---
title: "ZX81 Assembly Instructions"
id: 35743
type: "document"
slug: "zx81-assembly-instructions"
url: "http://localhost/document/zx81-assembly-instructions/"
markdown_url: "http://localhost/document/zx81-assembly-instructions.md"
published_at: "2021-01-12T14:12:56+00:00"
modified_at: "2026-03-15T17:38:06+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "May 1983 three-page internal memo by Louis Galie of Timex Computer Corporation describing the organizational structure of computer engineering, including an org chart."
category:
  - name: "Documentation"
    slug: "documentation"
    taxonomy: "category"
    url: "http://localhost/category/documentation/"
post_tag:
  - name: "Sinclair Research Ltd."
    slug: "sinclair-research-ltd"
    taxonomy: "post_tag"
    url: "http://localhost/tag/sinclair-research-ltd/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
document_url: "https://archive.org/details/TimexSinclairEphemera/Zx81AssemblyManual/mode/2up"
pages: 13
document_date: "1981"
related_content:
  - id: 11292
    title: "Sinclair Research Ltd."
    type: "company"
    url: "http://localhost/company/sinclair-research-ltd/"
  - id: 88
    title: "Sinclair ZX81"
    type: "page"
    url: "http://localhost/computers/sinclair-zx81/"
---

May 1983 three-page internal memo by Louis Galie of Timex Computer Corporation describing the organizational structure of computer engineering, including an org chart.