838 Designs

After purchase email .PNG file along with text that is required to be on coaster to: click to email requirements

Introducing a new vintage charm for your desk ensemble – the Custom Engraved Slate Drink Coaster. Crafted with meticulous attention to detail, this coaster seamlessly merges retro aesthetics with practical functionality, serving as the perfect companion to your cherished retro computers.

Each coaster is meticulously handcrafted from high-quality slate, chosen for its durability and timeless elegance. The smooth surface of the slate provides the ideal canvas for customization, allowing you to imprint your chosen design with precision and clarity.

The retro flair comes to life with the engraved design meticulously etched into the slate surface. Imagine intricate patterns reminiscent of classic computer circuitry, or perhaps the iconic logos of vintage tech brands that evoke nostalgia with every glance. Whether it's a pixelated rendition of your favorite retro game character or a homage to classic computing icons, the engraving is tailored to your unique preferences, adding a personal touch to your workspace.

Not only does this coaster serve as a stylish accent piece, but it also fulfills its primary function with excellence. The natural properties of slate ensure that your desk remains protected from unsightly water rings and spills, while also providing a stable base for your beverage of choice.

Adding the Custom Engraved Slate Drink Coaster to your desk is more than just a practical decision; it's a statement of your appreciation for the timeless allure of retro technology. Let it be a conversation starter, a nod to the bygone era of computing innovation, and a reminder of the enduring charm of the classics. Enhance your workspace with this exquisite coaster and elevate your retro computing experience to new heights.

Product Description

• Support for 2 physical IDE devices (Primary and Slave)
• Each device can have 4 partitions of 260mb each.
• Support for standard 40-pin IDE connector
• Support for Standard 44-pin IDE connector
  • 44-pin has power and ground already wired into the connector.
• 5v power and Ground via (This can be used to power a IDE2CF Card or IDE2SD Card)
  • 2-pin header
  • 4-pin 3.5 type Molex connector
• DC/DC 5v converter replaced standard LM7805 voltage regulator
  • This upgrade allows the card to run substantially cooler, an average of 40-50 degrees Fahrenheit cooler than the standard 1.5amp LM7805 with heatsink.
• Can use an existing 5v 838-RTC Module or original BQ4847 RTC.

• Assembled and Tested - includes a complete board assembled and tested (buyer must choose IC socket type and clock module type during the purchase process).

• Standard Dual-Wipe (which are spring or pressure type sockets for IC's)
• Machined Round Sockets

• 838-RTC Module IF AVAILABLE (Includes an assembled/tested 838-RTC with CR2032 installed)
• Original BQ4847 (IF AVAILABLE) by Texas Instruments or other manufacturers - Internal battery has passed voltage test.

• Single CF Card Adapter currently, plugs directly into the 40-pin IDE connector, does require power to be supplied by a Molex power cable (purchased as an option) or a standard 2 pin jumper wires.  This adapter will give IDE1-4 with each partition being 260mb.
• Dual CF Card Adapter.  This adapter plugs directly into the 40 pin IDE connector, requires power supply by the Molex power cable (purchased as an option) or a standard 2 pin jumper wires.  This adapter will give IDE1-4 on the Primary CF Card and IDE5-8 on the Slave CF Card, each partition being 260mb.

• Female to Female 4-pin Molex (only 5v and Ground is connected) - This power cable will connect directly to a device that supports a 3.5 standard type of Molex connector.  Note - this power only supports 5v and is perfect for the CF Card adapter or SD Card Adapter.

• Bare Boards only (you source the parts)
• DIY KIT (Bare Boards components - you build it)
• Assembled/Tested - assembled and tested before being shipped

• TI-99/4A
• 32K CARD
• FDC
• TIPI
• 838-Speech

• 3D cases are not included but can be added to order. Please allow an extra day to print
• Cable NOT included, must be ordered from (iec.net) as I no longer make the cable.  These can be ordered in 3, 4 and 5 foot lengths.  You can call them to order at (303)288-5000 and give them one of the below part numbers below:
  • L1177-03  (3 FOOT)
  • L1177-04  (4 FOOT)
  • L1177-05  (5 FOOT)
• 32K expansion module NOT included must be added as option.

• L1177-03 (3 Foot Cable)
• L1177-04 (4 Foot Cable)
• L1177-05 (5 Foot Cable)

Introducing the SHIFT838 99/22 USB Keyboard Adapter: Unlock Modern Convenience for Your Classic System

Please allow 3 business days for build and testing before shipping.

Are you a proud owner of the new 99/22 TI-99/4A clone computer? Love the nostalgia but wish you could type on a more familiar keyboard? Look no further! The SHIFT838 99/22 USB Keyboard Adapter bridges the gap between retro computing and modern convenience.

Key Features:

1. Plug-and-Play Compatibility:

   • Simply connect your favorite standard PC USB keyboard to the SHIFT838 adapter.
   • No drivers, no fuss—just seamless compatibility.
   • Connect the standard 99/22 Keyboard at the same time using the keyboard expansion header on the SHIFT838 99/22 USB Keyboard Adapter.  Just use standard dupont female to female jumper wires (not included).

