There are 2 repositories under mergefork topic.
DDR3 Controller, 16 read, 16 write ports, configurable widths, priority, auto-burst size & smart cache for each port. Fully documented source code. TestBenches included. [This fork is only a mirror, not for development]
BBC micro - Demistified for Deca & Neptuno. [This fork is only a mirror, not for development]
Dual 32 MB SDRAM + 2 MB SRAM MiSTer module with 3 extra pins for DECA retro cape 2
MiSTer SoCkit version. Common framework for MiST(er), SiDi, ZX-UNO/DOS and Unamiga core development. With special focus on arcade cores.
Memtest core for SoCkit board to test SDRAM MiSTer modules with GPIO addon
Uses the SDRAM controller from TurboGrafx16 to give an SDRAM chip a heavy workout. Check SoCkit folder for MiSTer port.
Acorn Archimedes core DeMiSTified, ported to TC64 and de10lite
c64 demistified core. Audio I2S on i2s branch
Flappy Bird core for MiSTer, MiST, DeMiSTify, Xilinx, GoWin, ...
Q*Bert core for MiSTer for the Terasic/Arrow SoCKit
Sega System 1 for Terasic SoCKit FPGA board running MiSTer
SoCkit(MiSTer) arcade core for Tecmo arcade classics: Rygar (1986), Gemini Wing (1987), and Silkworm (1988).
Absolute beginner's guide to the de10-nano [so it should apply to SoCKit as well]
Checks the sanity of the SDRAM module on MiST and MiSTer systems
TurboGrafx-16 CD / PC Engine CD for SoCkit (MiSTer)