playstation 1 slim lcd screen free sample

A bottom-up comparison of the SCPH-1000, SCPH-3000, SCPH-5501, and SCPH-9001. The SCPH-900x revision saw the removal of the parallel I/O port while the RCA connectors were removed in the SCPH-550x revision and the S-Video port was removed in the SCPH-1001 revision.

The PlayStation went through a number of variants during its production run, each accompanied by a change in the part number. From an external viewpoint, the most notable change was the gradual reduction in the number of external connectors from the back of the unit. This started very early on with the original Japanese launch units; the SCPH-1000, released on 3 December 1994, was the only model that had an S-Video port, which was removed on the next release.printf function and developers had to use another function instead.

The PAL region consoles from SCPH-1002 up to SCPH-5552 were different from the systems released in other regions in that they had a different menu design; a grey blocked background with square icons for the Memory Card (an icon showing a PlayStation with 2 memory cards inserted) and CD player (an icon with musical keyboards) menus. The CD player also included reverberation effects unique to those systems until the release of the PS one in 2000, which featured a slightly modified version of the BIOS.

With the release of the SCPH-5000 series being produced only in Japan, it followed the same exterior design as the Japanese SCPH-3xxx series, its only differences being that it was switched to Rev. C hardware (same as late 1001/1002 units) with some upgrades to flawed components from previous models and a reduced retail price. This was followed by the first major consolidation, SCPH-550x/5001 and PAL-exclusive SCPH-5552 units, released in April 1997. This model further addressed the reliability issues with the disc drive assembly by placing the drive further away from the power supply in order to reduce heat; the chipset was also redesigned to use digital servo for focus/tracking and also to auto-calibrate the drive, as opposed to manual gain/bias calibration on earlier models. Also, shielding and PSU wiring were simplified, and from the SCPH-5001 on the RCA jacks and RFU power connectors were removed from the rear panel and the printed text on the back was changed to reliefs of the same. Starting with the SCPH-550x series, PAL variants had the "power" and "open" buttons changed from text to symbols, something that would later appear on the redesigned PS one. Originally, the PlayStation was supposed to have provision on Video CD support, but this feature was only included on the Asian exclusive SCPH-5903 model.

These were followed by the SCPH-700x and SCPH-750x series, released in April 1998—they are externally identical to the SCPH-500x machines, but have internal changes made to reduce manufacturing costs (for example, the system RAM went from 4 chips to 1, and the CD controller went from 3 chips to 1) and these were the last models to support parallel port for Gameshark devices and Xploder Pro. In addition, a slight change of the start-up screen was made; the diamond remains unchanged but the font used for Sony Computer and Entertainment is now consistent, making the words appear smaller than the diamond overall, and the trademark symbol (™) is now placed after "Computer Entertainment" instead of after the diamond, as it was on the earlier models. New to the SCPH-700x series was the introduction of the "Sound Scope" – light show music visualizations. These were accessible by pressing the Select button while playing any normal audio CD in the system"s CD player. While watching these visualizations, players could also add various effects like color cycling or motion blur and can save/load their memory card. These were seen on the SCPH-700x, 750x, 900x, and PS one models.

The final revision to the original PlayStation was the SCPH-900x series, released in May 1999. These had the same hardware as the SCPH-750x models, except the parallel port was removed and the size of the PCB is further reduced. The removal of the parallel port is partially due to the fact that Sony did not release an official add-on for it; it was used for cheat cartridges, and for the parallel port to defeat the regional lockouts and copy protection. The PlayStation Link Cable connection was supported by only a handful of games. The SCPH-900x was the last model to support it, as the Serial I/O port was removed on all PS one models.

The PS one, released on 7 July 2000, was originally based on essentially the same hardware as the SCPH-900x; the serial port was removed, the controller/memory card ports moved to the main PCB and the internal power supply replaced with an external 7.5VDC power adapter with the other required power rails being generated internally on the main using a mixture of regulators and DC/DC converters for the various rails. It also incorporated a slightly modified version of the menu design previously used only on PAL consoles. The later revision (still designated as SCPH-10x but with a different PM-41(2) main circuit board) was functionally identical, but reduced manufacturing cost for a last time by moving to more highly integrated chips, namely the replacement of external RAM with on-chip RAM, which both reduced the parts count and allowed the use of smaller and cheaper packages by reducing the number of pins required.

