Making a PlayStation Link cable
- KDan
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Making a PlayStation Link cable
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
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Re: Making a PlayStation Link cable
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.
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.
Please don't forget to include my name if you share my work around. Credit where it is due.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
- KDan
- Curious PSXDEV User
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- Joined: January 30th, 2018, 6:48 am
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- PlayStation Model: SCPH-7502
- Location: Czech Republic
Re: Making a PlayStation Link cable
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 wrote: ↑December 7th, 2018, 1:28 pmYou 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.

- LameGuy64
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Re: Making a PlayStation Link cable
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)
Have you followed the standard null modem cable wiring when making the serial cable? (ie. tx -> rx, rx ->tx)
Please don't forget to include my name if you share my work around. Credit where it is due.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
- KDan
- Curious PSXDEV User
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- Joined: January 30th, 2018, 6:48 am
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- PlayStation Model: SCPH-7502
- Location: Czech Republic
Re: Making a PlayStation Link cable
I connected it like this on both sides:
DSR - DTR
RX - TX
RTS - CTS
GND - GND
- LameGuy64
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Re: Making a PlayStation Link cable
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
Here's a reference to wiring a null modem cable with full handshaking: https://www.lammertbies.nl/comm/info/RS ... .html#full
Please don't forget to include my name if you share my work around. Credit where it is due.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
- KDan
- Curious PSXDEV User
- Posts: 10
- Joined: January 30th, 2018, 6:48 am
- I am a: Noob xD
- PlayStation Model: SCPH-7502
- Location: Czech Republic
Re: Making a PlayStation Link cable
I wrote I've done it on both sides. This is what I think by that:LameGuy64 wrote: ↑December 9th, 2018, 1:05 pmYou'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
DSR - DTR
DTR - DSR
RX - TX
TX - RX
CTS - RTS
RTS - CTS
GND - GND
Sorry for inaccuracy.
- LameGuy64
- Psy-Q Enthusiast
- Posts: 387
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- I am a: Hobbyist Game Developer
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- PlayStation Model: H2000/7000
- Location: Philippines
- Contact:
Re: Making a PlayStation Link cable
Well, the best advice I can give you by this point is to double check your wiring and make sure they are all correct.
Please don't forget to include my name if you share my work around. Credit where it is due.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
Dev. Console: SCPH-7000 with SCPH-7501 ROM, MM3, PAL color fix, Direct AV ports, DB-9 port for Serial I/O, and a Xplorer FX with Caetla 0.35.
DTL-H2000 PC: Dell Optiplex GX110, Windows 98SE & Windows XP, Pentium III 933MHz, 384MB SDRAM, ATI Radeon 7000 VE 64MB, Soundblaster Audigy, 40GB Seagate HDD, Hitachi Lite-on CD-RW Drive, ZIP 250 and 3.5" Floppy.
- Xrider
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Re: Making a PlayStation Link cable
I have make a pcb for make a device compatible with siocons and other :









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