Gyruss for MiSTer
An FPGA implementation of Gyruss for the MiSTer platform
Credits
- Sorgelig - MiSTer project lead
- MiSTer-X - Original Gyruss core design (https://github.com/MrX-8B/MiSTer-Arcade-Gyruss)
- Ace - New Gyruss core design & Konami custom chip implementations
- ElectronAsh - Assistance with Konami custom chip implementations
- Artemio Urbina - Hardware references for video and audio output
- JimmyStones - High score saving support & pause feature
- Kitrinx - ROM loader
- ThePulseRifle - Playtesting
Features
- Timing-accurate logic model made to match the original as closely as possible
- Keyboard and joystick controls
- High score saving (To save your scores, use the 'Save Settings' option in the OSD)
- T80s CPU by Daniel Wallner with fixes by MikeJ, Sorgelig, and others
- Greg Miller's cycle-accurate MC6809E CPU core with modifications by Sorgelig and bugfixes by Arnim Laeuger and Jotego as the basis for the KONAMI-1 custom encrypted MC6809E
- JT49 sound core by Jotego with modifications to the volume scale by Ace
- T48 MCU by Arnim Laeuger configured as an i8039
- Fully-tuned switchable low-pass filters
- Option for normalized video timings to use with picky HDTVs and monitors (underclocks the game by ~1%)
Installation
Place *.rbf into the "_Arcade/cores" folder on your SD card. Then, place *.mra into the "_Arcade" folder and ROM files from MAME into "games/mame".
ATTENTION
ROMs are not included. In order to use this arcade core, you must provide the correct ROMs.
To simplify the process, .mra files are provided in the releases folder that specify the required ROMs along with their checksums. The ROM's .zip filename refers to the corresponding file in the M.A.M.E. project.
Please refer to https://github.com/MiSTer-devel/Main_MiSTer/wiki/Arcade-Roms for information on how to setup and use the environment.
Quick reference for folders and file placement:
/_Arcade/.mra /_Arcade/cores/.rbf /games/mame/.zip /games/hbmame/.zip
Controls
Keyboard
| Key | Function |
|---|---|
| 1 | 1-Player Start |
| 2 | 2-Player Start |
| 5, 6 | Coin |
| 9 | Service Credit |
| Arrow keys | Movement |
| CTRL | Shot |
Known Issues
- The volume scale for the AY-3-8910s requires further tuning for proper accuracy