---
title: "Screen Kit"
id: 13869
type: "product"
slug: "screen-kit"
url: "http://localhost/product/screen-kit/"
markdown_url: "http://localhost/product/screen-kit.md"
published_at: "2019-11-30T01:27:26+00:00"
modified_at: "2026-03-22T13:35:46+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Series of machine code routines for use in Basic programs. Execute complicated operations with a few commands: Draw any size border; clear part or all of the screen; slide screen up, down, right, or left; invert video on part or all of the screen; create a flashing cursor; find how much memory is left; load…"
category:
  - name: "Programming"
    slug: "programming"
    taxonomy: "category"
    url: "http://localhost/category/software/programming/"
post_tag:
  - name: "Mindware"
    slug: "mindware"
    taxonomy: "post_tag"
    url: "http://localhost/tag/mindware/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Programming"
    slug: "programming"
    taxonomy: "genre"
    url: "http://localhost/type/programming/"
  - name: "Software"
    slug: "software"
    taxonomy: "genre"
    url: "http://localhost/type/software/"
company:
  id: 11120
  title: "Mindware, Inc."
  type: "company"
  url: "http://localhost/company/mindware/"
price: 19.95
date: 1983
rarity: "Uncommon"
producturl: "http://www.zx81stuff.org.uk/zx81/tape/ScreenKit1"
articles:
  - article:
      id: 24414
      title: "Programming Your Computer"
      type: "article"
      url: "http://localhost/article/programming-your-computer/"
companies_products:
  - id: 11120
    title: "Mindware, Inc."
    type: "company"
    url: "http://localhost/company/mindware/"
---

# Screen Kit

Series of machine code routines for use in Basic programs. Execute complicated operations with a few commands: Draw any size border; clear part or all of the screen; slide screen up, down, right, or left; invert video on part or all of the screen; create a flashing cursor; find how much memory is left; load any character to the whole screen; save and load Basic variables only to create data files.