---
title: "I/O Board"
id: 12890
type: "product"
slug: "i-o-board"
url: "http://localhost/product/i-o-board/"
markdown_url: "http://localhost/product/i-o-board.md"
published_at: "2019-11-30T01:28:19+00:00"
modified_at: "2026-03-22T13:19:43+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "32 line I/O board. Ports mapped to 4 absolute locations. Port A has 8 LED indicators. Port B has 8 outputs. Splits into 2 ways each so one instruction can be used to switch between two peripherals. Port C is uncommitted. A status indicator gives a 16 LED indicator of the state of Port B.…"
category:
  - name: "Interfacing"
    slug: "interfacing"
    taxonomy: "category"
    url: "http://localhost/category/hardware/interfacing/"
post_tag:
  - name: "EPROM Services"
    slug: "eprom-services"
    taxonomy: "post_tag"
    url: "http://localhost/tag/eprom-services/"
  - 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: "Interfacing"
    slug: "interfacing"
    taxonomy: "genre"
    url: "http://localhost/type/interfacing/"
company:
  id: 10856
  title: "EPROM Services"
  type: "company"
  url: "http://localhost/company/eprom-services/"
price: 25
date: 1983
rarity: "Uncommon"
articles:
  - article:
      id: 24415
      title: "Extending Your Computer"
      type: "article"
      url: "http://localhost/article/extending-your-computer/"
companies_products:
  - id: 10856
    title: "EPROM Services"
    type: "company"
    url: "http://localhost/company/eprom-services/"
---

# I/O Board

32 line I/O board. Ports mapped to 4 absolute locations. Port A has 8 LED indicators. Port B has 8 outputs. Splits into 2 ways each so one instruction can be used to switch between two peripherals. Port C is uncommitted. A status indicator gives a 16 LED indicator of the state of Port B. A precision D/A board fits Port C.