VGA Clock
simple project to show the time on a 640x480 VGA display.
Simulation instructions
Ensure that you have libsdl2-dev and verilator installed.
sudo apt-get install libsdl2-dev libsdl2-image-dev verilator
To run the simulation use the following commands:
cd rtl
make verilator && ./obj_dir/Vvga_clock
Use the h, m and s keys to increment the hour, minute and second counters respectively.
FPGA Build instructions
It's setup to run on 1 Bit Squared icebreaker with my VGA pmod plugged into pmod1a.
type
make prog
to build & upload to the icebreaker
FPGA utilisation
using logLUTs to record resource usage and max frequency over commits:
ASIC utilisation
https://www.zerotoasiccourse.com/post/vga_clock/
using the Skywater/Google 130nm process and OpenLane
- copy contents of rtl directory to designs/vga_clock/src/
- remove digit_tb.v and top_tb.v from designs/vga_clock/src/ (I am working on separating test and rtl)
- copy asic/config.tcl to designs/vga_clock/
- inside the docker environment:
- run ./flow.tcl -init_design_config -design vgaclock
- run ./flow.tcl -design vga_clock
This results in a routed design that uses 180x180 microns.
See asic/Makefile for some rules that start the docker and show the finished GDS in magic or klayout.
License
This software and hardware is licensed under the Apache License version 2