There were also debugging consoles - these were generally in either blue or green cases, although there were some special production units (mostly intended for use as show demo units) that were grey, the same as the retail consoles. The debug units were designed to be as close as possible to retail consoles, so they only had 2MB of ram (the developer boards had 8MB) and had standard retail boot ROMs. The only real difference is that the CD controller was reprogrammed so that it would identify any disc that had a data track as being "licensed", rather than requiring the region code in the lead-in that was present on pressed PlayStation CDs. This was done to allow developers to burn games to CD-R for testing. A side-effect of this was that most debug consoles would also boot discs from other regions (one notable exception being the later NTSC:J debugs, which only boot Japanese titles), although this was not officially supported. Sony made specific debug consoles for each region, and the TRC (technical requirement checklist) provided by Sony for each region required testing the title on the correct debug stations.

The reason for the two different case colors was a hardware change that Sony had made fairly early in the PlayStation production cycle - the original machines were built using Rev. A (early Japan market units) or Rev. B (later Japan units, US and Europe) hardware, both using the same GPU with VRAM to store the video data. Later models used Rev. C silicon and SGRAM - although the two chipsets had very similar performance, and Rev. C was explicitly designed with compatibility in mind, they were not identical - the Rev. C version was significantly faster at doing alpha blending, and hence the PS "semitransparent" writing mode - it was also rather slow at certain screen memory block moves (basically, ones involving narrow vertical strips of the display) on top of this there were some minor hardware bugs in the older silicon that had been addressed by including workarounds for them in the libraries - the later library versions checked the GPU type at startup time and disabled the patches if they were not needed. Because this made the two machine types quite significantly different from each other, the developer had to test the title on both machines before submitting. The blue debugs (DTL-H100x, DTL-H110x) had the old silicon and the green ones (DTL-H120x) had the new silicon.

In 1997, Sony released a version of the PlayStation called the Net Yaroze. It only came via mail order and was more expensive than the regular PlayStation ($750 instead of $299 for the original PlayStation). It had a matte black finish instead of the usual gray, and most importantly, came with tools and instructions that allowed a user to be able to program PlayStation games and applications without the need for a full development unit, which was more expensive than a normal PlayStation (official development kits cost around $50,000.00 at the time). It was only available to approved video game developers, who needed to sign an agreement that they wouldn"t distribute their games to anyone else or try to reverse-engineer the hardware. The Net Yaroze lacked many of the features the full developer suite provided, lacking the on-demand support and code libraries that licensed developers had.Ridge Racer ran entirely from the system RAM (except for the streamed music tracks).regional lockout; it would play games from any territory. It would not however play CD-R discs, so it was not possible to create self-booting Yaroze games without a modified PlayStation.

The PS One (officially stylized as PS one and alternatively spelled PSOne and PSone) is a smaller, redesigned version of the original PlayStation platform.PlayStation 2.

Sony also released a version with a 5-inch LCD screen and an adaptor (though it did not have a battery: it is powered by plugging the adaptor in a main socket, or in a car). It was called the Combo pack. However, it includes a headphone jack (for headphones or other audio connection) and an AV mini jack for connecting camcorders or other devices.

Available in Midnight Blue as a promotional item to commemorate the 10 millionth PlayStation sold, this is a Japanese-region console that has a unique BIOS based on the USA NTSC-U/C version that allowed imported games from any region to be played.

The first batch of PlayStations used a KSM-440AAM laser unit whose case and all movable parts were completely made out of plastic. Over time, friction caused the plastic tray to wear out—usually unevenly. The placement of the laser unit close to the power supply accelerated wear because of the additional heat, which made the plastic even more vulnerable to friction. Eventually, the tray would become so worn that the laser no longer pointed directly at the CD and games would no longer load. Sony first addressed the problem by making the tray out of die-cast metal, and additionally also placed the laser unit farther away from the power supply on later models of the PlayStation.

Some units, particularly the early 100x models, would be unable to play FMV or music correctly, resulting in skipping or freezing. In more extreme cases the PlayStation would only work correctly when turned onto its side or upside down.

"PlayStation Cumulative Production Shipments of Hardware". Sony Computer Entertainment. Archived from the original on 2011-05-24. Retrieved 2012-01-27.

