---
title: "RAM Extension For The QL (512K)"
type: "article"
slug: "ram-extension-for-the-ql-512k"
url: "http://localhost/article/ram-extension-for-the-ql-512k/"
markdown_url: "http://localhost/article/ram-extension-for-the-ql-512k.md"
published_at: "2026-01-12T14:25:14+00:00"
modified_at: "2026-01-12T14:27:43+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Here is a circuit diagram which can be used as the basis for a 512K RAM expansion for the QL. There is no printed circuit board pattern but it can be wired up rather easily on a wirewrap board."
category:
  - name: "QZX"
    slug: "qzx"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/qzx/"
post_tag:
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "QL"
    slug: "ql"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "Guillermo Antonio Garcia (LU8MAD)"
    slug: "guillermo-antonio-garcia-lu8mad"
    taxonomy: "indiv"
    url: "http://localhost/indiv/guillermo-antonio-garcia-lu8mad/"
publication: "QZX"
publication_r:
  id: 21219
  title: "QZX"
  type: "periodical"
  url: "http://localhost/periodical/qzx/"
authors_r:
  - name: "Guillermo Antonio Garcia (LU8MAD)"
    slug: "guillermo-antonio-garcia-lu8mad"
    taxonomy: "indiv"
    url: "http://localhost/indiv/guillermo-antonio-garcia-lu8mad/"
volume: "8"
issue: "8"
issues_articles:
  - id: 50213
    title: "QZX v8 n8"
    type: "issue"
    url: "http://localhost/issue/qzx-v8-n8/"
pages: "6"
pubdate: "July 1990"
archive_link: false
---

Here is a circuit diagram which can be used as the basis for a 512K RAM expansion for the QL. There is no printed circuit board pattern but it can be wired up rather easily on a wirewrap board.