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FM-7

From Wikipedia, the free encyclopedia
1982 Fujitsu home computer
For other uses, seeFM7.
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FM-7
ManufacturerFujitsu
TypePersonal Computer
Release dateNovember 1982; 42 years ago (1982-11)
Introductory price¥126,000 ($500)
DiscontinuedApril 1984 (1984-04) (original model)[1]
Units sold220,000 (original model)[1]
MediaCassette tape, 514-inchfloppy disk
Operating systemFujitsu Disk Basic,OS-9,FLEX
CPUMBL 68B09 clocked at 2MHz
Memory64KBRAM, 48KBVRAM, 48KBROM
Display8 colours at 640 × 200 pixel resolution
GraphicsMBL 68B09
SoundAY-3-8910, YM2203 (FM77AV onwards)
InputKeyboard,joystick
Dimensions43.2 × 28.5 × 10.2
Weight4.5 kg
PredecessorFM-8
SuccessorFM Towns

TheFM-7 ("Fujitsu Micro 7") is ahome computer created byFujitsu.[2][3] It was first released in 1982 and was sold inJapan andSpain.[4] It is a stripped-down version of Fujitsu's earlierFM-8 computer,[2] and during development it was referred to as the "FM-8 Jr.".

Although it was designed to be a cut-down version of the FM-8 (with the FM-7 costing 126,000yen, compared to 218,000 yen for the FM-8[2][5]), most notably removing the (expensive)bubble memory technology, the FM-7 was given a more advancedAY-3-8910 sound chip capable of three voice sound synthesis, leading to a strong uptake among the hobbyist computer market in Japan and making it a more popular system than the FM-8.

The FM-7 primarily competed with theNEC PC-8801 andSharp X1 series of computers in the early 1980s. It was succeeded by the FM-77 series of computers in 1984, which featured backwards compatibility with the FM-7. The FM-77 series was later succeeded by the 32-bitFM Towns in 1989.

The FM-7 is based around the6809 chip, which was also used in home computers such as theTRS-80 Color Computer andDragon 32/64, as well as severalarcade games.

Hardware

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  • TwoMC 68B09 CPUs @ 2 MHz: one mainCPU and one graphics processor.
  • Screen resolution: 640×200, 8 colors
  • Memory: 40KBROM, 64KBRAM
  • Sound: 3-channel (AY-3-8910)PSG chip, built-in speaker mounted near the top of the unit. From FM77AV onwards, the system includes the 6-channelYM2203 (3 PSG channels + 3 FM channels, making it a total of six).
  • Interfaces:RS-232, monitor andCentronics ports, 3 expansion slots.
  • Storage: 5.25"floppy disk
  • Operating system:OS-9 (compatible withColor Computer)[6][7]
  • Three slots for optional plug-in cards, including aZ-80 CPU and additionalRS-232 ports.
  • Full-size keyboard, with keys handling multiple functions (as many as 5, depending on what SHIFT/KANA/GRAPH/etc key is pressed).
  • 10 Function Keys at the top, pre-programmed with shortcuts (LIST, etc.).
  • Numeric keypad (on right) and cursor-control keys (upper-right).

F-BASIC

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The included "F-BASIC" is an enhanced version of theColor BASIC language used on the TRS-80 Color Computer. Changes include a different character set that includeskatakana and a fewkanji, the ability to have graphics appear on the default text screen, and several new commands such asBEEP,CONNECT,MON,SYMBOL,INTERVAL,MERGE,RANDOMIZE,SWAP, andTERM. There are also strings forTIME$ andDATE$, which access a temporary built-in internal clock, though if the power is turned off, the time and date are lost.

While F-Basic has commands that Color BASIC does not, most commands featured in both versions of the language operate in exactly the same fashion.

While the BASICEDIT command works the same as on Color BASIC, the cursor position is important on the FM-7: there is a small keypad on the upper-right of the FM-7 with cursor-control keys (arrows, INSERT & DELETE), and wherever the user decides to position the cursor, it will move it there and affect whatever is underneath it.

Both Microsoft and Fujitsu share the copyright on theBASIC.

Spain

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The FM-7 was sold in Spain as theSecoinsa FM-7. Secoinsa was a electronics supplier toTelefonica, the main Spanish telecom, and was eventually transformed into Fujitsu Spain. It retained an independent R&D department until Fujitsu's 1990 acquisition ofICL.[8] Secoinsa adapted the FM-7 for the Spanish market and specifically for the Spanish government's push towards computers in school, the "Athena Project".[9]

Models

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There were several models of the computer:

  • 1982 – FM-7: M68B09, RAM 64 KB, ROM 48 KB, VRAM 48 KB, 640×200, 8 colors
  • 1984 – FM-NEW7: M68B09 integrated memory and LSI chip (cheap production). The features are the same as the FM-7.
  • 1984 – FM77: M68B09E, RAM 64 KB (max 256 KB), VRAM 48 KB
  • 1985 – FM77L2, M68B09E
  • 1985 – FM77L4, M68B09E
  • 1985 – FM77AV: M68B09E, RAM 128 KB (max 192 KB), ROM 48 KB, VRAM 96 KB, 640×200 (8 colors), 320×200 (4096 colors), 4096 colors, 1 (AV-1) or 2 (AV-2) floppy 3.5-inch 320 KB
  • 1986 – FM77AV20: M68B09E, like FM77AV but has floppy 640 KB
  • 1986 – FM77AV40: M68B09E, like FM77AV20 but has RAM 192 KB (max 448 KB), VRAM 144 KB to support 320×200 (262144 colors)
  • 1987 – FM77AV20EX: M68B09E, RAM 128 KB (max 192 KB), VRAM 96 KB, 640x400
  • 1987 – FM77AV40EX: M68B09E, RAM 192 KB (max 448 KB), VRAM 144 KB, 640x400
  • 1988 – FM77AV40SX: M68B09E, RAM 192 KB (max 448 KB), VRAM 144 KB

References

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  1. ^ab小林紀興 (1987).富士通の大逆襲計画 [The big counterattack plan by Fujitsu] (in Japanese). 講談社. p. 95.ISBN 4061928074.
  2. ^abc"FM-7 (1982)".Fujitsu Global. Retrieved2022-12-06.
  3. ^"FM 7 Fujitsu".www.old-computers.com. Retrieved2022-12-06.
  4. ^Campos, Daniel."Fujitsu FM-7: O "CoCo japonês" ? | AMX PROJECT" (in European Portuguese). Retrieved2022-12-06.
  5. ^"FM-8 (1981)".Fujitsu Global. Retrieved2022-12-06.
  6. ^Larry Green (2005-04-08)."The Fujitsu Micro FM7 - Larry Green's Homepage at Nausicaä.net". Archived fromthe original on 2017-12-28. Retrieved2009-03-02.
  7. ^"Fujitsu Micro 7 - Retrocomputing".www.roug.org. Retrieved2022-12-06.
  8. ^"Fujitsu / Secoinsa FM-7" (in Spanish).
  9. ^"Athena in Castille" - Educational Computing in Spanish Schools; Dieuzeide, Henri; The OECD Observer; Paris Iss. 175 (Apr/May 1992): 13.

External links

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  • 1Now integrated into other Fujitsu divisions or business groupings
  • 2Now wholly owned
  • 3Sold
  • 4Spun off
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