TweetFollow Us on Twitter

Net Yaroze on the Mac OS

Volume Number: 13 (1997)
Issue Number: 12
Column Tag: Alternative Environments

Net Yaroze on the Macintosh OS

by Ed Ringel, with Jeremy Vineyard

Is game console development for you? MacTech takes a lightning tour of Net Yaroze on the Mac OS

Introduction

Most of us like to play games, and some of us would also like to write our own. Besides desktop computers, there are console systems on the market specifically designed for playing games. Nintendo, Sega, Sony, and Atari are just a few manufacturers of these systems. Until recently, game console game development has been the exclusive domain of commercial developers. Presumably, in this way only the best quality games will be created for their systems, and will thus most effectively promote their product. Sony has created a different option, a way for hobbyists to create games for the Sony PlayStation, without participating in the professional developers program. This program is called "Net Yaroze," pronounced Yah-RO-zay.

Net Yaroze

What it is

Net Yaroze is Sony's development package that gives hobbyist developers access to the PlayStation OS. Net Yaroze comes with a Net Yaroze member's PlayStation, a special Net Yaroze access card, a boot CD for the PlayStation, a software development CD containing sample code and libraries, and paper documentation. Net Yaroze is also referred to as Yaroze. Hobbyists can subscribe to the Yaroze program for approximately $750 by contacting Sony.

What it needs

The Net Yaroze member's PlayStation is a special black PlayStation with an added port in the back for connecting to a PC. In addition to development, the Yaroze member's PlayStation can play any PlayStation game. The Net Yaroze developer kit was designed for IBM compatibles, so it uses a connection that is not directly compatible with any of the Mac I/O ports. To connect a Mac to Net Yaroze, you need a DB-9 adapter cable, also known as a modem cable (around $ 5-10). [Note that the connection is DB-9, not DB-25. --Ed.] CodeWarrior for PlayStation does not come with Net Yaroze and must be purchased separately for around $300.

The Net Yaroze development system uses a serial port, so if both a printer and a modem are already hooked up to the Mac, a serial port switch box or PortJuggler may be an excellent investment. These devices range in price from $20 to $130 depending on their capabilities.

To debug (and play) Net Yaroze games some sort of video system is necessary. Generally, this means an external monitor, an RCA video input (AV Mac's), or a TV/video capture card. There is no "right" decision here. I have been using TurboTV- a cross-platform PCI TV card for either Mac or PC, but I was disappointed by the extra compatibility problems introduced when I installed the card. It can make the computer somewhat unstable, and virtual memory must be off for systems before 7.6. Unless you already have video input capabilities in your Mac, an extra cheap television may actually be a better purchase than a TV card. A "real" TV has the advantage of showing what the images will really to look like, but the computer screen TV image is dithered and interlaced, even in millions of colors. Also, TV cards are convenient and make it easy to capture screenshots and QuickTime movies of your games. Why the extra TV? Although most people already have a television at their disposal, they may not be willing to dedicate it solely to the purpose of debugging and playing Yaroze games.

What it isn't

Net Yaroze is very different from commercial PlayStation development. The vision of Sony in creating this program is that of a worldwide group of talented, programming hobbyists developing games to play and share amongst themselves, connected by the Internet under the help, care, and guidance of Sony. This is not a low end, alternative entry point into commercial programming, but a hobbyist's club with many safeguards (or obstacles, depending upon how you see it) to prevent the dissemination of hobbyist developed games into the protected, quality controlled end user market.

Net Yaroze games will run only on Net Yaroze consoles; they will not run on commercial PlayStations. Obviously, this is Sony's main firewall between the Net Yaroze and commercial development programs. Conversely, commercial games will happily run on Yaroze units. In fact, one perk of being a Yarozian is that any commercial game for any of the target markets will run on a Net Yaroze box; there is no geographical lockout as with commercial games units. (PlayStations marketed for North America, for example, will only run games marketed for North America.)

Another difference is that the code libraries provided are a subset of the commercial development libraries. Also among the main differences is a ceiling on code size for Net Yaroze development. The licensing program, although reasonable, appears to be no nonsense in character and would probably not be tolerant of efforts to breach the hobbyist/commercial separation. The reader is recommended to the web sites mentioned at the end of the article for some excellent FAQ pages that help delineate the specifics of the program.