I bought the screen from Total Console for my husband. He has a few old PlayStation games he likes, and wants to be able to play now and again, so I figured this would be the best way allow him to do that and not have to have it hooked to the TV all the time. I had some difficulty, but it was not the fault of Total Console. Rather, there were some things I had to learn along the way that I will pass along that may help someone else.

1. The screen is touchy. It may not work with the standard PSOne adapter (model SCPH-113). You may need the adapter that was specially made for this screen (it has a little more juice), which is model SCPH-121. I found one on eBay. When using the 113 adapter, I would get sound, and shadows, but the screen was really dark and you could not make anything out.

2. The screen is fussy. Even after obtaining the correct adapter, I was getting the shadows. Total Console was extremely helpful, and I was setting up a return when, on a whim, I plugged it into the wall (I had prior used an extension cord and a power bar - the outlets in my house are oddly placed). It lit right up. I was amazed. As long as it"s plugged into a wall, it works great. (Our screen doesn"t work correctly with the 113 adapter, even plugged into the wall - a google search showed that this is sometimes an issue, other times not).

Sony PlayStation consoles have generally been the go-to platform for many gamers since the mid-1990s, with the exception of one or two generations. In fact, it’s not uncommon to hear PlayStation being used as a generic term for consoles in general.

The PlayStation 5 is the company’s latest console, but what about prior releases? We’re taking a look at PlayStation history, from the very first console all the way through to the latest bleeding-edge machine.

The first PlayStation was originally conceived as a result of a 1991 partnership between it and industry bigwig Nintendo. The house of Mario wanted to release a CD-based add-on console for the Super Nintendo Entertainment System (SNES) at the time, and enlisted Sony to develop the machine.

Nintendo took Sony by surprise when it announced a partnership with Philips for an add-on instead at the 1991 CES expo. Sony wasn’t keen to ditch all its work that went into the machine and therefore chose to launch a standalone PlayStation in 1994. The $299 price tag in the US also undercut Sega’s Saturn by a considerable $100, with Sony infamously announcing this price at E3 1995.

The PS1 was among the first wave of consoles capable of delivering 3D visuals, while also being arguably the first CD-based console to really gain widespread, global popularity. This differed from its arch rival’s offering, the Nintendo 64, which still used cartridges. CDs had much slower loading times than cartridges but offered 700MB of data compared to the maximum of 64MB of storage seen on later N64 games. This allowed PS1 developers to cram tons of in-game content, plenty of hours of audio tracks/voice acting, and loads of video content into their games. In fact, it wasn’t uncommon to see N64 ports of PS1 games — like Tony Hawk’s Pro Skater — lacking music tracks, more voice acting, and/or videos.

Sony later released the PlayStation One in 2000, featuring a much smaller design. And in 2019, the company released the throwback PlayStation Classic mini-console (seen above), albeit to mixed reviews.

Some of the more prominent games released for the PlayStation include the Wipeout series, Final Fantasy 7, Tekken franchise, Gran Turismo 1 and 2, Metal Gear Solid, Ape Escape, Spyro the Dragon series, and the Crash Bandicoot franchise.

The console originally launched with a controller that featured no analog sticks or vibration, but Sony launched a Dual Analog and then “DualShock” controller in 1997. This wouldn’t be the last time a PlayStation console underwent a controller change during its time on the market.

Sony also released a special developer-focused console dubbed the Net Yaroze PlayStation, allowing users to develop their own games. These are among the most sought-after PlayStation consoles these days for collectors.

Some PlayStation models suffered from a defect that would eventually affect the laser, leading to games failing to load and other technical issues. The solution? Turn your PlayStation console upside down.

Sony later launched a Pocket Station accessory, similar to Sega’s VMUs for the Dreamcast. This was essentially a memory card with a screen, allowing you to play simple games on it.

How do you follow up on the wildly successful PlayStation? Well, you release the $299 PlayStation 2, which managed to eclipse the original console in nearly every way. Released in 2000, Sony embraced the multimedia experience by offering support for DVDs. This was a big deal because the PS2 actually became one of the cheaper DVD players on the market at the time.

