---
title: "Perceptions"
type: "article"
slug: "perceptions-6"
url: "http://localhost/article/perceptions-6/"
markdown_url: "http://localhost/article/perceptions-6.md"
published_at: "2020-10-27T17:18:50+00:00"
modified_at: "2024-06-23T01:05:02+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "The ZX81 Parser and User-Defined Commands; More on the 16K RAM Pack Schematic; Addenda to \"The ZX80/81 Video Display System.\""
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: "ZX80"
    slug: "zx80"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx80/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Sinclair ZX80"
    slug: "zx80"
    taxonomy: "model"
    url: "http://localhost/model/zx80/"
  - name: "Sinclair ZX81"
    slug: "zx81"
    taxonomy: "model"
    url: "http://localhost/model/zx81/"
indiv:
  - name: "David Ornstein"
    slug: "david-ornstein"
    taxonomy: "indiv"
    url: "http://localhost/indiv/david-ornstein/"
publication: "Sync"
publication_r:
  id: 10243
  title: "SYNC"
  type: "periodical"
  url: "http://localhost/periodical/sync-magazine/"
authors: "David Ornstein"
volume: "2"
issue: "3"
issues_articles:
  - id: 26643
    title: "SYNC v2 n3"
    type: "issue"
    url: "http://localhost/issue/sync-v2-n3/"
pages: "14-15"
pubdate: "May/June 1982"
archive_link: false
volumeissue: "v2n3"
---

# Perceptions

The ZX81 Parser and User-Defined Commands; More on the 16K RAM Pack Schematic; Addenda to “The ZX80/81 Video Display System.”