---
title: "Z-SI/O Serial Interface"
type: "article"
slug: "z-si-o-serial-interface"
url: "http://localhost/article/z-si-o-serial-interface/"
markdown_url: "http://localhost/article/z-si-o-serial-interface.md"
published_at: "2022-10-07T12:27:30+00:00"
modified_at: "2026-08-09T14:30:38+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "To put it simply, the Z-SI/0 Card is the best RS-232C I/F available for your T/S2068 at ANY PRICE. This rugged, well made card, which plugs directly into the expansion port of 2068, will allow you to operate any computer peripherals your that require a serial (RS-232) port on your computer. This includes printers and…"
category:
  - name: "Nite-Times News"
    slug: "nite-times-news"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/nite-times-news/"
post_tag:
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - 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/"
indiv:
  - name: "Ed Grey"
    slug: "ed-grey"
    taxonomy: "indiv"
    url: "http://localhost/indiv/ed-grey/"
publication_r:
  id: 10206
  title: "Nite-Times News"
  type: "periodical"
  url: "http://localhost/periodical/nite-times-news/"
authors: "Ed Grey"
volume: "1"
issue: "3"
issues_articles:
  - id: 39275
    title: "Nite-Times News v1 n3"
    type: "issue"
    url: "http://localhost/issue/nite-times-news-v1-n3/"
pages: "1-2"
pubdate: "April 1987"
archive_link: false
---

# Z-SI/O Serial Interface

To put it simply, the Z-SI/0 Card is the best RS-232C I/F available for your T/S2068 at ANY PRICE. This rugged, well made card, which plugs directly into the expansion port of 2068, will allow you to operate any computer peripherals your that require a serial (RS-232) port on your computer. This includes printers and plotters and modems.

The Z-SI/0 provides a “real” RS-232 connector (DB-25) and feeds through ALL of the BUSS lines available on the rear of your 2068. Couple the Z-SI/O card together with an RS-232 1200 baud modem and SPECTERM-64 software and you will be amazed.

As of press time there are two versions of the Z-SI/O, one is compatible with the JLO Disk System, and one for everything else. When ordering, please list your peripherals so that we can assure compatibility.

The Z-SI/0 employs the Intel type 8251 USART and supports baud rates (300, 1200, 19200) via software control. The ‘STOCK’ Z-SI/0 uses port 9F hex DATA port BF hex for CONTROL/STATUS and the JLO DISK version of the Z-SI/0 card uses port D7 hex for DATA and port DF hex for CONTROL/STATUS.

The Z-SI/O is sold with extensive documentation (a 25+ page user manual) for only $79.00 Plus $3.50 S&H minimum). For (CANADA $6.00 S&H more information, write to Grey & Clifford Computer Products, P.O. Box #2186, Inglewood, CA 90305