---
title: "Back-Up Copying Protected Programs"
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markdown_url: "http://localhost/article/back-up-copying-protected-programs.md"
published_at: "2026-03-15T00:47:13+00:00"
modified_at: "2026-03-15T00:47:13+00:00"
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excerpt: "Explains techniques for stopping and backing up self-running TS1000 programs, including using the BREAK key, the STOP command for numeric input screens (SHIFT-A), and string input screens (delete quote, type STOP). For machine language programs, uses RAND USR 0 sequence to interrupt, then LIST and SAVE with GOTO line. Introduces a companion reprinted article on…"
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  - name: "Machine language programming"
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  - name: "TS 1000"
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model:
  - name: "Timex/Sinclair 1000"
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indiv:
  - name: "John Ezike"
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publication_r:
  id: 21571
  title: "Timelinez"
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  - name: "John Ezike"
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volume: "7"
issue: "4"
issues_articles:
  - id: 38869
    title: "Timelinez v7 n4"
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pages: "3"
pubdate: "April 1989"
archive_link: false
---

# Back-Up Copying Protected Programs

Explains techniques for stopping and backing up self-running TS1000 programs, including using the BREAK key, the STOP command for numeric input screens (SHIFT-A), and string input screens (delete quote, type STOP). For machine language programs, uses RAND USR 0 sequence to interrupt, then LIST and SAVE with GOTO line. Introduces a companion reprinted article on a modified LOAD command for more difficult cases.