It wasn’t the most powerful console of the era though, as the Microsoft Xbox and Nintendo GameCube often enjoyed better-looking graphics. But studios that put in the time and effort were able to deliver gorgeous games like Gran Turismo 4, Metal Gear Solid 2, Shadow of the Colossus, and the God of War titles. In fact, we got our first taste of HD games during this era, albeit at 1080i like Gran Turismo 4 and Tourist Trophy.

Another major feather in the PS2’s cap was backward compatibility with PS1 games, which meant you didn’t have to abandon your entire collection of older PlayStation games.

As for the controller, Sony opted to essentially keep the PS1’s DualShock design. However, the company also made the face buttons pressure-sensitive, so pressing “X” harder would result in faster acceleration in racing games, for example.

Aside from the original PS2, the Japanese colossus also launched a slimline PS2 (seen above). This differed from the original model by being much smaller and thinner, having a top-loading disc drive (as opposed to a disc tray), and also incorporating a modem.

The early launch relative to rivals, combined with massive third-party support, DVD playback, and backward compatibility all contributed to it being the most popular console ever made. In fact, the machine is believed to have sold nearly 160 million units to date.

Some of the first few waves of PlayStation 2 consoles suffered from a so-called DRE (disc read error) hardware flaw, which saw some games and DVDs failing to read at all. This resulted in a lawsuit that was settled out of court.

The company also launched a Broadband Adapter for online play as well as a hard drive too. Both accessories plugged into the back of the original PS2s, but this expansion bay was removed when the slimline PS2 launched.

One particularly interesting PS2 variant was the Japan-only PSX, which combined a PS2 with DVR functionality (featuring a 160GB or 250GB hard drive) and DVD burning. This was also the first PlayStation device to use the Xross Media Bar UI, later seen on the PSP and PS3.

Between the PS2 and PS3 launches, Sony decided to launch the first handheld in PlayStation history with the PlayStation Portable (PSP) back in 2004. Unlike Nintendo and its conservative approach to handheld power, Sony took the brute-force approach with the PSP by offering a processor that was closer to the Dreamcast and PS2. This resulted in many ports of contemporary home console titles.

The PSP also delivered features like Sony’s Memory Card Pro Duo format for storage, a built-in web browser, and a large LCD screen. Toss in multimedia playback functionality and Wi-Fi, and you had a feature-packed handheld for the time.

Sony would go on to launch several PSP revisions during its lifetime. The first was the PSP Slim (or PSP-2000), featuring a sleeker design, USB charging, and double the RAM and storage. We also saw the PSP-3000 (featuring a better screen and integrated mic), the PSP Go (with a slideout gamepad, no UMD drive, and 16GB of internal storage), and the PSP Street (ditching Wi-Fi).

Sony originally demonstrated the ability to use a PSP as a rearview mirror in an F1 racing game for the PS3, but this feature never made it into a commercial game.

Flush with success after the PS1 and PS2, Sony had all the confidence in the world when it revealed the PS3. Or was it arrogance? Judging by its infamous E3 2006 press conference, we’d go with the latter.

The PS3 was filled to the brim with exotic and/or cutting-edge tech at launch, such as a purpose-built Cell processor, Nvidia RSX GPU, and a Blu-ray drive. And this was Sony’s first console designed with HD from the get-go, supporting an HDMI output and 1080p resolution. The company even offered support for PS2 games by including the PS2’s hardware in the new console.

All of this tech came at a price though, and the announcement of a $499 price tag for the base 20GB variant (or $599 for the 60GB model) at E3 2006 drew gasps from the crowd in attendance. PlayStation godfather Ken Kutaragi would double down on the decision by insisting that people would want to work more hours in order to be able to buy the new console. Sheesh.

The PS3 underwent several cost-cutting revisions in its lifecycle, with Sony killing PS2 support a couple of years in by removing the relevant silicon, introducing a slim model, and then later offering a super-slim option. These measures all meant that the PS3 eventually became a more affordable proposition. Combine the price tag with the excellent games library, and it’s no wonder the PS3 eventually outsold the Xbox 360 globally.

Sony followed up on the PSP with the PlayStation Vita in 2012, and it makes a strong argument for being one of the most technologically impressive handheld consoles of all time. Featuring a gorgeous OLED screen, dual analog sticks, and a slick design, the Vita definitely made a favorable first impression.

