---
title: "Analog-to-Digital Sampling Routine for the TS1000"
type: "article"
slug: "analog-to-digital-sampling-routine-for-the-ts1000"
url: "http://localhost/article/analog-to-digital-sampling-routine-for-the-ts1000/"
markdown_url: "http://localhost/article/analog-to-digital-sampling-routine-for-the-ts1000.md"
published_at: "2026-03-15T01:05:48+00:00"
modified_at: "2026-03-15T01:05:49+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "An 8-byte Z80 machine code routine stored in a REM line for use with the ZEBRA Analog-to-Digital converter, suitable for low-speed sampling (once every several seconds). The disassembled code reads a specified port, delays for A-to-D conversion, and returns the result in the accumulator. A sample 10-reading BASIC wrapper is included."
category:
  - name: "Timex Sinclair Users Group Mile High Chapter Newsletter"
    slug: "timex-sinclair-users-group-mile-high-chapter-newsletter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/timex-sinclair-users-group-mile-high-chapter-newsletter/"
post_tag:
  - name: "Machine language programming"
    slug: "machine-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/machine-language/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "Frank Holland"
    slug: "frank-holland"
    taxonomy: "indiv"
    url: "http://localhost/indiv/frank-holland/"
publication_r:
  id: 39264
  title: "Timex Sinclair Users Group Mile High Chapter Newsletter"
  type: "periodical"
  url: "http://localhost/periodical/timex-sinclair-users-group-mile-high-chapter-newsletter/"
authors_r:
  - name: "Frank Holland"
    slug: "frank-holland"
    taxonomy: "indiv"
    url: "http://localhost/indiv/frank-holland/"
issues_articles:
  - id: 50283
    title: "Timex Sinclair Users Group Mile High Chapter Sep 1987"
    type: "issue"
    url: "http://localhost/issue/timex-sinclair-users-group-mile-high-chapter-sep-1987/"
pages: "3"
pubdate: "Sep 1987"
archive_link: false
---

An 8-byte Z80 machine code routine stored in a REM line for use with the ZEBRA Analog-to-Digital converter, suitable for low-speed sampling (once every several seconds). The disassembled code reads a specified port, delays for A-to-D conversion, and returns the result in the accumulator. A sample 10-reading BASIC wrapper is included.