Mod Chips
Colormod
Installation
Compatibility
Modchip FAQ
What's New
HR 2281

What's New

1999.10.4
Supply-side problems have caused delays in some shipments. All pending orders have been shipped as of today.
1999.6.21
A new revision of the mainboard, PU-23, has appeared here in Japan. It is in the model SCPH-9000 (and presumably in U/C and PAL 9001/9002). Have not as yet prepared any documents for this, but see this page if you need more information immediately.
1999.6.15
A new release of the modchip FAQ will be forthcoming in early July. Any corrections/suggested new topics should be submitted by the end of June to be considered.
1999.5.18
PS-Mod Solutions will be on vacation from 5.25 to 6.1. All orders received after 5.23 will not be processed until 6.2.
1999.5.6
Working on the holiday backlog. All outstanding orders should be shipped by 1999.5.7 COB.
1999.4.29
The japanese Golden Week holiday period has begun. Post offices will be closed from 5.2 until 5.6 and no orders will be shipped until then.
1999.4.12
If anyone has very hi-resolution scans of the PU-7 and PU-8 mainboards (both sides), please email us. A future project is the complete overhaul of the install documents and we have no source of good scans of the whole mainboard without disassembling and desoldering the install from the PS-Mod Solutions testbed units, something we are loathe to do due to the age of these models. Credit will be given.
1999.4.12
Updated FAQ
1999.4.8
A note about source code - PS-Mod Solutions' codebase is not unmodified REI code. It has additional code added to produce some additional chip variants from a single source file. Functionality is added from REI code on an as-available basis. (PS-Mod Solutions is a REI field tester and receives experimental code in advance of general release, and participated in the original reversal effort, procuring the original chip and doing real-time testing while REI did not have programmer access.)
1999.4.8
Testing Stealth v2b based on (as yet unreleased) REI v5.6.2 code. Main feature is 4-wire compatability. There is a pin renumbering required for the v2b installation (pins 2 & 7 are reversed from the v2a install - this is in order to allow the pins to float correctly when disconnected in a 4-wire configuration.) Documentation will be ready when the chips are ready to ship.
1999.4.1
Created install documents for Stealth v2a for pu-18, pu-20 and pu-22.
1999.4.1
Fixed the pu-20 colormod installation image and created a pu-22 page.
1999.3.29
All orders shipping after 1999.3.28 will be Stealth v2a. The install will involve an extra wire (7 total). Installation documents will be forthcoming.
1999.3.17
A minor irregularity in the PU-18/PU-20 stealth install documents was corrected. A reference to the PU-22 jumper wire was removed.
1999.3.16
The online credit card ordering system is in place and functional. The content is not totally integrated, but orders may be placed.
1999.3.15
I expect to have a new system in place to take credit card orders within the week.
1999.3.12
Finished PU18 and PU20 stealth install documents.
1999.3.9
Please note, I can only provide support for my own chips. The install documents are a courtesy for everyone's use, but please do not expect me to support every random part that may or not be 100% compatable.
1999.3.9
Back from Singapore, but laid up with a cold. Working on stealth install diagrams for other consoles. If anyone has copies of the original mjohnson PU7 and PU8 10-wire install documents, please contact me - I need one of the images.
1999.2.24
PS-Mod Solutions will be in Singapore from March 2 through March 7 and will be unable to process orders during that time.
1999.2.11
Good news! Modified stealth code boots FF8.
1999.2.11
FF8 is out. Will be testing new version of the stealth code tonight.
1999.2.4
Spoke with Scott and the REI pages are undergoing a significant overhaul and will not be back until he's finished.
1999.2.4
The REI page is not currently available. This appears deliberate. I have no further information at this time, so please do not ask.
1999.1.28
PU-22 stealth chip installation document available. Other documents are forthcoming. Images courtesy of Drew Hamilton and used by permission.
1999.1.25
Chips that will properly work with the new "anti-modchip" games (i.e. Popolog, IQ Final, etc.) are now available. Install documents will be available later this week.
1998.12.26
In the process of upgrading the host machine's OS, the stripeset containing most of my recent email correspondence was corrupted. If you have sent mail recently and not received a reply, please resend.
1998.12.23
In answer to questions, the PU-22 AP code did not work when tested.
1998.11.24
Oops! The connections for pins 4 & 7 on the PU-22 install page are reversed. Corrected as of 09:00 JST.
1998.11.05
Moved all modchip content onto the modchip.aeug.org virtual server. Redirects from http://www.aeug.org/~dvc/modchip/ and http://www.aeug.org/~dvc/modinst/ are in place and will remain for the time being. If you are linking to http://www.aeug.org/~dvc/modchip.html, please update it. That redirect will be going away soon. Unfortunately since I cannot get it to compile on the new machine due to non-64-bit cleanliness issues, I've had to remove all of the Roxen-specific features and run the content on an Apache server.
