---
title: "Dual Centronics Interface"
id: 38188
type: "product"
slug: "dual-centronics-interface"
url: "http://localhost/product/dual-centronics-interface/"
markdown_url: "http://localhost/product/dual-centronics-interface.md"
published_at: "2022-01-06T00:38:26+00:00"
modified_at: "2026-03-22T13:12:56+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Port-mapped expansion board using the Intel 8255 PIA chip. Provides two Centronics ports, one for output to a printer, the other for data input. A 32 byte PROM overrides ROM printer routines and directs the commands to driver software. Fully supports BASIC LPRINT, LLIST and COPY statements. Driver software loads above RAMTOP but can be…"
category:
  - name: "Printer"
    slug: "printer"
    taxonomy: "category"
    url: "http://localhost/category/hardware/printer/"
post_tag:
  - name: "EPROM Services"
    slug: "eprom-services"
    taxonomy: "post_tag"
    url: "http://localhost/tag/eprom-services/"
  - name: "Integrated Data Systems"
    slug: "integrated-data-systems"
    taxonomy: "post_tag"
    url: "http://localhost/tag/integrated-data-systems/"
  - 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: "Printer"
    slug: "printer"
    taxonomy: "genre"
    url: "http://localhost/type/printer/"
company:
  id: 10856
  title: "EPROM Services"
  type: "company"
  url: "http://localhost/company/eprom-services/"
price: 89
date: 1985
rarity: "Uncommon"
companies_products:
  - id: 10856
    title: "EPROM Services"
    type: "company"
    url: "http://localhost/company/eprom-services/"
  - id: 10955
    title: "Integrated Data Systems"
    type: "company"
    url: "http://localhost/company/integrated-data-systems/"
---

# Dual Centronics Interface

Port-mapped expansion board using the Intel 8255 PIA chip. Provides two Centronics ports, one for output to a printer, the other for data input. A 32 byte PROM overrides ROM printer routines and directs the commands to driver software. Fully supports BASIC LPRINT, LLIST and COPY statements.

Driver software loads above RAMTOP but can be relocated to work in REM or in 8-16K block. Translation options translate inverse characters to upper or lower case.

Interface is supplied with a T-dock connector, allowing piggybacking of RAM and other peripherals.