---
title: "CATS Library Tape 9"
id: 64507
type: "computer_media"
slug: "cats-library-tape-9"
url: "http://localhost/computer_media/cats-library-tape-9/"
markdown_url: "http://localhost/computer_media/cats-library-tape-9.md"
published_at: "2026-02-24T13:18:26+00:00"
modified_at: "2026-04-01T16:20:38+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2019/02/20230809-041332.jpg"
excerpt: "Watch Gaussian bell curves rendered in perspective, animated saddle surfaces cycling through memory pages, and a rotating 3D pyramid with hidden-line removal — Tape 9 is a showcase of what the TS 2068 can do with math and machine code."
category:
  - name: "Archived Media"
    slug: "archived-media"
    taxonomy: "category"
    url: "http://localhost/category/archived-media/"
post_tag:
  - name: "Capital Area Timex Sinclair Users Group"
    slug: "cats"
    taxonomy: "post_tag"
    url: "http://localhost/tag/cats/"
  - name: "Downloadable"
    slug: "downloadable"
    taxonomy: "post_tag"
    url: "http://localhost/tag/downloadable/"
  - 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/"
genre:
  - name: "Collection"
    slug: "collection"
    taxonomy: "genre"
    url: "http://localhost/type/collection/"
media_contents:
  - id: 55580
    title: "2068 Graphics and Trig"
    type: "computer_media"
    url: "http://localhost/computer_media/2068-graphics-and-trig/"
  - id: 55587
    title: "Moving Waves"
    type: "computer_media"
    url: "http://localhost/computer_media/moving-waves/"
  - id: 53844
    title: "QRL"
    type: "computer_media"
    url: "http://localhost/computer_media/qrlfor2068/"
  - id: 55594
    title: "Rotating Pyramid"
    type: "computer_media"
    url: "http://localhost/computer_media/rotating-pyramid/"
  - id: 55599
    title: "Sprite 2"
    type: "computer_media"
    url: "http://localhost/computer_media/sprite-2/"
  - id: 64598
    title: "Complex 7"
    type: "computer_media"
    url: "http://localhost/computer_media/complex-7/"
  - id: 64600
    title: "Droppages"
    type: "computer_media"
    url: "http://localhost/computer_media/droppages/"
  - id: 64603
    title: "Drop"
    type: "computer_media"
    url: "http://localhost/computer_media/drop/"
  - id: 64605
    title: "EXP"
    type: "computer_media"
    url: "http://localhost/computer_media/exp/"
  - id: 64606
    title: "Saddle Cosine"
    type: "computer_media"
    url: "http://localhost/computer_media/saddle-cosine/"
  - id: 64607
    title: "Saddle Cosine 1"
    type: "computer_media"
    url: "http://localhost/computer_media/saddle-cosine-1/"
media_type: "Cassette"
download_url: "https://archive.org/download/timex-sinclair-software-archive/CATS%20Library%20Tape%209%20%28198x%29%28Capital%20Area%20Timex%20Sinclair%20Users%20Group%29%28TS2068%29%28US%29%28Cassette%29.zip"
tsrun_member: "CATS Library Tape 9 (198x)(Capital Area Timex Sinclair Users Group)(TS2068)(US)(Cassette)/Complex7 (198x)(Jones, James)(TS2068)(US)(Program).tap"
mediadate: "198x"
article_media:
  - id: 62627
    title: "New 2068 Library Volumes!"
    type: "article"
    url: "http://localhost/article/new-2068-library-volumes/"
related_content:
  - id: 24821
    title: "Capital Area Timex Sinclair Users Group"
    type: "usergroup"
    url: "http://localhost/usergroup/capital-area-timex-sinclair-users-group/"
media_type_tags: "Collection"
---

# CATS Library Tape 9

An 11-program collection from the Capital Area Timex Sinclair User Group devoted to 3D graphics, mathematical surface plotting, and animation.