I now have a Playstation coders cable on sale.
Simple design, works under all operating systems. Works with the PSXSERIAL code upload tool, which can be downloaded here http://www.psxdev.net/forum/viewtopic.php?f=60&t=378. Also works with Shendo’s BIOS Dumper and PS1 cardlink. Compatible with all models other than the PSOne (it doesn’t have an external serial port).
Drivers for the cable are available from here http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx
Only £12.50 + Shipping and will ship worldwide. (Europe typically around £3-4) + Add 5% PayPal fees if paying via PayPal
Compatible Software
PSXSERIAL http://www.psxdev.net/forum/viewtopic.php?f=69&t=378
QPSXSERIAL http://www.psxdev.net/forum/viewtopic.php?f=62&t=1307
PSXCardlink http://www.psxdev.net/forum/viewtopic.php?f=62&t=474
BIOS Dumper http://www.psxdev.net/forum/viewtopic.php?f=62&t=395
Update 01/01/2018: I still have these cables for sale and are shipping pretty much worldwide. Email me at danhans115@ntlworld.com with any enquiries
danhans42's psx blog 
Do you have a storefront?
No, not at the moment. if you have any questions or are interested drop me a line on twitter @danhans42 or leave your email address here and I will get back to you
Interested in one of these cables, can you get back to me? mspokes-at-gmail.com
Hi Matt thanks for your interest will drop you an email shortly with further details.
Thanks
Dan
Hi. I like to get one too.
Do you need this assembly if your Pc still has a serial port?
Could i just cut cables and connect all the lines (tx/rx crossed)?
You can’t connect it up to a tradition serial port because the psx uses CMOS levels which are 0 to 3.3v and RS232 uses anything upto – 12 to +12v
If you want a cable leave your email address in the comments (I won’t publish it) along with your address details and will get you an anacxutate quote including postage
I’ll take one!
Sorry for late reply. I have some USB conveters that were stuck in HK customs.. They are due any time soon so will have more stock for end of december.
hows the sicons one going? im interested in both 🙂 or a premade board to modify a psone would be even nicer
Ive shelved it for the time being. Look on ebay for a ftdi adapter from a company in the UK called byvac electronics. Their 3.3v variant is perfect and requires no external circuitry.
Hey Dan,
I know this is a super late reply. But i would love to buy one PSXSERIAL cable. Is it still available in any case ?
Thank you
-oli
Hi Oli,
Cables are still available. Drop me a message on here with your email address and I will let you know the details.
Thanks
It’s ondrejrehacek(at)gmail(dot)com
Thanks a lot ! 🙂
Have a nice day.
Hello
I would like to buy one of these cables. Are they still available?
Thanks
Hi, I’ve bought two of these before and would like to buy two more please! I’ve got a few PSX consoles in different buildings and sometimes don’t remember to bring the cable for moving my save files to my laptop with your memorycardrex software. sam@samspin.com