1998.10.22
In response to several inquiries, the PU-22 chip code essentially uses the same method of operations (same timing datastreams, etc.), but also creates a weak-pull-up "bridge" in software between the two points connected by pins 4 and 7 on the chip. The same functionality could be achieved by connecting a pull-up resistor between these points and using a standard chip.
1998.10.22
Wrote code (untested) for PU-22 AP version.
1998.10.19
Wrote code (untested as yet) to run PU-22 on external crystal at PAL/NTSC colorburst frequency for use on ColorMod boards (although the PU-22 colormod does not need the external colorburst crystal). Integration of Anti-Piracy code into the same codebase still remains undone (my ultimate goal is a single unified source that conditionally assembles into colormod, AP, AP/colormod or standard versions and optionally adjust for 9813-9830-fab parts).
1998.10.18
Added conditional assembly of PU-22 code to work on 9813-9830 manufacture date chips (These have finally started appearing from Tokyo suppliers).
1998.10.16
Prepared an install document for the PU-22 chips that I'm offering. These are intended only for the chips that I am offering and I can't guarantee that it will work for other vendors' chips.
1998.10.16
For the time being I am not releasing PU-22 source code. This is being done because I have not integrated colormod and AP changes into the code as yet.
1998.10.14
Good news! The source that I received yesterday works for all model Playstations including the PU-22. I will be offering chips based off of a derivative of this code immediately. Install documents will be available by the weekend (these will only work with the new chips with PU-22 support - old chips will not function properly in PU-22 consoles).
1998.10.13
An anonymous source sent me source code and connection diagrams for a 5-wire chip that is supposed to work for all PU-22 boards (as well as in all prior models). Upon verification that this code functions (*STILL* no sightings of an SCPH-7500 in Japan - I need to send a chip to the US for testing), I'll place install diagrams online and start offering them.
1998.10.13
Started a page of notes on the PU-22 mainboard.
1998.10.09
If the dollar/yen rate holds steady I will be implementing a yen price drop.
1998.10.06
Due to popular demand I have created a preliminary PU-22 install document. It is essentially the same as the australian PU-22 mod and will use a standard chip and a switch. My final 4-wire version will require a special chip and a circuit trace cut, but does not require the switch.
1998.10.05
The SCPH-7501 has been reported on-sale in the US by several sources. The theoretical japanese SCPH-7500 has not been released here yet.
1998.10.05
The SCPH-7502 has been sighted in the UK as of this weekend.
1998.10.02
Added some info on the PU-22 mainboard to the FAQ page.
1998.09.30
I moved over the weekend. Please contact me for my new address if you have done business with me in the past. Mail will be forwarded for the near future.
1998.08.25
There is a new model mainboard PU-22 out there. They have thus far only been sighted in SCPH-7502 model consoles in Australia. I have been unable to obtain one in Japan as yet, so no install diagrams are available at present.
1998.07.21
All pending orders from during the holiday have been shipped. (1998.07.20 was a national holiday)
1998.07.21
As of 1998.08.17, First Virtual is discontinuing its Internet Payment System service. The system they are referring their current customers to does not seem to be friendly towards non-US based merchants. I will probably be forced to temporarily discontinue orders via credit card until I can get a merchant account with an overseas-friendly bank. Apologies for this, but notice from First Virtual was just given this weekend.
1998.07.15
Colormod installation instructions for PU-20 mainboards are being prepared for those with 700x models lacking multisystem TVs.
1998.07.13
We are back and working to fill all orders that backlogged during the holiday. Everything should be shipped by friday, 98.07.17.
1998.06.10
PS-Mod Solutions staff will be out of the country from 98.06.14 to 98.06.21 and 98.06.27 to 98.07.11. Any orders received from 98.06.12 to 98.06.21 will be processed during the week of 98.06.22-26 and any orders received from 98.06.26 to 98.07.12 will be processed during the week of 98.07.14-18.
1998.06.08
Info on SCPH-700x colormod compatibility added.
1998.06.02
Unfortunately I have been forced to raise japanese pricing due to the continued weakness of the yen.
1998.06.01
Updated compatability list
1998.05.28
A solution has been found to making post-SCPH-1000 japanese models work.
1998.05.26
Started reworking the site using faux-frames.
1998.05.18
All chip versions now available in Anti Piracy versions.


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