# ceda2vga
A video adapter for Sanco 8000 series computers, to use your handy flat-screen VGA display.

This project is part of a reverse engineering effort of a Sanco 8003 by [RetrOfficina GLG Programs](https://retrofficina.glgprograms.it/).
Also see [ceda-home](https://github.com/GLGPrograms/ceda-home).

<img src="img/ceda2vga.jpeg" width="320" />
<img src="img/vga-detail.jpeg" width="320" />

## How it works
A Raspberry Pi Pico syncs with a Sanco-generated frame, captures and stores it; then the frame is sent out as a VGA signal.
This project extensively uses pi2040's PIO peripheral and DMA capabilities.

## Setup
```
./setup.sh
```

## Development container
```
./work.sh
./build.sh

```

## Build
Circuit is extremely trivial, see [PDF schematics](board/ceda2vga.pdf).

### BOM
| component                   | # |
| --------------------------- | - |
| Raspberry Pi Pico dev board | 1 |
| DE-15 socket (female)       | 1 |
| 10kR resistor               | 5 |
| 1.2kR resistor              | 1 |
| 200R resistor               | 1 |
| 82R resistor                | 1 |
| 1kR resistor                | 1 |
| push button                 | 1 |

## License
SPDX-License-Identifier: GPL-3.0-only