4-bits wonder to print "Hello World!" and to calculate Fibonacci numbers to 13 decimal digits!

256 switches and few shift registers to implement a working 16 or 32-bit integer arithmetic calculator (+, -, *, /, isqrt, BCD / bin conv..)

Now your FPGA-based retro computer can have its own mass storage too - just like it did circa 1980!

A 16-bit CPU, with 16 registers, described in 66 lines of code - with HDL, emulators and a macro assembler.

A one-page CPU: spec, HDL, emulator and macro assembler each in one page. Fits in XC9572 CPLD.

Porting the classic Doom engine to an FPGA-based system

A custom 32-bit CPU core with GCC toolchain

SpinalHDL is an alternative hardware description language designed to provide many features that are missing in VHDL and in Verilog.

The CAT Board is part of a Raspberry Pi-based hand-held FPGA programming system.

An open platform for recording, routing, and manipulating HDMI and DisplayPort video signals.