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yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import) 
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-13 17:26:43 +02:00

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---
title: Spectravideo SVI 728
categories:
- Computers
types:
- Home Computer
origins:
- U.S.A.
years:
- '1984'
cpus:
- Zilog Z80
params:
name: SVI 728
image: /media/museum/photos/spectravideo_svi728_3.jpg
company: /companies/spectravideo
company_name: Spectravideo
specs:
- label: NAME
value: SVI 728
- label: MANUFACTURER
value: Spectravideo
- label: TYPE
value: Home Computer
- label: ORIGIN
value: U.S.A.
- label: YEAR
value: May 1984
- label: BUILT IN LANGUAGE
value: Microsoft Extended Basic (MSX Basic V1.0)
- label: KEYBOARD
value: |-
QWERTY, mechanical enhanced keyboard\
Numeric keypad, 90 keys
- label: CPU
value: Zilog Z80
- label: SPEED
value: 3.58 MHz
- label: CO-PROCESSOR
value: |-
VDP Texas Instruments TMS9929A (PAL/SECAM)\
VDP Texas Instruments TMS9918A (NTSC)
- label: RAM
value: 64 kb (max. 144 kb)
- label: VRAM
value: 16 kb
- label: ROM
value: 32 kb (max. 96 kb)
- label: TEXT MODES
value: |-
Mode 0 : 40 x 24\
Mode 1 : 32 x 24
- label: GRAPHIC MODES
value: |-
Mode 2 : 256 x 192 with 16 colors (Hires mode)\
Mode 3 : 64 x 48 with 16 colors (Multi colour mode)\
32 sprites
- label: COLORS
value: '16'
- label: SOUND
value: |-
General Instruments AY-3-8910 Programmable Sound Generator\
3 channels, 8 octaves
- label: I/O PORTS
value: |-
2 joystick sockets\
1 cardridge slot\
Tape-recorder (Specialised interfaced, 2400 bps)\
RGB & Monitor video output\
Centronics port
- label: OS
value: MSX DOS
- label: PRICE
value: |-
532 (France, january 85)\
452 (France, august 85)
tabs:
- photos
- adverts
- hardware
- emulators
- links
forum_thread: 239
photos:
- title: SVI 728
subtitle: ''
text: ''
image: /media/museum/photos/spectravideo_svi-728_3.jpg
- title: ANOTHER PICTURE
subtitle: ''
text: ''
image: /media/museum/photos/spectravideo_svi_728.jpg
adverts:
- title: NEW-ZEALAND ADVERT (OCT. 1985)
subtitle: ''
text: from Bits & Bytes magazine...
image: null
hardware:
- title: SOME EXTENSIONS
subtitle: RAM expansion and Disk Drive
text: This is a SVI-728 with the SVI-707 5"1/4 Disk Drive (double sided, double density, 40 tracks), a SVI-747 64kb RAM extension and another one...
image: /media/museum/hardware/spectravideo_svi728_extensions.jpg
- title: SVI-767
subtitle: Tape-recorder
text: ''
image: /media/museum/hardware/spectravideo_svi767-taperecorder_1.jpg
- title: SVI-787
subtitle: 3.5'' disk drive
text: This drive is a 3.5", single-sided, double-density, 80-track drive and was produced in 1985.
image: /media/museum/hardware/spectravideo_svi787_1.jpg
- title: NATIONAL CF-2131
subtitle: 16 KB RAM expansion
text: ''
image: /media/museum/hardware/national_cf2131_16k-cart.jpg
- title: CASIO OR-216 - 16 KB RAM EXPANSION
subtitle: Box
text: ''
image: /media/museum/hardware/casio_or216_16kbramexpansion_box.jpg
- title: PHILIPS RAM EXPANSION
subtitle: ''
text: |-
RAM expansion and LOGO language cartridges.
Thanks to Daniele from Italy
image: /media/museum/hardware/philips_vg8020_cartridges_s1.jpg
- title: MEGA RAM DISK 256
subtitle: from DDX (Brazil)
text: This is the famous Megaram cartridge made in Brzail, used to play all Konami cracked Megarom games.6401999243
image: /media/museum/hardware/msx_megaram256-ddx_1.jpg
- title: PANASONIC FS-IFA1 & FW-RSU1W
subtitle: Scanner/Printer interface
text: The FS-IFA1 is the printer/scanner interface (left on the picture) and the FW-RSU1W is the handheld scanner (right on the picture). These expansions are for MSX2 systems.
image: /media/museum/hardware/msx_fs-ifa1_fw-rsu1w.jpg
- title: SONY HBI-232
subtitle: RS232c cartridge
text: Used to connect serial printers.
image: /media/museum/hardware/sony_msx_rs232c-cartridge.jpg
- title: 'YAMAHA MOUSE #1'
subtitle: ''
text: |-
This mouse was compatible with all MSX systems. It connects to the first Joystick port.
