---
title: "Side-Scrolling Billboard — 8K"
type: "article"
slug: "side-scrolling-billboard-8k"
url: "http://localhost/article/side-scrolling-billboard-8k/"
markdown_url: "http://localhost/article/side-scrolling-billboard-8k.md"
published_at: "2026-03-13T00:34:27+00:00"
modified_at: "2026-03-13T00:34:28+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Machine code program that scrolls a user-entered message across the screen using 8x8 large characters. Decodes the first 63 characters of the character generator. Requires more than 1K RAM. Includes step-by-step loading instructions and checksum verification (9231)."
category:
  - name: "Syntax"
    slug: "syntax"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/syntax/"
post_tag:
  - name: "Machine language programming"
    slug: "machine-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/machine-language/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "Warren Watson"
    slug: "warren-watson"
    taxonomy: "indiv"
    url: "http://localhost/indiv/warren-watson/"
genre:
  - name: "Graphics"
    slug: "graphics"
    taxonomy: "genre"
    url: "http://localhost/type/graphics/"
publication_r:
  id: 10246
  title: "Syntax"
  type: "periodical"
  url: "http://localhost/periodical/syntax/"
authors_r:
  - name: "Warren Watson"
    slug: "warren-watson"
    taxonomy: "indiv"
    url: "http://localhost/indiv/warren-watson/"
volume: "3"
issue: "4"
issues_articles:
  - id: 52478
    title: "Syntax/Syntax ZX80 v3 n4"
    type: "issue"
    url: "http://localhost/issue/syntax-syntax-zx80-v3-n4/"
pages: "4"
pubdate: "April 1982"
archive_link: false
---

# Side-Scrolling Billboard — 8K

Machine code program that scrolls a user-entered message across the screen using 8×8 large characters. Decodes the first 63 characters of the character generator. Requires more than 1K RAM. Includes step-by-step loading instructions and checksum verification (9231).