---
title: "ZX81 RAM Test"
type: "article"
slug: "zx81-ram-test"
url: "http://localhost/article/zx81-ram-test/"
markdown_url: "http://localhost/article/zx81-ram-test.md"
published_at: "2026-07-12T23:08:57+00:00"
modified_at: "2026-07-12T23:19:24+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "The short program at the end of this article can be used to test the RAM of you ZX81 type Sinclair computer. It does a quite thorough check of all the RAM installed in your system except for that being used by the program. Of course if the program is running correctly that by itself…"
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  - name: "Alex Burr (K5XY)"
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  - name: "RAM"
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    title: "QZX v10 n8"
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pages: "5"
pubdate: "July 1992"
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---

# ZX81 RAM Test

The short program at the end of this article can be used to test the RAM of you ZX81 type Sinclair computer. It does a quite thorough check of all the RAM installed in your system except for that being used by the program. Of course if the program is running correctly that by itself is a check for that part of your RAM.