---
title: "ZX Bug"
id: 14701
type: "product"
slug: "zx-bug"
url: "http://localhost/product/zx-bug/"
markdown_url: "http://localhost/product/zx-bug.md"
published_at: "2019-11-30T01:18:37+00:00"
modified_at: "2026-03-22T13:39:32+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2020/08/Gladstone-zx-bug.jpg"
excerpt: "Machine code monitor and disassembler. ZXBUG is a powerful tool for machine language programming. It is 4K long and uses memory from 71E0h to the top memory. ZX BUG works in hexadecimal (base 16), not decimal, so all addresses are a maximum of 4 hex bits long. Provides a total of 28 commands. 16K."
category:
  - name: "Programming"
    slug: "programming"
    taxonomy: "category"
    url: "http://localhost/category/software/programming/"
post_tag:
  - name: "Artic Computing"
    slug: "artic-computing"
    taxonomy: "post_tag"
    url: "http://localhost/tag/artic-computing/"
  - name: "data-assette"
    slug: "data-assette"
    taxonomy: "post_tag"
    url: "http://localhost/tag/data-assette/"
  - name: "Downloadable"
    slug: "downloadable"
    taxonomy: "post_tag"
    url: "http://localhost/tag/downloadable/"
  - name: "Gladstone Electronics"
    slug: "gladstone-electronics"
    taxonomy: "post_tag"
    url: "http://localhost/tag/gladstone-electronics/"
  - name: "International Publishing & Software Inc"
    slug: "international-publishing-software-inc"
    taxonomy: "post_tag"
    url: "http://localhost/tag/international-publishing-software-inc/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Programming"
    slug: "programming"
    taxonomy: "genre"
    url: "http://localhost/type/programming/"
  - name: "Software"
    slug: "software"
    taxonomy: "genre"
    url: "http://localhost/type/software/"
company:
  id: 10657
  title: "Artic Computing"
  type: "company"
  url: "http://localhost/company/artic-computing/"
price: 14.95
date: 1982
rarity: "Uncommon"
producturl: "http://www.zx81stuff.org.uk/zx81/tape/ZXBug(IPS)"
related_content:
  - id: 24374
    title: "Resources (Sync v2 n4)"
    type: "article"
    url: "http://localhost/article/resources-sync-v2-n4/"
adverts:
  - publication:
      - id: 26645
        title: "SYNC v2 n5"
        type: "issue"
        url: "http://localhost/issue/sync-v2-n5/"
    advert_page: "45"
related_products:
  - id: 51820
    title: "ZX Bug"
    type: "computer_media"
    url: "http://localhost/computer_media/zx-bug/"
companies_products:
  - id: 10798
    title: "Data-assette"
    type: "company"
    url: "http://localhost/company/data-assette/"
  - id: 10902
    title: "Gladstone Electronics"
    type: "company"
    url: "http://localhost/company/gladstone-electronics/"
  - id: 10960
    title: "International Publishing & Software Inc"
    type: "company"
    url: "http://localhost/company/international-publishing-software-inc/"
---

# ZX Bug

Machine code monitor and disassembler. ZXBUG is a powerful tool for machine language programming. It is 4K long and uses memory from 71E0h to the top memory. ZX BUG works in hexadecimal (base 16), not decimal, so all addresses are a maximum of 4 hex bits long. Provides a total of 28 commands. 16K.