---
title: "LKDOS/Extended BASIC Cartridge"
id: 27917
type: "product"
slug: "lkdos-extended-basic-cartridge"
url: "http://localhost/product/lkdos-extended-basic-cartridge/"
markdown_url: "http://localhost/product/lkdos-extended-basic-cartridge.md"
published_at: "2020-10-24T02:01:51+00:00"
modified_at: "2026-03-22T13:13:04+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Contains Larken DOS with 8K ROM and 8K RAM on the cartridge. Used to control Larken DSK-400 or other disk interfaces. All LKDOS or extended BASIC commands use the PRINT #4: syntax. Support for all Timex DOS commands. Extended basic commands include CIRCLE, windows, box clear and fill, channel support for devices, variations of POKE,…"
category:
  - name: "Disk Drive Systems"
    slug: "disk-other"
    taxonomy: "category"
    url: "http://localhost/category/hardware/disk-other/"
post_tag:
  - name: "Downloadable"
    slug: "downloadable"
    taxonomy: "post_tag"
    url: "http://localhost/tag/downloadable/"
  - name: "Ed Grey Enterprises"
    slug: "ed-grey-enterprises"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ed-grey-enterprises/"
  - name: "John Oliger Co."
    slug: "john-oliger-co"
    taxonomy: "post_tag"
    url: "http://localhost/tag/john-oliger-co/"
  - name: "LARKEN Electronics"
    slug: "larken-electronics"
    taxonomy: "post_tag"
    url: "http://localhost/tag/larken-electronics/"
  - name: "RAMEX International"
    slug: "ramex-international"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ramex-international/"
  - 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: "Disk Drive Systems"
    slug: "disk-drive-systems"
    taxonomy: "genre"
    url: "http://localhost/type/disk-drive-systems/"
  - name: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
company:
  id: 11042
  title: "LARKEN Electronics"
  type: "company"
  url: "http://localhost/company/larken-electronics/"
price: 65
date: 1988
rarity: "Uncommon"
related_content:
  - id: 20471
    title: "Problems in Using the New V.24 “Merge” Command"
    type: "document"
    url: "http://localhost/document/problems-in-using-the-new-v-24-merge-command-2/"
  - id: 54679
    title: "Letter from Les Cottrell to Bob Swoger with Larken disk interface schematics"
    type: "document"
    url: "http://localhost/document/letter-from-les-cottrell-to-bob-swoger-with-larken-disk-interface-schematics/"
articles:
  - article:
      id: 23323
      title: "2068 Larken Disk Menu Maker"
      type: "article"
      url: "http://localhost/article/2068-larken-disk-menu-maker/"
  - article:
      id: 23497
      title: "Bob’s Notebook: Larken Extended BASIC example"
      type: "article"
      url: "http://localhost/article/bobs-notebook-larken-extended-basic-example/"
  - article:
      id: 23226
      title: "LKDOS “Didja Knows”"
      type: "article"
      url: "http://localhost/article/lkdos-didja-knows/"
  - article:
      id: 23842
      title: "LKDOS Disassembly"
      type: "article"
      url: "http://localhost/article/lkdos-disassembly-2/"
  - article:
      id: 23783
      title: "LKDOS Disassembly"
      type: "article"
      url: "http://localhost/article/lkdos-disassembly/"
  - article:
      id: 23386
      title: "LKDOS Disk Utility Double to Quad"
      type: "article"
      url: "http://localhost/article/lkdos-disk-utility-double-to-quad/"
  - article:
      id: 21714
      title: "LKDOS Off Switch (For MAX DOS Operation)"
      type: "article"
      url: "http://localhost/article/lkdos-off-switch-for-max-dos-operation/"
adverts:
  - publication:
      - id: 26579
        title: "Sinc-Link v7 n3"
        type: "issue"
        url: "http://localhost/issue/sinc-link-v7-n3/"
    advert_page: "24"
  - publication:
      - id: 26511
        title: "Update October 1988"
        type: "issue"
        url: "http://localhost/issue/ts-2068-up-date-october-1988/"
    advert_page: "1"
  - publication:
      - id: 26483
        title: "Update April 1988"
        type: "issue"
        url: "http://localhost/issue/ts-2068-up-date-april-1988-2/"
    advert_page: "42"
companies_products:
  - id: 10843
    title: "Ed Grey Enterprises"
    type: "company"
    url: "http://localhost/company/ed-grey-enterprises/"
  - id: 10990
    title: "John Oliger Co."
    type: "company"
    url: "http://localhost/company/john-oliger-co/"
  - id: 11042
    title: "LARKEN Electronics"
    type: "company"
    url: "http://localhost/company/larken-electronics/"
  - id: 11214
    title: "RAMEX International"
    type: "company"
    url: "http://localhost/company/ramex-international/"
---

# LKDOS/Extended BASIC Cartridge

Contains Larken DOS with 8K ROM and 8K RAM on the cartridge. Used to control Larken DSK-400 or other disk interfaces.

All LKDOS or extended BASIC commands use the PRINT #4: syntax. Support for all Timex DOS commands.

Extended basic commands include CIRCLE, windows, box clear and fill, channel support for devices, variations of POKE, PAPER, INK and CLEAR.

Fully compatible with OS-64, Spectrum and other cartridges. Versions for Oliger and RAMEX disk systems.