---
title: "4K/8K ROMs in One ZX-80"
type: "article"
slug: "4k-8k-roms-in-one-zx-80"
url: "http://localhost/article/4k-8k-roms-in-one-zx-80/"
markdown_url: "http://localhost/article/4k-8k-roms-in-one-zx-80.md"
published_at: "2020-10-27T17:18:50+00:00"
modified_at: "2024-06-23T01:04:58+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "This article describes the final solution that I used to make both ROMs available to my ZX80. 1 installed the ROMs piggyback in the socket and switch selected the ROM to be used. The modification is very simple and requires only a soldering iron, an spdt switch, and a few inches of wire."
category:
  - name: "SYNC"
    slug: "sync"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sync/"
post_tag:
  - name: "1982"
    slug: "year-1982"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1982/"
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "ZX80"
    slug: "zx80"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx80/"
model:
  - name: "Sinclair ZX80"
    slug: "zx80"
    taxonomy: "model"
    url: "http://localhost/model/zx80/"
indiv:
  - name: "Michael Rubesch"
    slug: "michael-rubesch"
    taxonomy: "indiv"
    url: "http://localhost/indiv/michael-rubesch/"
publication: "Sync"
publication_r:
  id: 10243
  title: "SYNC"
  type: "periodical"
  url: "http://localhost/periodical/sync-magazine/"
authors: "Michael Rubesch"
volume: "2"
issue: "2"
issues_articles:
  - id: 26642
    title: "SYNC v2 n2"
    type: "issue"
    url: "http://localhost/issue/sync-v2-n2/"
pages: "40"
pubdate: "March/April 1982"
archive_link: false
volumeissue: "v2n2"
---

# 4K/8K ROMs in One ZX-80

This article describes the final solution that I used to make both ROMs available to my ZX80. 1 installed the ROMs piggyback in the socket and switch selected the ROM to be used. The modification is very simple and requires only a soldering iron, an spdt switch, and a few inches of wire.