Thus, although PlayStation development may hold considerable interest for the hobbyist game developer, the up-front cost may be substantial. Furthermore, there may be several hassle factors: loss of a port, Mac OS specific costs, and the pros and cons of various video output solutions.

Learning To Program for Net Yaroze

The Net Yaroze package comes with three manuals: a startup guide that shows you how to set up the Net Yaroze and run sample programs (for IBM PC's); a user guide that explains the various components of the PlayStation OS; and a library reference manual that contains descriptions of library functions that can be accessed when writing Yaroze software.

The manuals are thorough, but they describe a complex environment. PlayStation game developers must deal with most of the same problems as do game developers for PC's; game console development is far from easy. Proficiency in C or C++ is required to be able to understand the documentation and sample code. C is strongly recommended as the development language by Sony. C++ is not officially supported, although can be used.

Net Yaroze has its own web site specifically designed for Net Yaroze developers. This web site contains sample programs written by other Net Yaroze users or by Sony, documentation concerning PlayStation data formats, and other useful information concerning Net Yaroze development. The web site also contains utility programs for Net Yaroze developers, but for now they are mostly only for IBM PC's.

Net Yaroze on Macintosh

Setting up the system

To set up Net Yaroze for Macintosh, the prospective developer needs to follow a few simple steps. First, insert the Net Yaroze access card into the PlayStation. Next, connect the PlayStation to the Macintosh serial port using the DB-9 adapter cable. Then, install CodeWarrior for PlayStation and the supporting Yaroze libraries. Finally, boot the PlayStation with the Net Yaroze boot CD. After following these steps, programs and data files can be downloaded to the PlayStation. Let's take a moment to look at the Mac OS specific development system, CodeWarrior for PlayStation.

CodeWarrior for PlayStation

CodeWarrior for PlayStation is a plugin for the CodeWarrior IDE environment. By maintaining a standard interface, developers familiar with the CodeWarrior IDE will have little trouble writing code for the PlayStation. The CodeWarrior for PlayStation package includes the IDE and plugin for both Mac and Windows platforms along with on-line documentation explaining how to target the PlayStation platform. It also includes a tool for converting graphics to TIM, the PlayStation graphics format, and one sample program for Net Yaroze.

CodeWarrior for PlayStation is still in its early DR stages, so developers should be cautious when considering a purchase of this product. The environment itself is stable, but the tools are sparse and not very well developed at this point. Fortunately, Metrowerks is working on improving tools for PlayStation development.

Currently, it is impossible to run many of the sample programs that are posted on the Net Yaroze web pages because source code is not available, but Metrowerks plans to fix this shortcoming in the near future.

PlayStation technical support was variable. I posted several technical questions on comp.sys.mac.programmer.codewarrior and had replies from several

people that same day. An e-mail to tech support however, received no response.

Let's Write Some Games!

To write games for the PlayStation, a developer must understand the PlayStation OS and libraries which are described in the reference manuals included along with the Net Yaroze environment. The developer must then convert any graphics or sound data to the appropriate PlayStation data formats using the tools provided with CodeWarrior for PlayStation. Conversion tools can also be found on the web. After the PlayStation code has been written in C or C++, it can be compiled into a PlayStation executable file which is then opened into the Metrowerks debugger (the release that comes with CodeWarrior for PlayStation must be used). Once a PlayStation file is opened in the debugger, it can be downloaded to the PlayStation. At this point, you will be playing your very own, custom-made PlayStation game! Now, let's stamp out the bugs.

Figure 1. Net Yaroze Sample Program.

Debugging PlayStation Games

Cross platform development can tax even high end host computers. Environment limits are especially noticeable during the Net Yaroze debugging process. Because the debugger must communicate with the PlayStation through a serial cable, the debugging process, even at its fastest terminal speed, can be painful. Stepping through in the debugger is slow even on a 200 MHz Mac. It is not possible to switch programs after one has started running. Instead, the PlayStation must be reset manually every time a new program is to be run or the same program is to be rerun. This is particularly inefficient and slow because of Sony's startup advertisements. Metrowerks plans to fix this in an upcoming release.

Perhaps the most serious problem with the debugging process is that breakpoints cannot be set or edited while the PlayStation program is running. The implications of this are that developers must decide exactly where they want their breakpoints before starting debugging, something that is difficult to do with larger projects. According to Metrowerks, this is a hardware limitation and cannot be fixed.

