---
title: "TMS 9918A Video Upgrade"
id: 14526
type: "product"
slug: "video-upgrade-project"
url: "http://localhost/product/video-upgrade-project/"
markdown_url: "http://localhost/product/video-upgrade-project.md"
published_at: "2019-11-30T01:44:07+00:00"
modified_at: "2026-03-22T13:13:21+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Two board, extensive upgrade that integrates the TMS 9918A video display processor into the ZX81/TS1000. Provides: colormultiple graphics resolutions, up to 256x192 pixelsup to 32 spritesa SLOW mode almost as fast as FAST modeblink free FAST modelower case characters instead of inverse upper case Interfaces the TMS 9918A color graphics video chip, same as used…"
category:
  - name: "Video"
    slug: "video"
    taxonomy: "category"
    url: "http://localhost/category/hardware/video/"
post_tag:
  - name: "Downloadable"
    slug: "downloadable"
    taxonomy: "post_tag"
    url: "http://localhost/tag/downloadable/"
  - name: "John Oliger Co."
    slug: "john-oliger-co"
    taxonomy: "post_tag"
    url: "http://localhost/tag/john-oliger-co/"
  - name: "TMS9918"
    slug: "tms9918"
    taxonomy: "post_tag"
    url: "http://localhost/tag/tms9918/"
  - 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/"
genre:
  - name: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
  - name: "Video"
    slug: "video"
    taxonomy: "genre"
    url: "http://localhost/type/video/"
company:
  id: 10990
  title: "John Oliger Co."
  type: "company"
  url: "http://localhost/company/john-oliger-co/"
price: 48.95
date: 1986
rarity: "Uncommon"
related_content:
  - id: 9390
    title: "A Video Upgrade?"
    type: "article"
    url: "http://localhost/article/a-video-upgrade/"
  - id: 10472
    title: "TMS9918A Video Upgrade For The TS1000"
    type: "article"
    url: "http://localhost/article/tms9918a-video-upgrade-for-the-ts1000/"
  - id: 9364
    title: "TMS9918A Video Upgrade: Part 1"
    type: "article"
    url: "http://localhost/article/tms9918a-video-upgrade-part-1/"
  - id: 9329
    title: "TMS9918A Video Upgrade: Part 2"
    type: "article"
    url: "http://localhost/article/tms9918a-video-upgrade-part-2/"
  - id: 10429
    title: "TS1500 Video Topics"
    type: "article"
    url: "http://localhost/article/ts1500-video-topics/"
  - id: 10538
    title: "ZX 81 News and Resources"
    type: "article"
    url: "http://localhost/article/zx-81-news-and-resources/"
  - id: 36730
    title: "TMS9918A VDP Enhanced BASIC Programming Cassette"
    type: "product"
    url: "http://localhost/product/tms9918a-vdp-enhanced-basic-programming-cassette/"
  - id: 54777
    title: "TS1500 Meets Oliger Video"
    type: "document"
    url: "http://localhost/document/ts1500-meets-oliger-video/"
product_reviews:
  - id: 53922
    title: "Video Board Upgrade for Your TSZX"
    type: "article"
    url: "http://localhost/article/video-board-upgrade-for-your-tszx/"
image_gallery:
  - url: "http://localhost/wp-content/uploads/2024/05/JLO-9918-front.jpg"
  - url: "http://localhost/wp-content/uploads/2024/05/JLO-9918-back.jpg"
  - url: "http://localhost/wp-content/uploads/2024/05/JLO-9918-ROM-board-front.jpg"
  - url: "http://localhost/wp-content/uploads/2024/05/JLO-9918-ROM-board-back.jpg"
related_products:
  - id: 56079
    title: "TMS 9918A Video Upgrade ROM"
    type: "computer_media"
    url: "http://localhost/computer_media/tms-9918a-video-upgrade-rom/"
  - id: 56729
    title: "TI Video Software"
    type: "computer_media"
    url: "http://localhost/computer_media/ti-video-software/"
  - id: 58464
    title: "TMS9918A Video Enhanced Basic EPROM Programmer"
    type: "computer_media"
    url: "http://localhost/computer_media/tms9918a-video-enhanced-basic-eprom-programmer/"
companies_products:
  - id: 10990
    title: "John Oliger Co."
    type: "company"
    url: "http://localhost/company/john-oliger-co/"
---

# TMS 9918A Video Upgrade

Two board, extensive upgrade that integrates the [TMS 9918A video display processor](https://en.wikipedia.org/wiki/Texas_Instruments_TMS9918) into the ZX81/TS1000. Provides:

- color
- multiple graphics resolutions, up to 256×192 pixels
- up to 32 sprites
- a SLOW mode almost as fast as FAST mode
- blink free FAST mode
- lower case characters instead of inverse upper case

Interfaces the [TMS 9918A](https://en.wikipedia.org/wiki/Texas_Instruments_TMS9918) color graphics video chip, same as used in the TI 99/4A, Colecovision and MSX computers. Includes ROM that supplements the TS1000 ROM, replacing display routines.