---
title: "RAM Decoding for ZX81"
type: "article"
slug: "ram-decoding-for-zx81"
url: "http://localhost/article/ram-decoding-for-zx81/"
markdown_url: "http://localhost/article/ram-decoding-for-zx81.md"
published_at: "2024-01-01T16:17:48+00:00"
modified_at: "2024-06-23T01:03:37+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Last March we published Al Salt's plans for adding external RAM to ZX80s. To adapt his Build Additional RAM (SYNTAX 02/03/02) with ZX81s, you can take ne of three approaches. The second two of these plans do not require you to modify the insides of your ZX81."
category:
  - name: "Syntax"
    slug: "syntax"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/syntax/"
post_tag:
  - name: "1982"
    slug: "year-1982"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1982/"
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Sinclair ZX81"
    slug: "zx81"
    taxonomy: "model"
    url: "http://localhost/model/zx81/"
publication_r:
  id: 10246
  title: "Syntax"
  type: "periodical"
  url: "http://localhost/periodical/syntax/"
volume: "3"
issue: "2"
issues_articles:
  - id: 52471
    title: "Syntax/Syntax ZX80 v3 n2"
    type: "issue"
    url: "http://localhost/issue/syntax-syntax-zx80-v3-n2/"
pages: "12"
pubdate: "February 1982"
related_articles:
  - id: 19680
    title: "Build Additional RAM"
    type: "article"
    url: "http://localhost/article/build-additional-ram/"
archive_link: false
---

# RAM Decoding for ZX81

Last March we published [Al Salt’s](http://localhost/indiv/alger-salt/) plans for adding external RAM to ZX80s. To adapt his [Build Additional RAM](http://localhost/article/build-additional-ram/) (SYNTAX 02/03/02) with ZX81s, you can take ne of three approaches. The second two of these plans do not require you to modify the insides of your ZX81.