---
title: "ZX81 Reference Card"
id: 14809
type: "product"
slug: "zx81-reference-card"
url: "http://localhost/product/zx81-reference-card/"
markdown_url: "http://localhost/product/zx81-reference-card.md"
published_at: "2019-11-30T01:20:58+00:00"
modified_at: "2024-05-25T13:06:40+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "10-panel, 20-page accordion reference card to ZX81/TS 1000. Covers graphics, BASIC commands and functions, special commands and operators, screen layout, all codes from 0 to 255, selected ROM calls, tips on using FOR-NEXT and IF-THEN statements, ZX80 and ZX81 memory maps, Z80 timing charts, condition code chart, hex/decimal conversion, and Z80 op codes including decimal…"
category:
  - name: "Accessory"
    slug: "accessory"
    taxonomy: "category"
    url: "http://localhost/category/accessory/"
post_tag:
  - name: "D-RAM Products"
    slug: "d-ram-products"
    taxonomy: "post_tag"
    url: "http://localhost/tag/d-ram-products/"
  - name: "Nanos Systems Corp"
    slug: "nanos-systems-corp"
    taxonomy: "post_tag"
    url: "http://localhost/tag/nanos-systems-corp/"
  - 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/"
company:
  id: 11131
  title: "Nanos Systems Corp"
  type: "company"
  url: "http://localhost/company/nanos-systems-corp/"
price: 5.95
date: 1983
rarity: "Uncommon"
articles:
  - article:
      id: 24391
      title: "Buyer’s Guide Supplement"
      type: "article"
      url: "http://localhost/article/buyers-guide-supplement/"
companies_products:
  - id: 10794
    title: "D-RAM Products"
    type: "company"
    url: "http://localhost/company/d-ram-products/"
  - id: 11131
    title: "Nanos Systems Corp"
    type: "company"
    url: "http://localhost/company/nanos-systems-corp/"
---

10-panel, 20-page accordion reference card to ZX81/TS 1000. Covers graphics, BASIC commands and functions, special commands and operators, screen layout, all codes from 0 to 255, selected ROM calls, tips on using FOR-NEXT and IF-THEN statements, ZX80 and ZX81 memory maps, Z80 timing charts, condition code chart, hex/decimal conversion, and Z80 op codes including decimal equivalents for peek and poke.