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838-32K-X1 Memory Expansion Card

SRAM 32K memory expansion card for the TI-99/4A Expansion box.
$55.00
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838-32K-X1 Memory Expansion Card

Unlock the full potential of your TI-99/4A projects with the 838-32K-X1 Memory Expansion Card. This cutting-edge memory expansion solution is designed to enhance your system's performance by integrating a powerful 32K x 8 SRAM chip. Say goodbye to the hassle of constant memory refreshing, and experience smooth, uninterrupted operation.  Original design by one of the great designers, Thierry Nouspikel, who is the same designed of the original IDE disk controller for the TI-99/4A.

This card brought to realization by Chris Schneider [SHIFT838].

Key Features:

  • 32K x 8 SRAM Chip: Upgrade your system with high-speed, reliable memory that eliminates the need for continuous refreshing.

  • Buffered PE-Box Bus Lines: Following Texas Instruments' recommendations, our card ensures stable and efficient data transfer by buffering the incoming lines from the PE-Box bus.

  • Idle Memory Refresh Circuitry: Our innovative design includes additional circuitry that automatically refreshes memory addresses when the card is idle, ensuring optimal performance at all times.

  • Convenient On/Off Switch: Easily control your memory expansion with the thoughtfully placed on/off switch located at the rear of the card, providing quick access without the need for complex procedures.

  • DC2DC Converter: Use of a 1amp, 5v Output DC-to-DC converter to allow for better heat control.  These converters run cool to the touch, unlike the standard 7805 voltage regulators.

Enhance your retro computing experience with the 838-32K-X1 Memory Expansion Card. Whether you're a hobbyist, developer, or enthusiast, this card is the perfect addition to your setup, offering unparalleled performance and convenience.

This item will be offered in two types of packaging; please choose appropriately.

  1. DIY Board Components - User puts it together - no warranty!
  2. Assembled & Tested - SHIFT838 assembles and test

Manual: Download Here

Please allow 3 business days for build and testing.