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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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---
title: Casio FX-9000P
categories:
- Computers
types:
- Professional Computer
origins:
- Japan
years:
- '1981'
cpus:
- Z80
params:
name: FX-9000P
company: /companies/casio
company_name: Casio
specs:
- label: NAME
value: FX-9000P
- label: MANUFACTURER
value: Casio
- label: TYPE
value: Professional Computer
- label: ORIGIN
value: Japan
- label: YEAR
value: '1981'
- label: BUILT IN LANGUAGE
value: BASIC interpreter
- label: KEYBOARD
value: 67 keys with numeric keypad and arrows keys
- label: CPU
value: Z80
- label: SPEED
value: 2.75 MHz.
- label: RAM
value: 4 KB expandable to 32 KB
- label: VRAM
value: 4 KB
- label: ROM
value: 12 KB (BASIC interpreter) expandable to 24 KB
- label: TEXT MODES
value: 32 chars. x 16 lines
- label: GRAPHIC MODES
value: 256 x 128 pixels
- label: COLORS
value: Monochrome
- label: SIZE / WEIGHT
value: 41.5(W) x 43(D) x 18.7(H) cm. / 7.2 Kgs
- label: I/O PORTS
value: Tape recorder, Printer, FDD unit
- label: BUILT IN MEDIA
value: C-MOS RAM modules
- label: POWER SUPPLY
value: Built-in power supply unit
- label: PERIPHERALS
value: |-
Option boards OP-1 and OP-2\
Dual 5.25 320 KB FDD unit\
16 KB N-MOS RAM pack ($450)\
4 KB C-MOS RAM pack ($180)
- label: PRICE
value: $1500
tabs:
- photos
- adverts
- hardware
photos:
- title: LARGE VIEW
subtitle: ''
text: User could add/remove up to four ROM/RAM expansion module by lifting up the front cover.
image: null
- title: TOP VIEW
subtitle: ''
text: ''
image: null
- title: RUNNING SYSTEM
subtitle: ''
text: |-
Boot-up screen.\
The BASIC interpreter was close to the one of the future Casio pocket computers. It was the first version allowing to call up to 9 independant programs stored in the same RAM area, through the keys P0 to P9 of the numeric keypad.
image: null
- title: KEYBOARD CLOSE-UP
subtitle: ''
text: Although not mechanical, the keyboard had a good feeling and allowed fast typing.
image: null
- title: MEMORY EXPANSION MODULES
subtitle: ''
text: Up to four modules could be inserted.
image: null
- title: REAR CONNECTORS
subtitle: ''
text: |-
The optional OP-2 expansion unit ($1800) provided the FX-9000 with additional I/O ports. From left to right:\
• Mini-printer connector\
• I/O port, mainly intended for the floppy drives unit\
• Graphic parallel printer connector\
• Tape recorder In, Out, Remote jacks
Two holes allowed to adjust display contrast and brightness with a srewdriver.
image: null
- title: INSIDE
subtitle: ''
text: |-
**(1)** CRT and video electronics\
**(2)** Expansion cards basket\
**(3)** Switching power supply unit\
**(4)** Mainboard
image: null
- title: MAINBOARD
subtitle: ''
text: |-
**(1)** 4 KB static video RAM (8 x 4044 chips)\
**(2)** 12 KB ROM (1x2332, 1x2364 chips). Holds the Basic interpreter and I/O routines\
**(3)** Hitachi HD46505 display controller\
**(4)** Z80 processor, here a Nec D780C version\
**(5)** Keyboard connector\
**(6)** Buzzer
image: null
- title: COMPLETE SYSTEM
subtitle: ''
text: Complete system with dual 5.25" 360 KB floppy drive unit and Epson MX-80 graphic printer (Casio rebadged).
image: null
- title: USER MANUALS
subtitle: ''
text: Spanish version
image: null
- title: DUST COVER
subtitle: ''
text: ''
image: null
adverts:
- title: BROCHURE EXTRACT
subtitle: ''
text: Thanks to Rui Santos for this picture
image: null
hardware:
- title: OP1, MP10 AND MEMORY MODULES
subtitle: ''
text: |-
**OP-1** expansion board (left) provided:\
\- Cassette tape interface\
\- Graphic printer interface\
\- Mini printer (FP-10) interface\
\- I/O bus for OP-2 board and FDD unit\
\- Clock, calendar, alarm function
**MP-10** dot-matrix mini printer:\
\- 20 chars. per line, 2 lines per second.