The PlayStation Vita originally shipped with no meaningful internal storage, forcing users to buy memory cards to store digital downloads and saves. Unfortunately, Sony opted for expensive proprietary storage media, starting at $20 for a 4GB memory card all the way to $100 for a 32GB card. Even a measly 16GB card retailed for $60 at launch. No wonder third-party adapters surfaced which allowed you to use SD cards.

Sadly, the PS Vita was a notable flop. It sold just over 16 million units to date, according to VGChartz. Meanwhile, the Nintendo 3DS has sold over 75 million units according to the Japanese company’s website. In other words, even the Nintendo GameCube, which lagged behind the PS2 and Xbox in terms of sales, outsold the Vita. This makes it the least successful console in PlayStation history.

Some of the more prominent games released on the Vita include Tearaway, Gravity Rush, Killzone Mercenary, Persona 4 Golden, Uncharted: Golden Abyss, and Dragon’s Crown. Fortunately, the console was also compatible with PSP and PS1 titles.

Sony released the PlayStation TV in 2013, which was a mini-console designed to be hooked up to a TV. Users could connect their PS3 or PS4 controller to the machine, playing some Vita and PSP titles as well as using it for streaming video.

The Vita gained a reputation as a haven for indie games, with numerous titles like Luftrausers, Spelunky, Fez, Guacamelee, and Bastion appearing on the handheld. In fact, indie titles were still being developed for the platform in 2021.

Sony released the Vita Slim a few years after the original model. The new device was thinner as the name implies, but it also brought an LCD screen, 1GB of internal storage, standard micro-USB charging, and longer battery life.

The Japanese giant announced plans to shutter the PS Vita (and PS3) online storefront in Summer 2021. It then halted the plans following an outcry from consumers.

It seemed like Sony learned its lesson with the PS3, as 2013’s PS4 launched at a solid $399 price tag and opted for largely conventional hardware. The PS4 offered an AMD APU, featuring an octa-core Jaguar-based CPU, custom AMD graphics, and 8GB of GDDR5 RAM. This was largely similar to the Xbox One, but with Sony’s console offering more impressive AMD graphics and faster RAM.

One big downer was that the PS4 doesn’t support older PlayStation titles such as the PS3 and PS2 libraries. Instead, some PS2 games were re-released as “Classics” titles for digital download. This was in sharp contrast to the Xbox One, which offered backward compatibility with loads of Xbox 360 and original Xbox titles.

Sony also introduced a revised DualShock 4 controller with the new console, featuring a trackpad, a light strip on the back of the gamepad, and a “Share” button so users can quickly share screenshots and videos.

The Japanese company later launched the PS4 Slim and PS4 Pro in 2016, with the former offering a thinner, more compact design. The latter upped the ante with much faster CPU clock speeds, beefed-up graphics, and 4K gaming support (via so-called checkerboard rendering).

Unlike the PS3, which offered free online multiplayer access, PS4 owners need to buy a PlayStation Plus subscription to play most paid games online. This was in line with arch-rival Microsoft’s long-standing policy.

Sony launched a Playroom live-streaming app alongside the PS4, allowing users to stream video with the included PlayStation Camera to the likes of Twitch. Twitch would crack down on Playroom streams shortly after launch due to people streaming all manner of unsavory/illegal content.

VR gameplay came to the PS4 thanks to the PlayStation VR headset, with support for a variety of games. Notable titles include Astro Bot Rescue Mission, Resident Evil 7, Ace Combat 7, Beat Saber, Gran Turismo Sport, and Tetris Effect.

Sony’s latest console is the PlayStation 5, and it represents another major step forward in terms of technology. The Achilles heel of the PS4 was the CPU, which was actually built with low-end tablets and netbooks in mind. But Sony upgraded things in a big way with the PS5, using an octa-core AMD Zen 2 CPU paired with RDNA2 graphics and 16GB of GDDR6 RAM.

The PS5’s horsepower means it delivers native 4K gameplay for many games compared to the PS4 Pro’s checkerboarded/upscaled 4K for most titles (and the PS4’s 1080p support). Sony’s newest machine also brings 60fps and even 120fps gameplay to the table for smoother performance, as well as 40fps gaming for some titles.

Look closely at the PS5’s gamepad rear grips and you’ll see that it’s covered in a textured pattern of triangles, squares, Xs, and circles. This is obviously a nod to the iconic PlayStation face button symbols.

