Awesome
MiSTery - An Atari ST/STe core for FPGAs
Features:
- Cycle accurate STe GLUE+MMU combo (re-created from the original schematics)
- Cycle accurate FX68K CPU core
- Cycle accurate Blitter offered by Jorge Cwik
- Mostly cycle accurate shifter based on schematics made from reverse engineering
- MegaSTe 16 MHz CPU mode
- Turbo bus - double RAM access speed
- RAM size up to 14MB
- Support for all TOS versions
- 2 Floppy disc drives
- ACSI hard disc support
- Viking compatible hi-res monochrome card support
- Real IKBD with HD63701 MCU
- Real MIDI input/output using MiST's UART pins
- Serial/parallel port redirect to USB
- Internal Cubase dongle
- Gauntlet type 4 joystick interface support
- STe controller port support
- RP5C15 RTC Chip
- Ethernet interface in cartridge port (Ethernec) support
- USB-RTC support
- Optional scandoubled/YPbPr video output
- Currently it runs on the MiST board, but the code is modular, so it's possible to add other boards
Usage for MiST:
Put the core.rbf and the TOS as tos.img to the SD-Card. TOS/hard disc/floppy images are selectable in the OSD (F12). With F11, you can toggle between normal and STe joystick ports.
Current issues/limitations:
- No RAM cache for Mega STe (but the cache control selects turbo bus speed)
- Only fake LMC1992
- PAL clock only (32.084 MHz)
- Since Jagpads have 21 buttons, not all are mapped to MiST controllers when using STe game ports
- No STe paddle handling (but it has 0 software support)
Thanks to:
- Till Harbaum for the MiST board, original MiST core, new IKBD code
- Jorge Cwik for the FX68K CPU core, FX ST Blitter code and shifter decap
- Christian Zietz for recovering the schematics of the GSTMCU