Memory modules:\
\- **C-4K** 4 KB C-MOS RAM\
\- **C-16K** 16 KB C-MOS RAM\
\- **D-16K** 16 KB Dynamic RAM\
\- **E-4K** Basic language expansion ROM #1 for matrix commands\
\- **E-RFK** Basic language expansion ROM #2 for files control commands.
image: null
- title: LARGE VIEW OF THE OP1
subtitle: ''
text: ''
image: null
comments:
- author: Israel (Barcelona/Spain)
date: Wednesday 7th May 2014
text: I have one PC for send of Casio FX-9000P if somebody want buy it only send me an e-mail oasisrael@gmail.com. thanks
- author: Joscelyn Flores (France)
date: Monday 7th January 2013
text: |-
Here is a short demo of a running FX-9000P : http://www.youtube.com/watch?v$JqWmZtHdsAA
By the way, if someone has the SERVICE manual of this unit, please get in touch : joscelyn.flores@gmail.com
Thanks !
- author: Ren (Earth)
date: Saturday 17th March 2007
text: |-
I learned BASIC on this computer in school... This is who I played with in my free time, no football, no baseball, just me and this machine :D\
Nice memories...
- author: Joscelyn (Paris, France)
date: Thursday 17th July 2003
text: |-
Hi,\
I am interested in this vintage piece of hardware and any options available. Please contact me : jflores@wanadoo.fr - thanks !
- author: Mike (Earth)
date: Thursday 9th January 2003
text: This was actually my home pc. I got it as a gift, and I wrote a Drawing program, a Perpetual calendar program, as well as several math programs including Graphic-Calculator style graphing and a Mandelbrot generator
oc_id: 760
source:
url: https://web.archive.org/web/20230608080130/http://www.old-computers.com/museum/computer.asp?c=760
date: '2023-06-08'
---
This is Casio's first small desktop computer, although the company was well known in Japan for its minicomputer and calculators ranges.
The FX-9000P had a 5.5'' video display and a complete keyboard with calculator style keys. The unit also had four slots for plug-in RAM or ROM modules. The basic model came with 4 KB of RAM. Two RAM modules were available: 16 KB N-MOS RAM which didn't retain information when removed, and 4 KB C-MOS RAM with back-up batteries that stored the information outside the system for three years.
The CA-BASIC interpreter, located in a 12 KB ROM pack, was very close to the FX-702P pocket calculator one, allowing RAM memory to be shared into 9 separate areas (P0-P9). An optional Extended BASIC was also available.
An interface unit was available that plugged into the main housing and provide RS232S and printer interfaces, as well as floppy disc capability (2 x 160 KB).
More info and better pictures needed!
**Rui M. Dos Santos** experience from Angola:\
Around 1981, we ordered and received one CASIO FX9000P for tests and trial.\
This machine arrived at same time the ZX80 and the NEW BRAIN for checking the technology and how things work on PC´s.
We used the FX9000P for tests and the machine was very nice for home and mathematical use but not for any serious commercial application as no CP/M was available.
The way CASIO built the unit in modular mode, was, though very smart... One printer interface was available, one FDD interface was available... We could use the basic machine of add later the interfaces and the printers and FDD´s.
The other nice part on this machine was the memory... It was in plug in cards which kept the all data on them. This way we could store data and programs in multiple cards and use them according to the application. Basic small test applications were made, mainly one full "working clock" with one analogue look.