This is a personal project building an early 8-bit gaming console using the book Designing Video Game Hardware in Verilog by Steven Hugg, 8 bit workshop, using the open source tools apio and the Upduino version 3.0 by tinyvision.ai.
Requires Python
pip install -U apioTo use apio to the fullest, add the following entry to your boards.json file found in Appdata->Local->Programs->Python->Python38->Lib->site-packages->apio->resources
"upduino3": {
"name": "UPduino v3.0",
"fpga": "iCE40-UP5K-SG48",
"programmer": {
"type": "iceprog"
},
"usb": {
"vid": "0403",
"pid": "6014"
},
"ftdi": {
"desc": "UPduino v3.0"
}
},With apio now ready to go, you can use the commands apio verify, apio build and then apio upload
To program the UPduino 3.0, use Zadig that comes with apio via the command apio drivers --ftdi-enable to install appropriate USB driver.
SB_HFOSC was not stable enough to drive the PLL. From my research online, this is common for many boards and the best practice is to use an external crystal oscillator. The Upduino 3.0 has a very stable crystal oscillator on pin 12M.
Makefile added that will use apio commands verify, build, upload, and then clean.