website/content/museum/sharp-x1-d-cz-802c.md

---
title: Sharp X1-D (CZ-802C)
categories:
- Computers
types:
- Home Computer
origins:
- Japan
years:
- '1983'
cpus:
- Sharp Z80 A
params:
  name: X1-D (CZ-802C)
  company: /companies/sharp
  company_name: Sharp
  specs:
  - label: NAME
    value: X1-D (CZ-802C)
  - label: MANUFACTURER
    value: Sharp
  - label: TYPE
    value: Home Computer
  - label: ORIGIN
    value: Japan
  - label: YEAR
    value: '1983'
  - label: KEYBOARD
    value: Full-stroke keyboard
  - label: CPU
    value: Sharp Z80 A
  - label: SPEED
    value: 4 MHz
  - label: RAM
    value: 64 KB
  - label: VRAM
    value: 48 KB
  - label: ROM
    value: 6 KB
  - label: TEXT MODES
    value: 40 / 80 x 25
  - label: GRAPHIC MODES
    value: 320 x 200 / 640 x 200
  - label: COLORS
    value: '8'
  - label: SOUND
    value: 3 voices PSG
  - label: SIZE / WEIGHT
    value: Unknown
  - label: I/O PORTS
    value: 2 x I/O ports, 2 x joysticks (Atari), audio out, keyboard, printer
  - label: BUILT IN MEDIA
    value: 3'' FDD (320 KB)
  - label: OS
    value: S-OS
  - label: POWER SUPPLY
    value: Built-in PSU
  - label: PRICE
    value: 198,000 yen (Japan, 1983)
  tabs:
  - photos
  - hardware
  - links
  - videos
  photos:
  - title: SINGLE FDD VERSION
    subtitle: ''
    text: ''
    image: null
  - title: DUAL FDD VERSION
    subtitle: ''
    text: ''
    image: null
  - title: TOP VIEW
    subtitle: ''
    text: ''
    image: null
  - title: 'SYSTEM CLOSE-UP #1'
    subtitle: ''
    text: ''
    image: null
  - title: 'SYSTEM CLOSE-UP #2'
    subtitle: ''
    text: 'The five silver keys allow the TV/monitor to be operated from the computer keyboard: chanel selection, volume adjustment and TV/monitor switch.'
    image: null
  - title: BACK SIDE
    subtitle: ''
    text: |-
      **(1)** Power supply's fan\
      **(2)** RGB video input plug\
      **(3)** Computer RGB video out DIN plug (connected to **(2)**)\
      **(4)** TV control DIN plugs. Allow the TV to be operated from the computer keyboard\
      **(5)** Optional I/O card connector\
      **(6)** External floppy disc unit connector\
      **(7)** Composite video and audio IN/OUT chinch jacks\
      **(8)** Parallel printer connector\
      **(9)** volume control knob\
      **(10)** Audio output chinch jack\
      **(11)** Reset switch\
      **(12)** 2 x joystick DB9 connectors (Atari compatible)\
      **(13)** Tape recorder DIN plug\
      **(14)** Keyboard jack. A second keyboard jack is located in front of the CPU unit
    image: null
  - title: CASE OPENED
    subtitle: ''
    text: The expansion box is fitted with the I/O card **(1)**, and two 64 KB RAM cards **(2)**.
    image: null
  - title: MAINBOARD
    subtitle: ''
    text: |-
      **(1)** Switching power supply unit\
      **(2)** Connector for 48 KB video RAM card\
      **(3)** Floppy disc controller chip\
      **(4)** Floppy disk drives connector\
      **(5)** Built-in expansion box connector\
      **(6)** Z80A microprocessor\
      **(7)** IPL (Initial Program Loader) ROM\
      **(8)** Front keyboard jack\
      **(9)** 3 voices sound generator AY-8910\
      **(10)** I/O chips (8255)\
      **(11)** Video ROM and text mode RAM chips\
      **(12)** Sharp video custom chip\
      **(13)** Basic 64 KB RAM chips (8 x Fujitsu 8265)
    image: null
  hardware:
  - title: TOP VIEW
    subtitle: ''
    text: This original extension was at least usable with the X1 Turbo serie...
    image: null
  - title: I/O EXPANSION BOX
    subtitle: ''
    text: This box was used to multiply the input/output connectors and thus, possibilities of the X1 systems.
    image: null
  - title: FRONT
    subtitle: ''
    text: ''
    image: null
  - title: BACK
    subtitle: ''
    text: This extension box offers 4 I/O ports.
    image: null
  - title: FRONT
    subtitle: ''
    text: This extension was used to generate titles for video-tapes, among other things...
    image: null
  - title: BACK
    subtitle: ''
    text: A lot of connectors can be found at the back of the unit...
    image: null
  - title: FRONT
    subtitle: ''
    text: ''
    image: null
  links:
  - title: Class X1
    url: http://www2s.biglobe.ne.jp/~ITTO/x1/x1menu.html
    text: In Japanese
  - title: Japanese Computer Emulation Center
    url: http://www.jcec.co.uk/x1games.htm
    text: Lot of games for X1
  videos:
  - title: Sharp X1 japanese commercial
    url: https://www.youtube.com/watch?v=7QxhgniF8Pg
    text: 'Length: 15 s'
  comments:
  - author: stevyn ironfeather (Japan)
    date: Wednesday 13rd October 2021
    text: SHARP CZ-802C Spotted at the Shikaoi Hokkaido Japan library October 2021 https://ironfeather.com/bbs/download/file.php?id$732$mode$view welcome to use the photo. can investigate more
  - author: Roger Jowett (Ulster Londonderry)
    date: Saturday 6th April 2013
    text: |-
      http://www.youtube.com/watch?v$zsjTpFR0oYQ

      please help we have zx spectrum 48k and one 128k program running at 6mhz using external ram and snapper discs from velesoft site
  related:
  - /museum/sharp-x1-c-cz-801c
  - /museum/sharp-x1-ck-cz-804c
  - /museum/sharp-x1-cs-cz-803c
  - /museum/sharp-x1-cz-800c
  - /museum/sharp-x1-turbo
  - /museum/sharp-x1-turbo-iii
  - /museum/sharp-x1-turbo-z-cz-880c
  - /museum/sharp-x1-turbo-z-iii
  oc_id: 316
  source:
    url: https://web.archive.org/web/20230608141834/http://www.old-computers.com/museum/computer.asp?c=316
    date: '2023-06-08'
---

The X1-D is based on the [Sharp X1](/museum/sharp-x1-cz-800c/).

The most famous and strong feature of the X1 series is Programmable Charactor Generator (PCG).

The X1-D has a 3" disk drive built-in instead of the tape recorder of the original X1 system. The X1-D lacks the tape interface remote control of the X1 serie, so most tape software couldn't be used with it.

This incompatibility with the others X1 systems was a big flaw, but a clever user (japanese of course) modified its X1D board to make it compatible, and named his new computer X1DX for "Deluxe". Many other users followed him and did the same...

Tape Basic and Disk Basic were available but had to be loaded from disk (Sharp's "clean computer" concept).

The "S-OS" operating system was created by monthly magazine "Oh! MZ" (Soft bank publishing) in 1984. "S-OS" committee designed commom IOCS specs. to be able to share application programs among diffrent systems. S-OS have been converted to all MZ series, MSX ,PC-8800 series,FM-7 series and X68000 with backing support of many readers who created many application & games on "S-OS".

<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>