inmbolmie

5250_usb_converter. Converter to plug an IBM 5251 terminal to a Linux PC via USB emulating a VT52 terminal

T4_EGA_VGA. Teensy 4.0 based CGA/EGA to VGA converter

Save-a-Term. Hardware for a PS/2 to 5251 and 3278 reverse keyboard adapter based on a TMK controller fork

FloppyRider. Full-featured DIY PC-compatible 8-inch Diskette drive based on the IBM 51TD.

ps2_to_4704_converter. Fork of the tmk keyboard firmware collection with an added PS2 to IBM 4704 and IBMPC to 5251/3278 converters

elfacun. Hardware project to create a chess module compatible with the old Mephisto modular boards (Exclusive, Modular, München) that will provide connectivity to a wide variety of chess apps and services

Memotron. Retro-inspired DIY 256KB memory expansion for the Amstrad CPC 464 computers

ibm_pc_overclock_board. Schematics for an IBM 5150/5160 overclock board

ScreechyCat. PC Speaker sound card over the serial port

chessmate. Custom adapters designed to replace the P2111 SRAM and MOS 6530-024 RRIOT vintage chips used in the Commodore Chessmate chess computer.

FloppyBird. Disk interface to adapt an PC floppy drive to an IBM 31SD/51TD controller

OpenMephisto. C