---
title: "Using a Large Printer with the TS2050 Modem and Aerco Interface"
type: "article"
slug: "using-a-large-printer-with-the-ts2050-modem-and-aerco-interface"
url: "http://localhost/article/using-a-large-printer-with-the-ts2050-modem-and-aerco-interface/"
markdown_url: "http://localhost/article/using-a-large-printer-with-the-ts2050-modem-and-aerco-interface.md"
published_at: "2026-03-13T23:53:14+00:00"
modified_at: "2026-03-13T23:53:15+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Technique from the T/S Users Group of Cincinnati for redirecting the TS2050 modem's built-in screen-copy routine (normally calling addresses 54025-54026 for the Timex printer) to instead call the Aerco Interface's printer driver at address 64628. Requires specific POKEs (54206,252; 64263,0; 64264,0; 64265,0), reloading just the BASIC modem loader while stopping the tape early, entering CLEAR…"
category:
  - name: "Timelinez"
    slug: "timelinez"
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    url: "http://localhost/category/periodicals/timelinez/"
post_tag:
  - name: "AERCO"
    slug: "aerco"
    taxonomy: "post_tag"
    url: "http://localhost/tag/aerco/"
  - name: "Machine language programming"
    slug: "machine-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/machine-language/"
  - name: "TS 2068"
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model:
  - name: "Timex/Sinclair 2068"
    slug: "ts-2068"
    taxonomy: "model"
    url: "http://localhost/model/ts-2068/"
publication_r:
  id: 21571
  title: "Timelinez"
  type: "periodical"
  url: "http://localhost/periodical/timelinez/"
volume: "2"
issue: "11"
issues_articles:
  - id: 38811
    title: "Timelinez v2 n11"
    type: "issue"
    url: "http://localhost/issue/timelinez-v2-n11/"
pages: "6"
pubdate: "November 1984"
archive_link: false
---

# Using a Large Printer with the TS2050 Modem and Aerco Interface

Technique from the T/S Users Group of Cincinnati for redirecting the TS2050 modem’s built-in screen-copy routine (normally calling addresses 54025-54026 for the Timex printer) to instead call the Aerco Interface’s printer driver at address 64628. Requires specific POKEs (54206,252; 64263,0; 64264,0; 64265,0), reloading just the BASIC modem loader while stopping the tape early, entering CLEAR 54015 and LOAD “aterm” CODE, then adding GOTO 1000 lines and three tape SAVEs. Allows Seikosha GP-100, Gorilla Banana, Star Gemini 10x, or STX-80 printers to work via the modem setup.