---
title: Quasar Data Products QDP-100
categories:
- Computers
types:
- Professional Computer
origins:
- U.S.A.
years:
- '1982'
cpus:
- Z80
params:
  name: QDP-100
  company: /companies/quasar-data-products
  company_name: Quasar Data Products
  specs:
  - label: NAME
    value: QDP-100
  - label: MANUFACTURER
    value: Quasar Data Products
  - label: TYPE
    value: Professional Computer
  - label: ORIGIN
    value: U.S.A.
  - label: YEAR
    value: '1982'
  - label: KEYBOARD
    value: Optional serial video terminal
  - label: CPU
    value: Z80
  - label: SPEED
    value: 4 - 6 Mhz.
  - label: RAM
    value: 64 KB
  - label: ROM
    value: Unknown
  - label: TEXT MODES
    value: Unknown
  - label: GRAPHIC MODES
    value: Unknown
  - label: COLORS
    value: Unknown
  - label: SOUND
    value: Unknown
  - label: SIZE / WEIGHT
    value: unknown
  - label: I/O PORTS
    value: Serial and Parallel ports
  - label: BUILT IN MEDIA
    value: 1 or 2 x 8'' floppy drives (1.2 MB each) - Optional 10 MB hard disk
  - label: OS
    value: CP/M or MP/M
  - label: POWER SUPPLY
    value: Built-in P.S.U.
  - label: PERIPHERALS
    value: S-100 boards
  - label: PRICE
    value: $4,995 (two floppy disk version)
  tabs:
  - adverts
  adverts:
  - title: US ADVERT (APRIL 1982)
    subtitle: ''
    text: ''
    image: null
  - title: U.S. ADVERT (1982)
    subtitle: ''
    text: |-
      The advert show the built-in user menu and system status.

      The right located system is the dual-drive version.\
      The left one is the 10 MB hard-disk version.
    image: null
  oc_id: 594
  source:
    url: https://web.archive.org/web/20230603013150/http://www.old-computers.com/museum/computer.asp?c=594
    date: '2023-06-03'
---

The S-100 Bus was an universal standard for computer cards. It was adopted by dozens manufacturers between 1975 and 1983.

To differentiate themselves from other competitors, each manufacturer tried to add an original idea in their new machines. For the QPD-100, it was a start-up menu displayed when the machine was turned on, which allowed users to easily modify operating system parameters or run various utilities and applications.

Apart from this menu, the system was a standard S-100 based computer with a 4-6 Mhz Z80 microprocessor card. It was sold with one or two 8" floppy drives and an optional 10 MB hard disk running under a CP/M or MP/M operating system.

This first version was followed by the **QDP-200** and [QDP-300](/museum/quasar-data-products-qdp-300/) series but we have little information about them at the moment.

<table> <tr> <td></td> <td>We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.</td> <td></td> </tr> </table>