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Atarimax Ultimate SD Multi-Cart for Atari 5200


The Atari 5200 Ultimate SD cartridge is an SD card based multi-cart for your Atari 5200 game system.

The Ultimate SD is the most advanced cartridge ever produced for the Atari 5200 and includes a 50 MIPS onboard CPU, advanced upgradable hardware logic, 1024KB of SRAM and 512KB of block flash.

The Ultimate SD Cartridge supports the following Atari 5200 ROM formats:

  • All standard 32K or less ROM images.
  • All bank-switched ROM images including Bounty Bob Strikes Back!
  • MEGA-CART Bank-switched ROM images up to 1024KB (M.U.L.E, etc)
  • New modes including the Hybrid 1024KB full Read/Write 8k/8k Bank-switching mode

The bank switching logic, CPU firmware, boot flash and menu software are all 100% field upgradable by just placing new files on the SD card and turning on the system!

The Ultimate SD kit includes the following:

  • Atarimax Ultimate SD Cartridge for Atari 5200 with Quick Reset Button
  • Surprise BONUS 5200 Homebrew! (See Below)
  • Surprise BONUS Three NEW 5200 Conversion Titles! (See Below)
  • SD Card (Pre-Orders shipping with 4GB SDHC Cards)
  • Menu Software (Pre-loaded and ready to use on SD Card)
  • Free Firmware Upgrades and Technical Support
  • Real Lifetime Warranty

Surprise Homebrew Bonus!

Beef Drop 5200 Screenshot Beef Drop 5200 Screenshot

I'm happy to announce that in co-operation with Ken Siders, I am providing a very special bonus item to everyone who orders the Atari 5200 Ultimate SD Cartridge.

Everyone who orders will receive an authorized digital edition of the awesome 5200 homebrew Beef Drop!

Beef Drop is Ken's original 5200 homebrew of the arcade favorite Burgertime!

Even if you are a hard core collector and already own the full version of fantastic homebrew, you can now play your fully licensed digital edition on your Ultimate SD cartridge, or even in an emulator.

PLUS New Atari 5200 Conversions!

In the past few years, dedicated 5200 enthusiests including myself have ported many new games to the 5200 from the Atari 8-bit computer line. Because of these efforts, the available software library for the 5200 has more than doubled since 2005!

To celebrate the release of the new Ultimate SD cartridge, I have ported three new Atari 8-bit games to the 5200!

These are included as "unofficial bonuses" and will be announced in the Ultimate SD 5200 Forum, where you will be able to download them for use on your Ultimate SD cartridge!

You will also find links there to download home brews and 5200 conversions done by others, adding even more games to your 5200 library.

Please note: No unlicensed ROM images are included with these products. Any commercial product names seen on product demonstration videos are for demonstration purposes only and are not included with this product.

All users are encouraged to respect homebrew authors copyrights and terms of use accordingly.

Atari 5200 ULTIMATE SD

Atari 5200 Ultimate SD Kit

Atari 5200 Ultimate SD Cartridge Kit w/ Included SD Card

Video of cartridge in use

Play Video

Menu Software Demonstration on a Real Atari 5200!

Worldwide Pre-Ordering

Now Shipping! - Pre-Order Pricing Extended Until 02/29/2024

Click for Photo Worldwide & Domestic Orders - Prices Include Shipping by Air Mail to ALL DESTINATIONS
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Atari 5200 Ultimate SD Cartridge
Includes Ultimate SD Cartridge, Beef Drop Digital Edition Bonus Game and Pre-Configured SD Card!

Atarimax Ultimate SD Atarimax Ultimate SD Atarimax Ultimate SD

1 for $129.95 + $6 Shipping
(free shipping on additional kits)

US orders will be shipped by USPS w/ Delivery Confirmation.

International orders will be shipped by Air Mail unless special arrangements are made.

Add these other Atarimax items with FREE SHIPPING!

Pricing Valid Only with Existing Purchase
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ColecoVision Ultimate SD Cartridge Kit

(Complete kit including Cartridge, SD Card and BONUS CollectorVision Homebrews!)

1 for $129.95 + FREE Shipping

Maxflash USB Programmer Kit

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Maxflash USB Programmer w/ Atari 5200 Cartridge Dumping Adapter

(Optional - Only needed if you want to dump your existing Atari 5200 carts)

$69.99 + FREE Shipping

Maxflash USB Programmer Intellivision Adapter

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Intellivision Dumping Adapter for Maxflash USB Programmer

(Requires Maxflash USB Programmer Seen Above)

1 for $14.99 + FREE Shipping

APE SIO2PC USB Interface

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Atarimax SIO2PC USB Interface (Red/Green LED w/ SIO Jack)

for All Atari Computers

$59.99 + FREE Shipping


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The Ultimate SD Community Forums are now open, click here to enter!

Get the latest firmware or just drop in and chat with other SD cartridge users!

Please note that forum registration is required to post and upload/download files.

Images & Videos


Atari 5200 Ultimate SD Image

Atari 5200 Ultimate SD Cartridge Kit w/ Included SD Card

Video of cartridge in use

Menu Software Demonstration on a Real Atari 5200!

Atari 5200 Ultimate SD Documentation

Chapter 1: Cartridge Overview, Kit Contents and Lifetime Warranty

Chapter 2: FAQ: Comparison between the Ultimate SD and the 128-in-1 USB Cartridge

Chapter 3: Formatting and Preparing a new SD card for use with your Cartridge

Chapter 4: Using the Atari 5200 On-Screen Menu

Chapter 5: Setting Cartridge Options

Chapter 6: Applying Menu Software Upgrades

Chapter 7: Applying Logic, Firmware or Boot ROM Upgrades

Chapter 8: Common Problems and Troubleshooting

Chapter 9: Description of supported Bank-Switching Methods

Chapter 10: C Programming/CPU Access API