This is a target written for Bobricius' PICOZX with built in LCD
It supports:
- USB keyboard
- Keyboard martix
- USB joysticks
- VGA video (RGB222)
- LCD video (ST7789/ILI9341)
- PWM sound (1 pin)
- SPI SD card
By default, the board starts up using the LCD as its display. To boot into VGA mode hold down the 'fire' button during reset. Placing vga.txt on the SD card in the zxspectrum folder changes the default to VGA.
While on the menu...
- SHIFT-Fire = ESC
- RELOAD = Backspace
- SHIFT-RELOAD = Del
The firmware produces RGB 222 for the VGA out:
LCD | Colour Encoding | Colour Channel | VGA | Board | Firmware |
---|---|---|---|---|---|
ST7789 | BGR | Normal | 640x480x60Hz | Bobricius | ZxSpectrumPicomputerZxLcd_640x480x60Hz.uf2 |
ST7789 | BGR | Normal | 720x576x50Hz | Bobricius | ZxSpectrumPicomputerZxLcd_720x576x50Hz.uf2 |
ST7789 | BGR | Inverted | 640x480x60Hz | ZxSpectrumPicomputerZxInverseLcd_640x480x60Hz.uf2 | |
ST7789 | BGR | Inverted | 720x576x50Hz | ZxSpectrumPicomputerZxInverseLcd_720x576x50Hz.uf2 | |
ILI9341 | RGB | inverted | 640x480x60Hz | ZxSpectrumPicomputerZxILI9341Lcd_640x480x60Hz.uf2 | |
ILI9341 | RGB | inverted | 720x576x50Hz | ZxSpectrumPicomputerZxILI9341Lcd_720x576x50Hz.uf2 |
The make system has some switches to adapt it to different LCD panels:
Symbol | Description | PICOZX | ILI19341 |
---|---|---|---|
LCD_INVERSE | invert the brightness of the RGB color components | undefined | defined |
LCD_MIRROR_X | Mirror the LCD output horizontally | defined | undefined |
LCD_RGB | Use RBG order rather than BGR | undefined | defined |
ILI9341 datasheet
hackster
raspberrypi.com
Bobricius on YouTube
Bobricius PCBWay
Pixel Fandango on YouTube