Sony announced an all-you-can-eat subscription gaming service for the platform in March 2022. The service is divided into three tiers, with the first being the existing PlayStation Plus service and the other two dubbed PlayStation Plus Extra and PlayStation Plus Premium. The latter option also gives you access to PS2 classics and titles ported from other PlayStation consoles.

That’s it for our look at the history of PlayStation consoles! How many PlayStation machines do you own? Let us know in the comments below. And give us your pick for your favorite PlayStation console via the poll.

After Sony"s partnership with Nintendo fell through, all work on the console from the time of the partnership with Nintendo was scrapped, and the PlayStation design was restarted from scratch. Sony Computer Entertainment America originally planned to market the new console under the abbreviation "PSX" as the name "PlayStation" was negatively received in focus group studies. Early advertising prior to the console"s launch in North America used the PSX abbreviation, but the term was dropped before the console"s launch.

SONY PLAYSTATION 5Play Has No LimitsExperience lightning-fast loading with an ultra-high-speed SSD, deeper immersion with support for haptic feedback,adaptive

You may have heard about aspect ratio of TV’s. 4 by 3 (written 4:3), 16:9, widescreen, standard definition and so on. I wont go to much into it but will give you a quick overview.

At the end of the classic CRT / Tube Television era, widescreen was starting to become the thing. As such there were a few high-definition, widescreen CRT’s right before flat screens took over the world. Before that, every TV was in 4:3 ration. The 4 refers to the width of the screen and the 3 to the height. So 4:3 is a little wider than it is tall. For example, for every 1 inch of height you would have 1.33 inches of width. New HDTVs have a ration of 16:9. This works out to 1.79 inches wide for every 1 inch in height.

So why does this matter? Because almost every game system was built to display in a 4:3 ratio until around the original XBOX and Playstation 2. There are a handful of titles for the SEGA Dreamcast and original SONY Playstation that support widescreen, but not many. And when you’re talking about the SNES or SEGA Genesis, you can forget about it. When you connect a retro system up via HDMI it will not show you more of the map for instance than you could see before on a 4:3 TV. It will have “black bars” on the left and right of the 4:3 image, which gets centered on your 16:9 TV. This is completely fine and normal, but there are some options if you want it to fill the screen.

• If you have both PlayStation Messages and PlayStation App installed, change the settings on your device so that PlayStation App does not automatically close in the

• If you have both PlayStation Communities and PlayStation App installed, change the settings on your device so that PlayStation App does not automatically close in the background.

• If you have both PS4 Second Screen and PlayStation App installed, change the settings on your device so that PlayStation App does not automatically close in the background.

I’ve been selling PS1 modchips on eBay for a while now. This post aims to be the ultimate source of information on PS1 modchips, including how to install them into every version of the PlayStation 1. I may have sent you here if you were looking for installation diagrams, or had questions a bout how to install the modchip. Continue reading and I’ll answer those questions and more.

This page is the starting point of the guide. It includes some frequently asked questions about PlayStation 1 modchips in general, and then links off to more information about each type of chip, and those pages link off to installation guides for each console model.

I’m not a PlayStation 1 modchip expert. This guide has been put together from a combination of my experience, and what I have found online. Many of the sources for PlayStation 1 modding information have gone offline, or are spread out across many forum threads.

My goal is to have a single guide that covers as much information as possible, making it easier for everyone to get solid information about PlayStation 1 modchips. If you have any suggestions, corrections, or additional information, please leave a comment and I’ll be happy to update this guide.

There is a lot you can do to a PlayStation 1 other than just install a modchip. This section covers some of the popular mods you can do to improve the PS1.

PS1Digital HDMI video output/upscaler – allows playing PS1 games on modern televisions over HDMI using an FPGA based digital to digital video upscaler.

PSIO optical disc emulator (ODE) – allows loading PS1 games from an SD card (plugs into the rear parallel port and can be used along with the built in disc drive).

The original PlayStation was one of the first consoles to have a modchip available for it. This was primarily due to the rise of cheap CD burners and blank discs that allowed game backups to be easily produced. That and the rising popularity of downloadable game backups online.

PlayStation 1 modchips were produced as early as 1996, not very long after the console was first released. These early mod chips were very expensive, but over time they were reverse engineered, cloned, and sold prices fell as a result. The original chips used the PIC16C54 microcontroller.

