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'