---
title: "Sinclair ZX81 ROM Disassembly Part A: 0000H-0F54H"
type: "article"
slug: "sinclair-zx81-rom-disassembly-part-a-0000h-0f54h"
url: "http://localhost/article/sinclair-zx81-rom-disassembly-part-a-0000h-0f54h/"
markdown_url: "http://localhost/article/sinclair-zx81-rom-disassembly-part-a-0000h-0f54h.md"
published_at: "2024-01-01T16:26:44+00:00"
modified_at: "2024-06-23T01:03:35+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Ian Logan has disassembled and annotated the ZX81 Monitor, easing your access to the improved 8K ROM."
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: "Book review"
    slug: "book-review"
    taxonomy: "post_tag"
    url: "http://localhost/tag/book-review/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - 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/"
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "Kirtland H. Olson"
    slug: "kirtland-h-olson"
    taxonomy: "indiv"
    url: "http://localhost/indiv/kirtland-h-olson/"
publication_r:
  id: 10246
  title: "Syntax"
  type: "periodical"
  url: "http://localhost/periodical/syntax/"
authors: "Kirtland Olson"
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: "15-16"
pubdate: "February 1982"
archive_link: false
---

Ian Logan has disassembled and annotated the ZX81 Monitor, easing your access to the improved 8K ROM.