### MURMULATOR platform
There are variants of this board for VGA and HDMI output.

<img src="MURMULATOR_VGA_photo2.png" width="400"/>
<img src="MURMULATOR_VGA_photo1.png" width="400"/>

#### Circuit diagrams
<img src="Murmulator_BSchem_v1.JPG" height="300"/> 
<img src="MURMULATOR_Schem_v1.png" height="300"/>

#### Firmware
| Video | Audio | Display mode | Firmware Pico | Firmware Pico2 |
| - | - | - | - | - |
| HDMI | HDMI  | 720x576x50Hz | [ZX-MURMULATOR_HDMI_HDMI_AUDIO_720x576x50Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_HDMI_HDMI_AUDIO_720x576x50Hz.uf2) | [ZX-MURMULATOR_HDMI_HDMI_AUDIO_720x576x50Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_HDMI_HDMI_AUDIO_720x576x50Hz.uf2) |
| HDMI | PWM   | 720x576x50Hz | [ZX-MURMULATOR_HDMI_PWM_AUDIO_720x576x50Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_HDMI_PWM_AUDIO_720x576x50Hz.uf2) | [ZX-MURMULATOR_HDMI_PWM_AUDIO_720x576x50Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_HDMI_PWM_AUDIO_720x576x50Hz.uf2) |
| HDMI | I2S   | 720x576x50Hz | [ZX-MURMULATOR_HDMI_I2S_AUDIO_720x576x50Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_HDMI_I2S_AUDIO_720x576x50Hz.uf2) | [ZX-MURMULATOR_HDMI_I2S_AUDIO_720x576x50Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_HDMI_I2S_AUDIO_720x576x50Hz.uf2) |
| HDMI | HDMI  | 640x480x60Hz | [ZX-MURMULATOR_HDMI_HDMI_AUDIO_640x480x60Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_HDMI_HDMI_AUDIO_640x480x60Hz.uf2) | [ZX-MURMULATOR_HDMI_HDMI_AUDIO_640x480x60Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_HDMI_HDMI_AUDIO_640x480x60Hz.uf2) |
| HDMI | PWM   | 640x480x60Hz | [ZX-MURMULATOR_HDMI_PWM_AUDIO_640x480x60Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_HDMI_PWM_AUDIO_640x480x60Hz.uf2) | [ZX-MURMULATOR_HDMI_PWM_AUDIO_640x480x60Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_HDMI_PWM_AUDIO_640x480x60Hz.uf2) |
| HDMI | I2S   | 640x480x60Hz | [ZX-MURMULATOR_HDMI_I2S_AUDIO_640x480x60Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_HDMI_I2S_AUDIO_640x480x60Hz.uf2) | [ZX-MURMULATOR_HDMI_I2S_AUDIO_640x480x60Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_HDMI_I2S_AUDIO_640x480x60Hz.uf2) |
| VGA | PWM    | 720x576x50Hz |[ZX-MURMULATOR_VGA_PWM_AUDIO_720x576x50Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_VGA_PWM_AUDIO_720x576x50Hz.uf2) | [ZX-MURMULATOR_VGA_PWM_AUDIO_720x576x50Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_VGA_PWM_AUDIO_720x576x50Hz.uf2) |
| VGA | I2S    | 720x576x50Hz |[ZX-MURMULATOR_VGA_I2S_AUDIO_720x576x50Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_VGA_I2S_AUDIO_720x576x50Hz.uf2) | [ZX-MURMULATOR_VGA_I2S_AUDIO_720x576x50Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_VGA_I2S_AUDIO_720x576x50Hz.uf2) |
| VGA | PWM    | 640x480x60Hz |[ZX-MURMULATOR_VGA_PWM_AUDIO_640x480x60Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_VGA_PWM_AUDIO_640x480x60Hz.uf2) | [ZX-MURMULATOR_VGA_PWM_AUDIO_640x480x60Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_VGA_PWM_AUDIO_640x480x60Hz.uf2) |
| VGA | I2S    | 640x480x60Hz |[ZX-MURMULATOR_VGA_I2S_AUDIO_640x480x60Hz.uf2](/uf2-rp2040/ZX-MURMULATOR_VGA_I2S_AUDIO_640x480x60Hz.uf2) | [ZX-MURMULATOR_VGA_I2S_AUDIO_640x480x60Hz.uf2](/uf2-rp2350-arm-s/ZX-MURMULATOR_VGA_I2S_AUDIO_640x480x60Hz.uf2) |

#### References
[YouTube](https://www.youtube.com/watch?v=yE_ELX6RpBc)<br/>