---
title: "Machine Code Programming — Understanding the Stack"
type: "article"
slug: "machine-code-programming-understanding-the-stack"
url: "http://localhost/article/machine-code-programming-understanding-the-stack/"
markdown_url: "http://localhost/article/machine-code-programming-understanding-the-stack.md"
published_at: "2020-10-27T21:11:13+00:00"
modified_at: "2024-06-23T01:09:33+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Often when writing machine code (MC) programs, it's useful to keep the MC above RAMTOP. But few people understand how to move RAMTOP and the Z80's stack pointer from within MC."
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  - name: "Ian Logan"
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publication: "Syntax"
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  title: "Syntax"
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authors: "Ian Logan"
volume: "3"
issue: "8"
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    title: "Syntax/Syntax ZX80 v3 n8"
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pages: "19"
pubdate: "August 1982"
archive_link: false
volumeissue: "v3n8"
---

# Machine Code Programming — Understanding the Stack

Often when writing machine code (MC) programs, it’s useful to keep the MC above RAMTOP. But few people understand how to move RAMTOP and the Z80’s stack pointer from within MC.