---
title: "Understanding and Using PEEK and POKE"
type: "article"
slug: "understanding-and-using-peek-and-poke"
url: "http://localhost/article/understanding-and-using-peek-and-poke/"
markdown_url: "http://localhost/article/understanding-and-using-peek-and-poke.md"
published_at: "2022-07-23T13:41:11+00:00"
modified_at: "2024-05-26T13:40:29+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "How to use PEEK an POKE to examine and alter memory contents. Includes routines to invert characters on the screen and scrolling the screen up or down."
category:
  - name: "Sinc-Link"
    slug: "sinc-link"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sinc-link/"
post_tag:
  - 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: "Stan Piotrowski"
    slug: "stan-piotrowski"
    taxonomy: "indiv"
    url: "http://localhost/indiv/stan-piotrowski/"
publication_r:
  id: 10240
  title: "Sinc-Link"
  type: "periodical"
  url: "http://localhost/periodical/sinc-link/"
authors: "Stan Piotrowski"
volume: "1"
issue: "2"
issues_articles:
  - id: 39327
    title: "Sinc-Link v1 n2"
    type: "issue"
    url: "http://localhost/issue/sinc-link-vol-01-no-2/"
pages: "6-10"
archive_link: false
---

# Understanding and Using PEEK and POKE

How to use PEEK an POKE to examine and alter memory contents. Includes routines to invert characters on the screen and scrolling the screen up or down.