480Z Connectors
The 480Z has a bewildering number of DIN sockets on the back.
Here are the pinouts. A trailing slash (/) on the signal name means active low. "N/C" is "not connected".
More information: 480Z Schematics
TTL RGB video
 |
- Audio Out
- Mixed Sync/
- Red
- Ground
- Blue
- Green
- Line (Horizontal) Sync/
- Frame (Vertical) Sync/
|
Monitor
 |
- Composite Video
- Ground
- Frame (vertical) sync
- Line (horizontal) sync
- Audio Output
- 'Wireframe Video'
|
Accessories
 |
- Analogue Output
- Joystick 1 Input
- +5V Out
- Ground
- Button 1
- Button 2
- Joystick 2
Buttons go from 'Button' input to ground. Joysticks are variable
resistors from +5V to the joystick pin) |
Cassette
|
- Signal to cassette recorder
- Recorder 1 motor control (TTL level to external relay box)
- +5V
- Ground
- N/C
- Signal from cassette recorder
- Recorder 2 motor control (see above)
|
Parallel I/O
|
|
Top Row |
|
Bottom Row |
 |
1 |
Data in 0 (Busy signal from Centronics printer if used as printer port) |
14 |
Data in 1 (Fault if used as printer port) |
| 2 |
Data in 2 |
15 |
Data in 3 |
| 3 |
Data in 4 |
16 |
Data in 5 |
| 4 |
Data in 6 |
17 |
Data in 7 |
| 5 |
Data out 0 (LSB of Centronics data if used as a printer port) |
18 |
Data out 1 |
| 6 |
Data out 2 |
19 |
Data out 3 |
| 7 |
Data out 4 |
20 |
Data out 5 |
| 8 |
Data out 6 |
21 |
Data out 7 (Centronics printer strobe) |
| 9 |
+5V |
22 |
Ground |
| 10 |
Input Strobe |
23 |
Ground |
| 11 |
Handshake output 1 |
24 |
Input Ready |
| 12 |
Handshake output 2 |
25 |
Handshake input 1 |
| 13 |
Handshake output 3 |
|
|
| Note: Handshake lines are ignored when used for Centronics printer.
Printer handshake/status comes in on the Data In lines. |
Serial I/O
|
4 (Full RS232 port from a Z80 SIO) |
2 (Bit-banged RS232 port for a printer) |
|
- RTS
- DTR
- TxD
- Ground
- CTS
- N/C
- DCD
- RxD
|
- N/C
- N/C
- TxD
- Ground
- CTS
- N/C
- N/C
- RxD
|
Credits: Thanks to Tony Duell for digging out this information.