Apple II FPGA Co-Processor

RISC-V implementation of RV32I for FPGA board Tang Nano 9K utilizing on-board burst PSRAM, flash and SD card

Вектор-06ц в ПЛИС / Vector-06c in FPGA

Atari 2600 VCS core for the Tang Nano 9k Nano 20K Primer 20k Primer 25K Mega 60k Mega 138K Pro Console60k/138k FPGA

USB PD cc pin monitor implemented in a Tang Nano 9K FPGA.

Commodore VIC20 core for the Tang Nano 9K FPGA with LCD Output

6502 SBC in a Gowin FPGA on a Sipeed Tang Nano 9k or 20k

experiments with simple CPU design

Zilog Z8 softcore in verilog

Commodore VIC-20 core for the Tang Nano 9k FPGA

UART interface to a block ram in the Tang Nano 9k FPGA. No pin connections needed, just use the USB UART.

HDMI for Tang Nano 9K

A small and cheap triggering system for side channel attacks using Gowin FPGA

This is a re-write of my previous trigger project. This time Tang Nano 9k is the target hardware and the USB UART is used to configure and enable triggering.

Collection of 4-bit ALU designs: from discrete, NAND/XOR/NOR-based ripple-carry circuits with multiple operation sets, to a high-performance carry-lookahead implementation, and a fully synthesized FPGA version on a Tang Nano 9K. Explores hardware minimalism, combinational logic, and the transition to programmable logic.

4-Bit Register File Designs. This repository features two designs: a minimalist RB1574B using 74HC157 multiplexers for selective reads, and a full RB1534B using 74HC153 multiplexers for complete read/write flexibility. Includes technical details, IC lists and wiring strategies.