---
title: "ZX Spectrum ROM Assembly Code"
id: 52322
type: "document"
slug: "zx-spectrum-rom-assembly-code"
url: "http://localhost/document/zx-spectrum-rom-assembly-code/"
markdown_url: "http://localhost/document/zx-spectrum-rom-assembly-code.md"
published_at: "2023-12-26T22:38:44+00:00"
modified_at: "2026-03-15T19:50:38+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Z80 assembly source code for the ZX Spectrum, supplied to Timex Computer Corporation. Dated November 23, 1983, the listings indicate that they were for the TS2000 prototype. This was Lon Hildreth's working copy and contains his handwritten annotations."
category:
  - name: "Documentation"
    slug: "documentation"
    taxonomy: "category"
    url: "http://localhost/category/documentation/"
post_tag:
  - name: "Timex Computer Corporation"
    slug: "timex-computer-corporation"
    taxonomy: "post_tag"
    url: "http://localhost/tag/timex-computer-corporation/"
  - name: "TS 2068"
    slug: "ts2068"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts2068/"
model:
  - name: "Timex/Sinclair 2068"
    slug: "ts-2068"
    taxonomy: "model"
    url: "http://localhost/model/ts-2068/"
indiv:
  - name: "Lon Hildreth"
    slug: "lon-hildreth"
    taxonomy: "indiv"
    url: "http://localhost/indiv/lon-hildreth/"
document_url: "https://archive.org/details/timex-computer-corp/ZX%20Spectrum%20ROM%20Assembly%20Code%2011-23-1982/mode/1up"
pages: 233
document_date: "November 23, 1983"
document_publisher:
  - id: 11401
    title: "Timex Computer Corporation"
    type: "company"
    url: "http://localhost/company/timex-computer-corporation/"
---

Z80 assembly source code for the ZX Spectrum, supplied to Timex Computer Corporation. Dated November 23, 1983, the listings indicate that they were for the TS2000 prototype.

This was [Lon Hildreth’s](http://localhost/indiv/lon-hildreth/) working copy and contains his handwritten annotations.