2. Compact Form Factor:

   • Designed with your 99/22 in mind, the USB adapter sits directly over the mainboard by plugging directly into your vertical keyboard header.
   • No bulky add-ons or messy cables—just a sleek, unobtrusive solution.

3. Full-Size Keyboard Experience:

   • Say goodbye to those tiny, rubbery keys. With the SHIFT838 99/22 USB Keyboard Adapter, you get the full tactile experience of a standard PC keyboard.
   • Type faster, type better, and relive the golden age of computing.

4. Built to Last:

   • Crafted with quality components, the SHIFT838 99/22 USB Keyboard Adapter is robust and reliable.
   • It’s a one-time investment that enhances your 99/22 experience for years to come.

Compatibility:

• No need to sacrifice functionality—type comfortably and efficiently.

Upgrade Your 99/22 Today:

• Whether you’re coding, gaming, or just reminiscing, the SHIFT838 99/22 USB Keyboard Adapter brings modern ease to your vintage setup.
• Rediscover the joy of typing on a familiar keyboard without compromising the essence of your beloved system.

Introducing the SHIFT838 GROM Extender, a must-have accessory for the 99/22.  This product will also work the TI-99/4 and TI-99/4A home computers.  This product is a blank printed circuit board (PCB) designed to extend the cartridge port for your 99/22 setup.

This product addresses the issue in the current 99/22 v0.96 board of the cartridge not plugging in all the way when U18 is socketed.

Buyer will need to source their own card edge connector for use.  Suggest the straddle connector made by Sullins connectors.

Introducing the 838 99/22 IO Port Extender, a must-have accessory for the 99/22. 

This PCB will plug into the internal IO Port header (J12 on V0.96 PCB) and produce an edge card connector allowing side port IO peripherals like a TI Speech Synthesizer, side port TIPI/32k Combo card or any other side port peripheral device to plug directly into this header. 

This PCB will lift the device with enough clearance to hang over the ICs on the 99/22 mainboard.  Allowing for less devices to be plugged into the external IO Port edge connector.  The extended raised female header has gold contacts as well to ensure the best connection.

Only sold assembled.

See photos of the board installed in my personal 99/22.

Introducing the 838 Unicorn PCB, a must-have accessory for the 99/22.  This is the GROM simulator PCB that has been redesigned to a smaller footprint and allows the board to be directly plugged into the Unicorn port (header J4) vertically.  This new design allows for the 838-Unicorn board to sit directly over the 99/22 mainboard.  This board gives no added functionality from the original, it is just a design change.

This is only the blank PCB; options can be added when adding to cart.

Please be aware if choosing to assemble you will need the board programmed with one of the GROM loads offered.  If anything, other than Standard TI GROMs is programmed to the Unicorn then the 99/22 will require the additional EPROM that can be added to the package, or you can program one yourself. 

If you want to run extended basic from the onboard cartridge EPROM then the GROMS required with be the Extended Basic version you want.  The EPROM must match the GROMs loaded, or it will not work.

Please select appropriately.

TI-99/4A Console Tester originally designed by Geoff Trott is back and ready for a pre-purchase.

This is for the PROTOTYPE board.  There is only one error on the board, and it is a value of a capacitor, no trace errors.

The TI-99/4A Console Tester is a game-changer for anyone with a TI-99/4A system. Designed to plug into the side of your console, this handy unit runs an isolated diagnostic program stored on an EPROM, streamlining the process of identifying and fixing faults in your TI-99/4A.

With its comprehensive testing capabilities, this console tester can diagnose issues with key components including RAM, ROMs, GROMs, and the VDP, among other vital parts. Say goodbye to the frustration of spending countless hours diagnosing a failed console—the TI-99/4A Console Tester saves you time and effort by providing precise diagnostics quickly and efficiently.

Make console troubleshooting a breeze with the TI-99/4A Console Tester and get back to enjoying your classic games and computing in no time!

Download the manual HERE

TI-99/4A Console Tester originally designed by Geoff Trott is back and ready for a pre-purchase.

This pre-order will be online until 11/24/2024 12:00 (NOON) CST. 

Components and PCBs will not be ordered until after the pre-order closes. 

Note: Picture shown is of the prototype board.  You will not get the prototype.

The TI-99/4A Console Tester is a game-changer for anyone with a TI-99/4A system. Designed to plug into the side of your console, this handy unit runs an isolated diagnostic program stored on an EPROM, streamlining the process of identifying and fixing faults in your TI-99/4A.

With its comprehensive testing capabilities, this console tester can diagnose issues with key components including RAM, ROMs, GROMs, and the VDP, among other vital parts. Say goodbye to the frustration of spending countless hours diagnosing a failed console—the TI-99/4A Console Tester saves you time and effort by providing precise diagnostics quickly and efficiently.

Make console troubleshooting a breeze with the TI-99/4A Console Tester and get back to enjoying your classic games and computing in no time!

Download the manual HERE