
RC1802 CPU
tebl/RC1802-Cosmac-ELF
With the RC6502-project for making an Apple 1 replica done I wanted to do something different, so I started designing a simple version of the RCA 1802-based Cosmac ELF instead.
KiCad boards from 113 GitHub repositories tagged “retrocomputing”, the most starred first; open any of them in PCBKit.

tebl/RC1802-Cosmac-ELF
With the RC6502-project for making an Apple 1 replica done I wanted to do something different, so I started designing a simple version of the RCA 1802-based Cosmac ELF instead.

SukkoPera/OpenAmigaDriveSwitcher
Open Hardware Floppy Drive Swapper for Amiga Computers

SukkoPera/OpenC64KernalCart
Open Hardware Multi-KERNAL Cartridge for the Commodore 64

demik/oldworld
Development ressources for Old World Macintosh (68k and NuBus PPC) and a few related things…

SukkoPera/OpenAmiga2000CoproAdapter
Move your Amiga 2000 CPU to the Coprocessor slot!

SukkoPera/OpenAmigaMouseTrigger
Control Amiga add-on boards through mouse buttons


hkzlab/ISA_EGA_CHIPS
This board is and EGA clone based on a reversed PA-WTEGA card, based on the chipset by CHIPS (P82C435 + P82A436).

tebl/Apple2-Prototyping-Card
Prototyping card for developing new hardware for legacy Apple ][, //e and //gs computers.


demik/MacSnap-SCSI
SCSI interface by Dove Computer Corporation for Macintosh 512Ke


hkzlab/DWAVE_MIDI_Wavetable
DWAVE is a small General MIDI module for the wavetable connector of your old sound card, based on the SAM2695 chip

hkzlab/TTL-to-RGB
This board converts CGA/EGA/MDA/Hercules TTL signals into analog RGB signals that can be fed into a compatible monitor


nealcrook/nascom
Software, utilities and documentation for the Z80-based NASCOM2 computer


SukkoPera/OldPromAdapter
Replace 82s126/82s129/82s131 PROMs with (E)EPROMs

SukkoPera/OpenC16RamExpansion
Open Hardware 64 Kb RAM Expansion for the Commodore 16

ytmytm/1551-rePico
Commodore 1551 disk-drive replacement for Plus/4, C16 and C116: Pico2 + 6510T + CPLD in a Pi1551-III case, host via tcbm2sd. Firmware/GCR derived from 1541-rePico.

hkzlab/A500_r5-eprom_adapter
Amiga 500 rev.5 EPROM adapter for 27C020, 27C040 and 27C080

hkzlab/TurboXT_Addon
8Mhz Turbo / Reset addon board for the IBM 5160 (The original XT)

leaded-solder/x68000-pro-picopsu
Adapter to use PicoPSU power supplies in a Sharp X68000 PRO computer