In 1997 a new modchip was released called “Old Crow”. This new modchip was another clone of the original modchip, but the source code was released to the public, reducing the cost of the chip even further. “Old Crow” was originally made for the Zilog Z8 microcontroller, but versions were released for the PIC16C54, and PIC16C84 as well.

Later in 1997 the “Old Crow” code was ported to the then new PIC12C508 microcontroller, which is still being used for modchips today. The new chip dropped the modchip prices to the price range they are still sold at today.

All three are based off of the PIC12C508, but there are ports that allow the code to run on other chips like the PIC12F629. These chips are based on the “Old Crow” code with additional features like support for anti modchip games.

ONEchip modchips are designed specifically for PAL region PSone’s, and don’t work with anything else. They were designed to bypass additional protection inside the SCPH-102.

If you want to learn more about how a PS1 modchip works, I recommend taking a look at the PsNee project on Github. The project is the modchip code for Atmel processors. The code is well documented and explains how everything works.

If you own a Japanese PS1, version SCPH-3000 or later (some SCPH-3000’s are immune), and install a modchip into it, you may run into a problem when you try to load an American or PAL game. This is because starting with some SCPH-3000 PS1’s Sony added an additional region lock to the BIOS of the system.

The first way is to replace the BIOS chip inside the Japanese PS1 with an American BIOS chip. Ideally you’d find one from the same model, for example if you have a SCPH-7500 you’d replace it with a SCPH-7501 BIOS chip. BIOS chips from other American models should work as well, but if you can get the same model there is less risk involved. This method requires a hot air rework station.

The second way is to replace the whole board inside your Japanese system with an American board. For example if you have a SCPH-7500 you’d put a motherboard out of a SCPH-7501 inside. This method would make your console appear to be Japanese from the outside, but it would really just be an American system.

In North America we have NTSC-U/C consoles and TV’s, and in Japan there are NTSC-J consoles and TV’s. Meanwhile Europe and some other parts of the world there are PAL consoles and TV’s. In the case of the PlayStation 1 the modchip can be used to unlock the console’s ability to output video for any region based on the game being played.

This is a question there is no perfect answer for. Each chip has its own pros and cons, and at this point in time there is no perfect chip that works 100% of the time with every PlayStation 1. I plan to do an experiment at some point in the future where I look more into the boot success rate of popular chips.

If you have a PAL SCPH-102 PSone then you need to either use a ONEchip, or an ATmega based PsNee (make sure whoever is selling it has enabled PAL PSone BIOS patching in the firmware as well). You really can’t go wrong with either chip, just go with whatever is the easiest or cheapest to find.

If you have an older system, like a PU-7 or PU-8 SCPH-100x console, then you have a few options. One choice is the MM3 modchip, but from my experience they don’t support full stealth mode with PU-7 boards, and aren’t always the most reliable with every PU-8 board either. Stealth 2.8a chips are also available and work with PU-7 and PU-8 boards. What I would recommend is using a PsNee (either ATtiny or ATmega). I have confirmed that stealth mode works with the PU-7, and haven’t ran into any reliability issues when booting games.

In general MM3 modchips are very popular and should at least partially function with every version of the PS1. Make sure you install at least seven wires if you want to be able to play anti modchip games.

Mayumi v4 modchips are also popular and should at least partially function with every version of the PS1 (except SCPH-100x). These chips require eight wires to be installed. They can be more reliable than MM3 chips in many cases because they are triggered using the PS1’s internal clock and not the clock inside the PIC chip itself.

This is the traditional approach. The PIC12C508A is an older chip that’s harder (and more expensive) to find a programmer for, and will reach end of production in the near future.

This is an alternative approach. The PIC12F629 is a newer chip  that’s easier (and cheaper) to find a programmer for, and will continue to be produced for a longer than the PIC12C508A.

I’m not quite sure what modchip that is. The 12C508 chip was used for many different types of modchips (you can look at my MM3 diagrams for pin numbers on that chip). Pin 1 is power (has a wire attached in your picture), and pin 8 is ground (isn’t connected to anything in your picture). If you could send me a picture of the board as a whole where I can see where both of those wires are connected that would be useful.

