---
title: "2068 User Cartridge Board"
id: 11564
type: "product"
slug: "2068-user-cartridge-rev-a"
url: "http://localhost/product/2068-user-cartridge-rev-a/"
markdown_url: "http://localhost/product/2068-user-cartridge-rev-a.md"
published_at: "2019-11-30T01:19:46+00:00"
modified_at: "2026-03-22T13:20:31+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2019/11/JLO-Cartridge-PCB-Top-803x1024-1.jpg"
excerpt: "Plugs into the cartridge port of the TS 2068 computer. Can hold two 2764 or two 27128 EPROMs in any combination. It allows TS 2068 owners, when used with the TS 2068 or TS 1000 programmers, to store BASIC programs in cartridge form. Includes assembly instructions, schematic and instructions for its use with BASIC programs.…"
category:
  - name: "Miscellaneous"
    slug: "misc"
    taxonomy: "category"
    url: "http://localhost/category/hardware/misc/"
post_tag:
  - name: "John Oliger Co."
    slug: "john-oliger-co"
    taxonomy: "post_tag"
    url: "http://localhost/tag/john-oliger-co/"
  - 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: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
  - name: "Miscellaneous hardware"
    slug: "miscellaneous-hardware"
    taxonomy: "genre"
    url: "http://localhost/type/miscellaneous-hardware/"
company:
  id: 10990
  title: "John Oliger Co."
  type: "company"
  url: "http://localhost/company/john-oliger-co/"
date: 1985
rarity: "Uncommon"
related_content:
  - id: 35596
    title: "How to use the 2068 User Cartridge Board"
    type: "document"
    url: "http://localhost/document/how-to-use-the-2068-user-cartridge-board/"
articles:
  - article:
      id: 19825
      title: "New Products and Services (Syntax v5 n5)"
      type: "article"
      url: "http://localhost/article/new-products-and-services-16/"
adverts:
  - publication:
      - id: 26461
        title: "Update July 1988"
        type: "issue"
        url: "http://localhost/issue/ts-2068-up-date-july-1988/"
    advert_page: "48"
companies_products:
  - id: 10990
    title: "John Oliger Co."
    type: "company"
    url: "http://localhost/company/john-oliger-co/"
---

# 2068 User Cartridge Board

Plugs into the cartridge port of the TS 2068 computer. Can hold two 2764 or two 27128 EPROMs in any combination. It allows TS 2068 owners, when used with the TS 2068 or TS 1000 programmers, to store BASIC programs in cartridge form. Includes assembly instructions, schematic and instructions for its use with BASIC programs.

The 74LS138 chip allow you to select where to map the content of the EPROMs. The starting positions are: 0, 8192, 16384, 24576, 32768, 40870, 49152, 57354.  

The cartridge shown fitted with EPROMs is configured to put the first 27C64 EPROM at memory location 32768 and the second 27C64 EPROM at 40870.

![Image](http://localhost/wp-content/uploads/2021/05/JLO-Cartridge-PCB-Top-803x1024.jpg)Blank cartridge top

![Image](http://localhost/wp-content/uploads/2021/05/JLO-Cartridge-Bottom-803x1024.jpg)Blank cartridge bottom

![Image](http://localhost/wp-content/uploads/2021/05/JLO-Cartridge.jpg)Cartridge fitted with two EPROMs

![Image](http://localhost/wp-content/uploads/2021/05/JLO-Cartridge-PCB-Top-726x1024.png)Cartridge PCB layout top

![Image](http://localhost/wp-content/uploads/2021/05/JLO-Cartridge-PCB-Bottom-726x1024.png)Cartridge PCB layout bottom

![Image](http://localhost/wp-content/uploads/2021/05/JLO-Cartridge-PCB-Schematic.png)Cartridge schematic