Making a PlayStation Link cable

[KDan]

Hi! I just wanted to make my own link cable but I couldn't find any pinouts for it. Do I have to swap only RX and TX?

[LameGuy64]

You can find the pinout right here:
http://hitmen.c02.at/html/psx_siocable.html

I built my own link cable by using the same wiring as a standard null modem cable but adjusted to go in line with the PlayStation's serial pinout. Handshake lines must be wired accordingly in case of games that use handshaking.

If you don't mind modding a pair of consoles replacing the proprietary Serial I/O port with a DB9 would make creating cables much easier.

[KDan]

You can find the pinout right here:
http://hitmen.c02.at/html/psx_siocable.html

I built my own link cable by using the same wiring as a standard null modem cable but adjusted to go in line with the PlayStation's serial pinout. Handshake lines must be wired accordingly in case of games that use handshaking.

If you don't mind modding a pair of consoles replacing the proprietary Serial I/O port with a DB9 would make creating cables much easier.

Do I have to connect the 3.3V too? I made a cable without the 3.3V line connected and I tried to play Duke Nukem 3D in multiplayer but it didn't work.

[LameGuy64]

No, don't connect the 3.3v line as that would likely fry something on the console.

Have you followed the standard null modem cable wiring when making the serial cable? (ie. tx -> rx, rx ->tx)

[KDan]

No, don't connect the 3.3v line as that would likely fry something on the console.

Have you followed the standard null modem cable wiring when making the serial cable? (ie. tx -> rx, rx ->tx)

I connected it like this on both sides:
DSR - DTR
RX - TX
RTS - CTS
GND - GND

[LameGuy64]

You're missing a few handshake lines. I think you need all handshake lines for it to work properly as some games likely need it.

Here's a reference to wiring a null modem cable with full handshaking: https://www.lammertbies.nl/comm/info/RS ... .html#full

[KDan]

You're missing a few handshake lines. I think you need all handshake lines for it to work properly as some games likely need it.

Here's a reference to wiring a null modem cable with full handshaking: https://www.lammertbies.nl/comm/info/RS ... .html#full

I wrote I've done it on both sides. This is what I think by that:

DSR - DTR
DTR - DSR
RX - TX
TX - RX
CTS - RTS
RTS - CTS
GND - GND

Sorry for inaccuracy.

[LameGuy64]

Well, the best advice I can give you by this point is to double check your wiring and make sure they are all correct.

[Xrider]

I have make a pcb for make a device compatible with siocons and other :