emul/pico-zxspectrum
emul/pico-zxspectrum
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2
README.md
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@ -85,6 +85,7 @@ Click on the images below for more information ...
</tr> </tr>
</table> </table>
<a href="docs/ZxSpectrumPicomputerZx2Lcd.md"><img src="docs/picozx2lcd.png" width="280"/></a>
<a href="docs/pico_zx48_128.md"><img src="docs/pico_zx48_128_1.png" width="300"/></a> <a href="docs/pico_zx48_128.md"><img src="docs/pico_zx48_128_1.png" width="300"/></a>
<a href="docs/ZxSpectrumPicomputerZxLcd.md"><img src="docs/picozxlcd.png" width="280"/></a> <a href="docs/ZxSpectrumPicomputerZxLcd.md"><img src="docs/picozxlcd.png" width="280"/></a>
<a href="docs/ZxSpectrumPicomputerVga222Zx.md"><img src="docs/picomputer_picozx.png" width="300"/></a> <a href="docs/ZxSpectrumPicomputerVga222Zx.md"><img src="docs/picomputer_picozx.png" width="300"/></a>
@ -103,6 +104,7 @@ Click on the images below for more information ...
| [HDMI breadboard](docs/ZxSpectrumBreadboardHdmiNPinAudio.md) | Some breadboard HDMI options | | [HDMI breadboard](docs/ZxSpectrumBreadboardHdmiNPinAudio.md) | Some breadboard HDMI options |
| [VGA breadboard](docs/ZxSpectrum4PinAudioVga1111Ps2.md) | Some breadboard VGA options | | [VGA breadboard](docs/ZxSpectrum4PinAudioVga1111Ps2.md) | Some breadboard VGA options |
| [PICO ZX48/128](docs/pico_zx48_128.md) | ZX Spectrum 48K replacement board by Bobricius | | [PICO ZX48/128](docs/pico_zx48_128.md) | ZX Spectrum 48K replacement board by Bobricius |
| [PICOZX2 LCD](docs/ZxSpectrumPicomputerZx2Lcd.md) | ZX Spectrum with LCD and VGA Mk 2 by Bobricius |
| [PICOZX LCD](docs/ZxSpectrumPicomputerZxLcd.md) | ZX Spectrum with LCD and VGA by Bobricius | | [PICOZX LCD](docs/ZxSpectrumPicomputerZxLcd.md) | ZX Spectrum with LCD and VGA by Bobricius |
| [PICOZX](docs/ZxSpectrumPicomputerVga222Zx.md) | ZX Spectrum with VGA by Bobricius | | [PICOZX](docs/ZxSpectrumPicomputerVga222Zx.md) | ZX Spectrum with VGA by Bobricius |
| [RetroVGA](docs/ZxSpectrumPicomputerVga.md) | VGA micro-computer by Bobricius | | [RetroVGA](docs/ZxSpectrumPicomputerVga.md) | VGA micro-computer by Bobricius |

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docs/ZxSpectrumPicomputerZx2Lcd.md Normal file
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### ZxSpectrumPicomputerZx2Lcd
This is a target written for Bobricius' PICOZX mk 2 with built in LCD
<img src="picozx2lcd.png" width="400"/>
It supports:
* USB keyboard
* Keyboard martix
* USB joysticks
* VGA video (RGB222)
* LCD video (ST7789)
* PWM sound (1 pin)
* SPI SD card
By default, the board starts up using VGA as its display.
To boot into LCD mode hold down the 'fire' button during reset.
Placing lcd.txt on the SD card in the zxspectrum folder changes the default to LCD.
While on the menu...
* SHIFT-Fire = ESC
* RELOAD = Backspace
* SHIFT-RELOAD = Del
#### Circuit Diagrams
None as yet
#### Firmware
| LCD | Colour Encoding | Colour Channel | VGA | Sock | Firmware |
| - | - | - | - | - | - |
| ST7789 | BGR | Normal | 640x480x60Hz | Pico2 | [ZxSpectrumPicomputerZxLcd_640x480x60Hz.uf2](/uf2-rp2350-arm-s/ZxSpectrumPicomputerZx2Lcd_640x480x60Hz.uf2) |
| ST7789 | BGR | Normal | 720x576x50Hz | Pico2 | [ZxSpectrumPicomputerZxLcd_720x576x50Hz.uf2](/uf2-rp2350-arm-s/ZxSpectrumPicomputerZx2Lcd_720x576x50Hz.uf2) |
#### Build system notes
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 |
#### References
[ILI9341 datasheet](https://cdn-shop.adafruit.com/datasheets/ILI9341.pdf)<br/>

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src/CMakeLists.txt
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@ -291,4 +291,17 @@ if (${PICO_BOARD} STREQUAL "pico")
message("Relevant target: ZxSpectrumPicomputer") message("Relevant target: ZxSpectrumPicomputer")
add_dependencies(relevant ZxSpectrumPicomputer) add_dependencies(relevant ZxSpectrumPicomputer)
endif() endif()
########################################################################
# Picomputer 2 II (RP2350 Only)
########################################################################
add_custom_target (ZxSpectrumPicomputer2)
add_dependencies (ZxSpectrumPicomputer2
ZxSpectrumPicomputerZx2Lcd_640x480x60Hz
ZxSpectrumPicomputerZx2Lcd_720x576x50Hz
)
if (${PICO_BOARD} STREQUAL "pico2")
message("Relevant target: ZxSpectrumPicomputer2")
add_dependencies(relevant ZxSpectrumPicomputer2)
endif()