ZX Spectrum Plus3 Serial
From HwB
Available at ZX Spectrum +3.
If it is needed to connect any serial devices to the +3 it requires a serial lead with connections as follows:
Pinout
___________________________
__| 6 5 4 3 2 1 |
|__ ### ### ### ### ### ### |
|___________________________|
RS232 socket
| Pin | Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | TXD | Transmit Data |
| 3 | RXD | Receive Data |
| 4 | DTR | Data Terminal Ready |
| 5 | CTS | Clear To Send |
| 6 | +12V | +12 VDC |