---
title: "ASM/DSM"
id: 70086
type: "product"
slug: "asm-dsm"
url: "http://localhost/product/asm-dsm/"
markdown_url: "http://localhost/product/asm-dsm.md"
published_at: "2026-07-12T12:35:22+00:00"
modified_at: "2026-07-12T16:06:24+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "ASM/DSM is a combination Z80 assembler and disassembler. It uses a functional notation, first described in the book Microprocessor Programming and Software Development by F. G. Duncan. This notation allows easier understanding and translation between different processors than the manufacturer's. FUNCTIONS: Assemble source file into executable machine code Disassemble machine code into an editable source…"
category:
  - name: "Software"
    slug: "software"
    taxonomy: "category"
    url: "http://localhost/category/software/"
post_tag:
  - name: "Research Service Labs"
    slug: "research-service-labs"
    taxonomy: "post_tag"
    url: "http://localhost/tag/research-service-labs/"
  - 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/"
media_type:
  - name: "Cassette"
    slug: "cassette"
    taxonomy: "media-type"
    url: "http://localhost/media-type/cassette/"
genre:
  - name: "Machine Language"
    slug: "machine-language"
    taxonomy: "genre"
    url: "http://localhost/type/machine-language/"
  - name: "Software"
    slug: "software"
    taxonomy: "genre"
    url: "http://localhost/type/software/"
company:
  id: 27855
  title: "Research Service Labs"
  type: "company"
  url: "http://localhost/company/research-service-labs/"
media_types:
  - name: "Cassette"
    slug: "cassette"
    taxonomy: "media-type"
    url: "http://localhost/media-type/cassette/"
price: 40
date: 1984
rarity: "Uncommon"
companies_products:
  - id: 27855
    title: "Research Service Labs"
    type: "company"
    url: "http://localhost/company/research-service-labs/"
---

ASM/DSM is a combination Z80 assembler and disassembler. It uses a functional notation, first described in the book *Microprocessor Programming and Software Development*by F. G. Duncan.

This notation allows easier understanding and translation between different processors than the manufacturer’s.

FUNCTIONS:

- Assemble source file into executable machine code
- Disassemble machine code into an editable source file
- Save source files or machine code to tape
- Load source files or machine code from tape
- Edit source file

FEATURES:

- Fully interactive — checks syntax as lines are entered
- Both assembler and disassembler in one package
- Very fast assembly — assembles 4K in seconds
- Disassembles machine code into an editables source file
- Allows special characters in labels Uses 64 column mode — TS2068 only
- FULL manual included