The closest match from all of the diagrams I have is a Mayumi v4 (none of the other diagrams I have show pin 2 connecting to that location). https://quade.co/ps1-modchip-guide/mayumi-v4/pm-41-2/ Of course that doesn’t match up with pin 4, or how there aren’t any other wires. You could try different combinations of the points in that Mayumi v4 diagram (a lot of those points are common among different modchips). Leave pin 1 and pin 2 as is, and connect pin 8 to any grounding point. Then you can try different combinations of the other 5 pins (including leaving pins disconnected). You…Read more »

As best as I can tell it is 121(maybe an F)50BT 1905 6AV. Sorry that is all I am able to get from it. Saw your ebay store and ordered one before noticing you had a store on here lol.

If you remove the chip and it still has issues that means something was damaged on the PS1 board. Maybe a blown fuse, maybe an accidental short from some solder bridging. If it does work after removing the chip then it may be an issue with the installation of the chip, or the chip itself.

Hi folks, I have a question regarding where the chip is located in the PS1 and if ordering the part to replace the laser would affect my PS1 being able to read burnt games. I recently found my old PS1 from when I was a boy, along with a heap of old burnt/pirated games. I remember it was modded, so it was able to read the discs without a problem. I have replaced the spindle as that was broken. Now when I put in a disc, it runs me through the Sony orange diamond screen and then brings up the…Read more »

The chip is located on the PS1 main board itself, the laser assembly is completely separate. Assuming everything else with the console is still good you’d be able to play the burnt discs with a working laser.

Hi William, do u mind looking at this board. my chipped PS1 is nolonger loading copies of games. It loads the original but not the copy anymore. Thinking it might be a hardware issue.

Hello William, my Playstation Model is SCPH-7502 PAL (PU-22). I installed mm3 chip as directed, but after installing even original PS1 discs are not working – Its shows please insert original PS CD-ROM. What to do next? Appreciate your help on this. Thank you

Hey, thank you for your reply. I tried as you directed, again did all the connections from the scratch and wires also aren’t super long, but again am ending up on Music player screen for original play station discs and insert original Play Station CD-ROM screen for back-ups. One thing I noticed, when I removed all the connections of mod chip then original discs are again working fine. Any suggestions on this?

Hi Im just curious does the modchip have any negative effects on the life span on the console. i remember as kinds we had 2 or 3 ps1 units that were all chipped an didnt seem to last more than a year or 2 before crapping out on us. also if you could advice me which chip you would recommend for a PAL (australian) SCPH9002 unit

The PIC12C508/509 pin layouts diagram/picture/schematics you give for each different mother boards, are these the exact same pin layout for the PIC12F629 chips?

I’ve just finished programming my PIC12F629 chips and I’m about to soldier them into my boards. So I’m wanting to be 100% sure the diagrams you have listed here work for these 12F629 chips also.

I mod a LOT of these PS1 phats, i find a few old crow 4 wires in them but today I found inside a broken (which i’ve fixed) SCPH9002 / PU23 a 3 wire chip with one link wire – what surprised me was it ran both dino crisis and resident evil 3 without a problem. Are there any other games that had a more updated way to detect a modchip? I pulled the chip out of the console (re-attached all 8 legs to dump) and it’s a Multimod V1.4 (not a multimode, a multi-mod) It seems to inject scee…Read more »

Sony Playstation PSone PS1 LCD Screen Only Tested and Working SCPH-131 #1A. Sony Playstation PSone PS1 LCD Screen Only Tested and Working SCPH-131 Missing Speaker Covers/ Screws - FAST & FREE SHIPPING!!! Screen has been tested & working on a Sony PSone system. Everything works great but is missing the speaker covers and screws (see pictures). No other cords or anything else included. Please look at all pictures for item condition (example: s cratches, scuffs, stains, marks, paint wear, writing, dents) Ask all questions prior to purchase. TERMS OF SERVICE Payment: Payment is due via PayPal within 2 days. Return Policy: Approved returns will have the shipping cost deducted prior to refund. Shipping Information for International Customers : We ship all international orders via eBay’s Global Shipping program.

Condition: Used, Condition: Screen has been tested and working on a sony PSone system. Everything works great with no issues but is missing the speaker covers and screws (see pictures). No other cords or anything else included., Brand: Sony, Model: SCPH- 131, MPN: LCD