---
title: "Hardware Review: Marex ROM Switch"
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slug: "hardware-review-marex-rom-switch"
url: "http://localhost/article/hardware-review-marex-rom-switch/"
markdown_url: "http://localhost/article/hardware-review-marex-rom-switch.md"
published_at: "2026-03-13T00:44:01+00:00"
modified_at: "2026-03-13T00:44:01+00:00"
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excerpt: "Review of a 4K/8K ROM switch for the ZX80 from Marex Electronics, Valley City OH. Available in kit or assembled versions at $24.95-$49.95. Covers assembly experience, problems found (static sensitivity, PC board short), and usage tips for switching between ROMs."
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    url: "http://localhost/tag/zx80/"
model:
  - name: "Sinclair ZX80"
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    taxonomy: "model"
    url: "http://localhost/model/zx80/"
indiv:
  - name: "Ann Zevnik"
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publication_r:
  id: 10246
  title: "Syntax"
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authors_r:
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volume: "3"
issue: "3"
issues_articles:
  - id: 52476
    title: "Syntax/Syntax ZX80 v3 n3"
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    url: "http://localhost/issue/syntax-syntax-zx80-v3-n3/"
pages: "16"
pubdate: "March 1982"
archive_link: false
---

# Hardware Review: Marex ROM Switch

Review of a 4K/8K ROM switch for the ZX80 from Marex Electronics, Valley City OH. Available in kit or assembled versions at $24.95-$49.95. Covers assembly experience, problems found (static sensitivity, PC board short), and usage tips for switching between ROMs.