---
title: "Grandson of Big Characters"
type: "article"
slug: "grandson-of-big-characters"
url: "http://localhost/article/grandson-of-big-characters/"
markdown_url: "http://localhost/article/grandson-of-big-characters.md"
published_at: "2026-03-13T00:22:58+00:00"
modified_at: "2026-03-13T00:22:58+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Update of John Filley's 'Son of Big Characters' program for 8K ROM and 1K RAM. Displays 2 lines of 16 large characters. Uses Boolean-free logic for 8K ROM compatibility (AND/OR no longer operate as bit manipulators in 8K ROM). Supports inverse video with a single line change."
category:
  - name: "Syntax"
    slug: "syntax"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/syntax/"
post_tag:
  - name: "BASIC (programming language)"
    slug: "basic-programming-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/basic-programming-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: "William Wentz"
    slug: "william-wentz"
    taxonomy: "indiv"
    url: "http://localhost/indiv/william-wentz/"
publication_r:
  id: 10246
  title: "Syntax"
  type: "periodical"
  url: "http://localhost/periodical/syntax/"
authors_r:
  - name: "William Wentz"
    slug: "william-wentz"
    taxonomy: "indiv"
    url: "http://localhost/indiv/william-wentz/"
volume: "3"
issue: "7"
issues_articles:
  - id: 52481
    title: "Syntax/Syntax ZX80 v3 n7"
    type: "issue"
    url: "http://localhost/issue/syntax-syntax-zx80-v3-n7/"
pages: "17"
pubdate: "July 1982"
archive_link: false
---

# Grandson of Big Characters

Update of John Filley’s ‘Son of Big Characters’ program for 8K ROM and 1K RAM. Displays 2 lines of 16 large characters. Uses Boolean-free logic for 8K ROM compatibility (AND/OR no longer operate as bit manipulators in 8K ROM). Supports inverse video with a single line change.