Summary

Net Yaroze provides hobbyists with the opportunity to write authentic console games. Until now, that has been difficult to accomplish. Metrowerks is currently working on new tools that will make Macintosh Net Yaroze development much easier in the near future. The would-be console game programmer should be aware of the limitations of the system, the steep learning curve, and the costs involved. Nonetheless, Net Yaroze development might be a new and satisfying undertaking for the hobbyist, and give the would-be professional a chance to test the waters.

Products Reviewed

Net Yaroze, Sony Corporation. See URL's for contact information. CodeWarrior for PlayStation/Net Yaroze. See URL's for contact information.

Useful URL's

http://www.scea.sony.com/net/index.html is Sony's home page for Net Yaroze information. The interested reader is strongly recommended to this page. In particular, the FAQ page can really help you make a decision regarding purchase.

http://www.Metrowerks.com/products/cw/playstation/cwps/index.html and http://www.Metrowerks.com/products/cw/playstation/netyaroze/index.html are two pages are Metrowerks index pages into CodeWarrior for PlayStation and CodeWarrior for Net Yaroze. Again, the interested reader is vigorously recommended to these pages. Both the Sony and Metrowerks pages have links to related sites, email contacts, registration forms, etc.


Ed Ringel, eringel@mint.net, is Contributing Editor for product reviews for MacTech Magazine. In his spare time, he is a respiratory and critical care physician in Waterville, Maine.

Jeremy Vineyard, jeremyv@screenplay.com, is a software engineer at Screenplay Systems. His interests include developing games, software utilities, and application class libraries.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Luminar 1.2.1 - Powerful, adaptive, conf...
Luminar is the new full-featured image editor that adapts to the way you edit photos. Over 300 essential tools to fix, edit, and enhance your photos with comfort. The future of photo editing is here... Read more
1Password 6.8.1 - Powerful password mana...
1Password is a password manager that uniquely brings you both security and convenience. It is the only program that provides anti-phishing protection and goes beyond password management by adding Web... Read more
EtreCheck 3.4.4 - For troubleshooting yo...
EtreCheck is an app that displays the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to... Read more
GarageSale 7.0.8 - Create outstanding eB...
GarageSale is a slick, full-featured client application for the eBay online auction system. Create and manage your auctions with ease. With GarageSale, you can create, edit, track, and manage... Read more
Backblaze 5.0.0.116 - Online backup serv...
Backblaze is an online backup service designed from the ground-up for the Mac. With unlimited storage available for $5 per month, as well as a free 15-day trial, peace of mind is within reach with... Read more
Parallels Desktop 13.0.0 - Run Windows a...
Parallels allows you to run Windows and Mac applications side by side. Choose your view to make Windows invisible while still using its applications, or keep the familiar Windows background and... Read more
Mellel 4.0.0 - The word processor for sc...
Mellel is the leading word processor for OS X and has been widely considered the industry standard for long form documents since its inception. Mellel focuses on writers and scholars for technical... Read more
Adobe Muse CC 2017 2017.1.0 - Design and...
Muse CC 2017 is available as part of Adobe Creative Cloud for as little as $14.99/month (or $9.99/month if you're a previous Muse customer). Adobe Muse 2017 enables designers to create websites as... Read more
WhatsApp 0.2.5862 - Desktop client for W...
WhatsApp is the desktop client for WhatsApp Messenger, a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for... Read more
WhatsApp 0.2.5862 - Desktop client for W...
WhatsApp is the desktop client for WhatsApp Messenger, a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for... Read more

