreshing it. The new one is attached. As usual:
MiSTer users, copy jtbeta.zip to games/mame
Pocket users, unzip jtbeta.zip to Assets/j...
2024-05-24 10:55:27 +0000 UTC View Post
CRT Usage
What type of screen do you use to play FPGA cores?
The information from these polls guides development effort.
2024-05-11 16:24:46 +0000 UTC View PostNetlists and Other News
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Several SEGA System 18 games are booting up in the upcoming JTS18 core but I found an unexpected hiccup in the connection of the MegaDrive VDP. This arcade system uses a combination of video chips in which the MegaDrive VDP also plays a role. We have two versions of this VDP available, wh...
2024-05-10 06:33:12 +0000 UTC View PostTanks and Sports
Very quick update this week for five new games supported on the JTSHOUSE core.
Tank games
Blazer, an isometric tank shooter that looks really good and has solid play
Tank Force, a funny game to play with friends. Only the two player version is available in ...
2024-04-26 09:56:38 +0000 UTC View Post
Shooters!
Public Releases
We are giving priority to finishing off the cores in beta phase. This week we promote two to public releases:
JTTMNT, supporting Teenage Mutant Ninja Turtles, MIA and PunkShot is finally ready for prime time 2024-04-19 08:35:16 +0000 UTC View Post
Support for Pac-Mania. JTCOMMND for Pocket
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Work continues toward closing the JTSHOUSE and JTTMNT betas. More GFX features have been implemented for JTSHOUSE, fixing problems in Splatter House and Galaga '88. We also bring support for Pac-Mania in this week's update.
Reports about music instruments going ...
2024-04-05 18:13:45 +0000 UTC View PostJTSHOUSE: Support for Galaga 88
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The sound conversion for JTSIMSON, JTTMNT, and JTALIENS, cores compatible with 16-bit Konami titles, is ready. With this update, the problem of FX being too faint is solved. The FX-music balance of Bubble Bobble took a bit more work. We found that the percussion instruments did not have t...
2024-03-29 16:02:00 +0000 UTC View Post
