FPGA-Console

A Simple Game Console built from the Ground Up, from its CPU design to game design using FPGA

• Using Tang Nano 9k FPGA, custom CPU is created
• ESP8266 and SSD1306 acts as a Screen controller. ESP8266 and SSD1306 communicate with I2C protocol
• Uses OSS-CAD tools
• CPU and screen controller talks with each other through UART.
• FPGA and flash memory communicates using SPI protocol
• FPGA and display module communicates using UART

Tools and Stuff

• FPGA used : Tang Nano 9k
• Screen : SSD1306
• Synthesis : Yosys,synth_gowin
• place and Route: nextpnr-gowin
• Bitstream generator: gowin_pack
• load: openFPGALoader
• Assembler: Written In Rust

CPU

You need OSS-CAD-SUITE

• load CPU into FPGA cd cpu; make all

• flash your game to FPGA openFPGALoader -b tangnano9k --external-flash ./cpu/games/pong.bin

• To verify specific module iverilog ./cpu/uart.v; vvp a.out; gtkwave new_created.vcd

Fig: FPGA in Action

Architecture of CPU

Fig: Architecture of CPU

---

Table: ISA Table

---

Timing Diagram for CPU

Schematic Diagram