Pinouts
From Medusa
SCART
| Pin number | EURO version | JP21 version |
|---|---|---|
| 1 | - | Audio Left |
| 2 | Audio Right | - |
| 3 | - | GND |
| 4 | GND | GND |
| 5 | GND | Audio Right |
| 6 | Audio Left | - |
| 7 | Video Blue | GND |
| 8 | - | GND |
| 9 | GND | Composite Video / Video Luma |
| 10 | - | - |
| 11 | Video Green | - |
| 12 | - | - |
| 13 | GND | GND |
| 14 | - | GND |
| 15 | Video Red / Chroma | Video Red / Chroma |
| 16 | Blank (RGB detect) | Blank (RGB detect) |
| 17 | GND | GND |
| 18 | GND | GND |
| 19 | - | Video Green |
| 20 | Composite Video / Luma | Video Blue |
| 21 | GND | GND |
- '-' - means 'not connected'
- Blank - when average voltage on this pin is higher than 0.3V Medusa switches to RGB mode
Digital Input (DB9 - Rev B only)
| Pin number | MDA/Hercules mode | EGA mode | RGBI/CGA mode | Apple IIC mode |
|---|---|---|---|---|
| 1 | GND | GND | GND | Pin 13 / GND |
| 2 | - | Red 0 | - | Pin 2 / (14MHz - not used) |
| 3 | - | Red 1 | Red | Pin 6 / LDPS |
| 4 | - | Green 1 | Green | Pin 11 / SEROUT |
| 5 | - | Blue 1 | Blue | Pin 10 / GR |
| 6 | Luma 1 | Green 0 | Intensity | Pin 14 / (VIDD7 - not used) |
| 7 | Luma 0 | Blue 0 | - | Pin 4 / (SEGB - not used) |
| 8 | HSYNC | HSYNC | HSYNC | Pin 3 / CSYNC |
| 9 | VSYNC | VSYNC | VSYNC | - |
- '-' - means 'signal ignored in this mode'
- MDA/CGA/EGA and Commodore 128 - signals are in the same order as on computer output, so standard DB9 1:1 cable is enough to connect this machines to Medusa
- Apple IIC - to connect Apple IIC you need cable from DB15 to DB9 (pin numbers on DB15 are given in the table) - when you prepare cable for Apple IIC be aware that there is 12V on pin number 8 - DO NOT CONNECT THIS PIN !!! - it may destroy Medusa.
Analog Input (DB15 - VGA)
| Pin number | Function |
|---|---|
| 1 | Red |
| 2 | Green |
| 3 | Blue |
| 4 | - |
| 5 | GND |
| 6 | GND |
| 7 | GND |
| 8 | GND |
| 9 | - |
| 10 | GND |
| 11 | - |
| 12 | - |
| 13 | HSYNC/CSYNC |
| 14 | VSYNC |
| 15 | - |
- '-' means 'not connected'
