---
title: "Speed Up PRINT Lines — ZX81"
type: "article"
slug: "speed-up-print-lines-zx81"
url: "http://localhost/article/speed-up-print-lines-zx81/"
markdown_url: "http://localhost/article/speed-up-print-lines-zx81.md"
published_at: "2026-03-13T00:33:18+00:00"
modified_at: "2026-03-13T00:33:18+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Tips for making PRINT statements execute significantly faster by adding an AT-based padding line after SCROLL operations. Demonstrates a ~47% speed improvement for short programs and dramatic gains for programs with large arrays."
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: "John Oliger"
    slug: "john-oliger"
    taxonomy: "indiv"
    url: "http://localhost/indiv/john-oliger/"
publication_r:
  id: 10246
  title: "Syntax"
  type: "periodical"
  url: "http://localhost/periodical/syntax/"
authors_r:
  - name: "John Oliger"
    slug: "john-oliger"
    taxonomy: "indiv"
    url: "http://localhost/indiv/john-oliger/"
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: "6"
pubdate: "April 1982"
archive_link: false
---

# Speed Up PRINT Lines — ZX81

Tips for making PRINT statements execute significantly faster by adding an AT-based padding line after SCROLL operations. Demonstrates a ~47% speed improvement for short programs and dramatic gains for programs with large arrays.