README.md

100ASK D1-H Dual Display DevKit

Main control: Allwinner D1-H C906 RISC-V 1GHz
DRAM: DDR3 512MB
Storage: Onboard 128MB spi-nand, support USB external U disk and SD card to expand storage
Network: Support 2.4G WiFi and Bluetooth, onboard antenna
Display: Support MIPI-DSI+TP screen interface, support HDMI output, support SPI screen
Audio: Microphone daughter board interface * 1, 3.5mm headphone jack * 1
Board size: length 90mm width 105mm thickness 1.7mm
PCB layer: 4+4 layers
Support Tina Linux，based on Linux 5.4 kernel

Name	Function	Path
hello world	Minimal program example, prints Hello World	`app/hello_world`
init dram	Initializes the serial port and DRAM	`app/init_dram`
load hifi4	Start and initialize the tf card through the C906 CPU, read the hifi4 dsp firmware from it, and load it for execution	`app/load_hifi4`
syter boot	Bootstrapping function that replaces U-Boot, enabling fast system startup for Linux	`app/syter_boot`