Description

Introducing SBMEMTEST — your memory tester for the TI-99/4A!

This isn’t just another RAM test. SBMEMTEST was built to give clear, practical diagnostics:

✅ Multiple test modes – From fast sanity checks to deep retention and March tests, you get the right balance of speed and coverage.

✅ Chip-level diagnostics – The Quick Chip Test pinpoints exactly which chip is failing on your 32K board, giving you a fast path to repairs. (Note: this test is tuned for chips that are fully defective; marginal or partial failures may still pass.)

✅ Precise error reporting – with the march test SBMEMTEST not only shows you that a failure occurred, it also displays the exact failing addresses, making troubleshooting faster and more accurate.

✅ Speech Synthesizer support – Let your TI-99/4A talk you through the test! SBMEMTEST announces which memory bank it’s testing, which pattern is running, and even warns you if errors are found. You can leave it running in the background and hear what’s happening without watching the screen.

✅ Infinite loop mode – Want to stress-test your memory for hours (or days)? SBMEMTEST can run endlessly until you decide to stop it, perfect for catching rare, intermittent errors.

If you’ve ever struggled to isolate flaky RAM chips or wanted a smarter way to monitor tests without being glued to the console, SBMEMTEST is for you.

✨ What you need

• A silver TI-99/4A (will not work on the beige TI-99/4A)
• The TI 32K memory expansion

Note: The cartridge color may vary between black and beige, depending on available stock.

👉 Read the full manual & download here:
https://www.koradyne-systems.com/sbmemtest/