VGA-NES game console + USB gamepad (simulated keyboard)

This is a VGA game console based on the GD32F470ZGT6 (ported from the Liangshanpai game console), replacing the TFT LCD screen and using a VGA interface to drive a TV or projector.
 
Points to note are as follows:
1. The MCU circuit is
basically the same as the Liangshanpai. 2. The SDRAM circuit is basically the same as the Liangshanpai.
3. Onboard CH552GDAPLINK programmer.
4. The TF card driver circuit is
basically the same as the Liangshanpai. 5. The SPI-FLASH circuit is basically the same as the Liangshanpai.
6. Onboard EEPROM (not used).
7. The power supply circuit is basically the same as the Liangshanpai.
8. RGB565 to VGA circuit, referenced from: https://oshwhub.com/micespring/stm32h743-hu-xin-ban-vga-kuo-zhan-ban
9. CH374U-USB expansion circuit; a 24MHz crystal oscillator must be used.
10. The circuit board adopts a 4-layer board design, with the following stacking architecture:
11. The resolution is hardcoded at 800*600. It cannot be larger due to insufficient chip performance. It can be reduced in size; adjust it yourself in the TLI.c file. Notes on
 
 
the ST8H2K08U-based USB gamepad (simulating USB keyboard WASD JK Enter and Space) : 1. The STC8H2K08U uses USB programming. Press and hold the SELECT button to power on. After the STC-ISP recognizes the chip, click download. 2. The gamepad is not a simulated gamepad, but a simulated keyboard. A USB keyboard can also be plugged into the game console motherboard to add a joystick version of the gamepad using WASD JK Enter and Space. The code and SD card file are attached; please download them if needed.