The best deals on the App Store this wee...
The summer is drawing quickly to a close, but luckily there's a game for every season. It's an excellent week for some bargain shopping if that's what you're after. There are some big names and indie darlings in this week's roundup. It's a great... | Read more »
KORG iMono/Poly (Music)
KORG iMono/Poly 1.0.0 Device: iOS Universal Category: Music Price: $19.99, Version: 1.0.0 (iTunes) Description: *** Special Sale for a limited time to celebrate the debut of KORG iMono/Poly (33% OFF) until Sep 30! *** Reviving a... | Read more »
Super Phantom Cat 2 beginner's guid...
Super Phantom Cat 2 presents a whole new world of fun platforming challenges and perplexing puzzles. It's a well-designed platformer with a bright, neon aesthetic that brings the genre up to date. [Read more] | Read more »
Shadow Fight 2 Special Edition (Games)
Shadow Fight 2 Special Edition 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: ** New story chapter! **** No Ads! **** No energy! ** The best fighting series on mobile has returned and... | Read more »
4 RPGs like Final Fantasy XV that deserv...
Square Enix announced another Final Fantasy XV spin-off today - Final Fantasy XV Pocket Edition. This mobile, episodic version of the hit RPG gives the game a chibi-fied makeover. The first episode will be free, followed by 9 more premium episodes... | Read more »
Guild sieges and soul gems in latest upd...
Webzen’s MU Origin hit app stores last year, giving fans of fantasy hack-n-slash MMOs like Diablo a new fix to fixate on. This latest update introduces a competitive guild battle, a fresh dungeon challenge, a mini-game and some elemental gems to... | Read more »
Little Red Lie (Games)
Little Red Lie 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: ARE YOU MORE AFRAID OF POVERTY THAN DEATH? Little Red Lie is a narrative-focused, interactive fiction experience that reduces... | Read more »
You can now apply to be Clash of Clans...
Earlier this month, word got out that the Builder, the trusty handiman who tirelessly built every single building inevery singleClash of Clansbase had called it quits. Sick of seeing his work destroyed endless, the Builder has set out for our world... | Read more »
Meshi Quest beginner's guide - how...
Meshi Quest is Square Enix's newest free-to-play release, and it's a real charmer. You start off as the head of a sushi restaurant, upgrading your food and equipment as you serve visitors heaping helpings of your delicious meals. As you progress,... | Read more »
BUST-A-MOVE JOURNEY (Games)
BUST-A-MOVE JOURNEY 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: BUST-A-MOVE Features:- Shoot bubbles and match 3 or more bubbles of the same color to make them pop!- Complete your... | Read more »

Price Scanner via MacPrices.net

Low Cost Subscription Graphics App Alternativ...
I’m not a fan of the subscription software model, I don’t use any subscription apps. Used to be that you paid your license fee and the app was yours to use indefinitely, or until one opted for a paid... Read more
Clearance 2016 13-inch MacBook Airs, Apple re...
Apple has Certified Refurbished 2016 13″ MacBook Airs available starting at $809. An Apple one-year warranty is included with each MacBook, and shipping is free: – 13″ 1.6GHz/8GB/128GB MacBook Air: $... Read more
2017 13-inch MacBook Airs on sale for $100 of...
B&H Photo new 2017 13″ MacBook Airs on sale today for $100 off MSRP, starting at $899: – 13″ 1.8GHz/128GB MacBook Air (MQD32LL/A): $899, $100 off MSRP – 13″ 1.8GHz/256GB MacBook Air (MQD42LL/A... Read more
Sale! 13-inch 2.3GHz MacBook Pros for $100 of...
B&H Photo has 13″ 2.3GHz MacBook Pros in stock today and on sale for $100 off MSRP including free shipping plus NY & NJ sales tax only: – 13-inch 2.3GHz/128GB Space Gray MacBook Pro (MPXQ2LL... Read more
2016 MacBook Pros, Apple refurbished, availab...
Apple has Certified Refurbished 2016 15″ and 13″ MacBook Pros available starting at $1189. An Apple one-year warranty is included with each model, and shipping is free: – 15″ 2.7GHz Touch Bar Space... Read more
Apple offers Certified Refurbished iPhone 6s...
Apple has Certified Refurbished unlocked iPhone 6s’s and 6s Plus’s available starting at $449. An Apple one-year warranty is included with each phone, and shipping is free: – 16GB iPhone 6s: $449, $... Read more
Apple offers Certified Refurbished Pencils fo...
Apple has Certified Refurbished Apple Pencils available for $85 including free shipping. Their price is $14 off MSRP, and it’s the lowest price available for a Pencil. Read more
2016 15-inch 2.6GHz Touch Bar MacBook Pro ava...
B&H Photo has clearance 2016 15″ 2.6GHz MacBook Pros in stock today and on sale for $500 off original MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: – 15″ 2.6GHz Touch... Read more
21-inch 2.3GHz iMac on sale for $999, save $1...
Amazon has the new 2017 21″ 2.3GHz iMac (MMQA2LL/A) in stock and on sale for $999.99 including free shipping. Their price is $100 off MSRP, and it’s the lowest price available for this model. Read more
Free Instant Translator 2.0 App For iOS Relea...
Mobile application development company, Neoappz has announced the release and immediate availability of Instant Translator 2.0 for iOS devices. Instant Translator is a user-friendly application which... Read more

Jobs Board

*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.