JOTEGO posts
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Service Release + Victorious Nine
The JTFLSTORY core now covers one more game:HistoryBaseball game released by Taito in 1984. The game uses the names of Japanese professional baseball teams of the time. Players who were active on their respective teams at the time also appear but with slightly different names. The batter and pitcher zoom screen was qui...
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 SANSHIROReleased by Taito in 1985, this action game tells the story of a female fighter: Yuki, a dojo breaker. Dojo breaker means going to halls used for martial ...
JTTWIN16: Cue Brick Support
HistoryPuzzle game released by Konami in 1989. The stage is cleared by moving the blocks on the board and connecting the rails so that your ship can pass through all the rails. (Don't worry, the rails disappear once you pass through them.There were 100 stages in total, but the game board was equipped with the arcad...
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 t...
Ninja 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 releaseHistoryDeveloped by Tecmo, this belt-scrolling action game was first released in North America and Euro...
The Game with Three Names
HistoryDevil Worldin Europe, 魔獣の王国 Maju no Okokuin Japan and Dark Adventurein North America, where the game system was significantly changed. This Konami's 1987 game was developed by Hiroyasu Machiguchi, who worked on "Gradius" and "Life Force", together with other members of his team.The...
Service 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 JTFLSTORYSupport for screen ...
The FairyLand Story
Saturday release this time, as there was a last minute hickup yesterday.HistoryThis fixed-screen action game was developed and released by Taito in 1985. Compared to "Chack'n Pop", a game with a similar system released by the same company the previous year, the number of items and enemy types increased sign...
World 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 PCM16-step volume control for PCM audiopriority control for character and sprite layersComparing to last week'...
1985 World Cup
HistoryThe 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 and table one which had a step or gap between the control panel and the table. Many people were inju...
GFX 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 problemson X-MENFixed title logo did not display correctlyon Sunset RidersFixed some images missingon The SimpsonsFixed several,p...
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 effe...
Service Release
Service release this week, with special attention to NGPC as more games work now:Revisited shouse: flip not workingwhich did not work well on Analogue Pocket.Fixes on the NeoGeo Pocket color core have rendered many more games playable. This was tracked on the following GitHub issues: ngpc: fatal fury F-Contact (M2) wai...
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 th...
The 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 appeared on the...
Rumbling 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 had everything: re...
Circus 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 codesince the last JTFRIDAY, so plenty of work. The main achievements are:A new classic game core: JTCIRCUS for Circus Charlie.Circus Charlie is an action game published in by Konami ...
Development Update/Trick Trap beta (Pocket)
No big announcements for this summer week but plenty of items to report.Legacy Cores for Analogue PocketAnalogue Pocket cores JTSLYSPY and JTFLANEare promoted to publicas not issues have been reported on them. JTLABRUNcore, compatible with Trick Trap/Labyrinth Runner, enters betaphase.MaintenanceAdded support for scree...
Sunset Riders & Pocket Analogizer
Sunset RidersFour 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 (includin...
Moonwalker, Fast Lane, public cores...
MoonwalkerThe 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 se...
Support for Rompers, Bakutotsu Kijutei and bug fixes
New GamesJTSHOUSE core (beta) gets support for the action puzzle game Rompersand the action shooting game Bakutotsu Kijutei this week. These were the final two games pending on this core.Rompersreleased by Namco in 1989. The aim is for the main character, Chap, to get into a demon-controlled labyrinth to save his girlf...
Support for Clutch Hitter, Hi Scores and more...
Español abajoMany topics for this JT Friday:JTS18 core (beta) adds support for the baseball game Clutch HitterJTSLYSPY beta (compatible with Data East's Sly Spy, Boulder Dash 2) core for Analogue PocketJTSHOUSE core (beta) adds support for the 4-player version of Tank Force 626JTCPS1 core adds support for the SF2 ...
Support for Alien Storm/Bionic Commando
Español abajoWe 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 graphics chips but...
System 18, More JTSHOUSE Games
Español abajoLots of items to cover this week:Beta Key ChangeAfter 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/mamePocket users, unzip jtbeta.zip to Assets/jtpatreon/commonor folow the instructions of your Pocket updaterJTS18 cor...
CRT Usage
What type of screen do you use to play FPGA cores?The information from these polls guides development effort.
Netlists and Other News
Español abajoSeveral 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, which you may have ...
Tanks and Sports
Very quick update this week for five new games supported on the JTSHOUSE core.Tank gamesBlazer, an isometric tank shooter that looks really good and has solid playTank Force, a funny game to play with friends. Only the two player version is available in today's updateSports gamesThree games with a clear Japanese ac...
Shooters!
Public ReleasesWe 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 after implementing ROM checksJTMX5K (Pocket), supporting MX5000 as no issues have been reported af...
Support for Pac-Mania. JTCOMMND for Pocket
Español abajoWork 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 crazy in Splatter House led to detail...
JTSHOUSE: Support for Galaga 88
Español abajoThe 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 the right volume i...
