---
title: "ZX/TS P and R: Self-Running Program and Math Drill Programs"
type: "article"
slug: "zx-ts-p-and-r-self-running-program-and-math-drill-programs"
url: "http://localhost/article/zx-ts-p-and-r-self-running-program-and-math-drill-programs/"
markdown_url: "http://localhost/article/zx-ts-p-and-r-self-running-program-and-math-drill-programs.md"
published_at: "2026-03-13T12:52:04+00:00"
modified_at: "2026-03-13T12:52:05+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Programming tip for creating self-running programs (SAVE and GOTO at lines 9998–9999 so programs auto-start on LOAD without erasing variables). Followed by three Math Drill BASIC programs — multiplication, addition, and subtraction — designed for children learning arithmetic; described by the author as their very first programs written after reading the ZX81 manual."
category:
  - name: "The Plotter"
    slug: "the-plotter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/the-plotter/"
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: "Rod Gowen"
    slug: "rod-gowen"
    taxonomy: "indiv"
    url: "http://localhost/indiv/rod-gowen/"
publication_r:
  id: 21216
  title: "The Plotter"
  type: "periodical"
  url: "http://localhost/periodical/the-plotter/"
authors_r:
  - name: "Rod Gowen"
    slug: "rod-gowen"
    taxonomy: "indiv"
    url: "http://localhost/indiv/rod-gowen/"
volume: "1"
issue: "3"
issues_articles:
  - id: 39409
    title: "The Plotter v1 n3"
    type: "issue"
    url: "http://localhost/issue/the-plotter-v1-n3/"
pages: "2"
archive_link: false
---

# ZX/TS P and R: Self-Running Program and Math Drill Programs

Programming tip for creating self-running programs (SAVE and GOTO at lines 9998–9999 so programs auto-start on LOAD without erasing variables). Followed by three Math Drill BASIC programs — multiplication, addition, and subtraction — designed for children learning arithmetic; described by the author as their very first programs written after reading the ZX81 manual.