Thanks to **www.zonadepruebas.com**
image: /media/museum/hardware/yamaha_mouse_s2.jpg
- title: 'YAMAHA MOUSE #2'
subtitle: ''
text: |-
Brand new!
Thanks to **www.zonadepruebas.com**
image: /media/museum/hardware/yamaha_mouse_s1.jpg
- title: PHILIPS VW0020
subtitle: 80-col dot-matrix printer
text: |-
This printer was a rebadged version of the Seikosha GP-500.\
It was a 80-column, 50 CPS model with a 7x5 dot matrix head.\
Commodore and Atari used same hardware basis for their MPS-801 and 1029 printers.
image: /media/museum/hardware/philips_vg8020_printervw0020_s1.jpg
- title: SANYO PHC-DR II
subtitle: Side
text: ''
image: /media/museum/hardware/sanyo_phc-drii_side_1.jpg
- title: SANYO PHC-DR II
subtitle: Front
text: ''
image: /media/museum/hardware/sanyo_phc-drii_front_1.jpg
- title: SANYO DR-202
subtitle: ''
text: The ADSS system allowed to quickly search a specific program in a cassette tape and load it. Seach time for a C60 cassette was less than 1 minute.
image: /media/museum/hardware/sanyo_phc28_dr202tapedrive_s1.jpg
- title: NATIONAL RQ-8030
subtitle: tape-recorder
text: ''
image: /media/museum/hardware/national_tape_rq8030.jpg
- title: BIT-CORDER
subtitle: ''
text: Cassete recorder dedicated to Hit-Bit MSX systems, though it could be used with any home computers.
image: /media/museum/hardware/sony_hb201_bitcorder_1.jpg
emulators:
- title: fMSX for MS DOS Homepage
url: http://www.komkon.org/~dekogel/fmsx.html
platform: MS DOS
text: ''
- title: BlueMSX
url: http://www.bluemsx.com/
platform: Windows
text: Excellent free MSX emulator
- title: BrMSX
url: http://www.lsi.usp.br/~ricardo/brmsx.htm
platform: Windows
text: A Bresilian MSX Emulator written in 100% assembler
- title: CompuJunk's MSX Emulator
url: http://ftp.castel.nl/msx/
platform: Windows
text: A MSX1 and MSX2 Emulator
- title: RuMSX
url: http://members.eunet.at/lexlechz/msx.html
platform: Windows
text: A MSX Emulator for Win95 and Win NT + Direct X
- title: fMSX for MAC OS Homepage
url: http://www.emulation.net/msx/index.html
platform: Apple
text: ''
- title: fMSX official Homepage
url: http://www.komkon.org/fms/fMSX
platform: Multiplatform
text: 'fMSX is a portable MSX emulator ported on : Amiga OS, Mac OS, MS DOS, OS/2, Sony Playstation, Risc OS, Towns OS, Unix / X, Win95 / NT, X68K.'
- title: openMSX - The MSX emulator that aims for perfection.
url: http://openmsx.sourceforge.net/
platform: Multiplatform
text: This new MSX emulator can reproduce, among many other MSX, MSX2and MSX2+ machines, both Panasonic Turbo-R models. Be sure to get the catapult frontend and the system roms from FUNET.
links:
- title: Baboo!
url: http://www.baboo.net/baboo.shtml
text: MSX dedicated Yahoo clone. Essential !
- title: FILE-HUNTER.COM
url: http://www.file-hunter.com/
text: Excellent! All MSX emulators, sources and utilities!
- title: FTP da MSXBr-L/MSX.Org.Br
url: http://www.caetano.eng.br/msxsoft/
text: Excellent brasilian software archive
- title: MOAI TECH
url: http://www.moai-tech.com/
text: Spanish/English website with interesting content
- title: MSX Hardware List
url: http://www.faq.msxnet.org/hardware.html
text: An impressive list of MSX hardware. The Bible !!!
- title: MSX Ressource Center
url: http://www.msx.org/
text: Essential site !
- title: Possi's Konami MSX Page
url: http://dynamo.geol.msu.ru/MSX/
text: Nice page dedicated to all Konami MSX games (roms, scans, mids, etc.)
- title: The MSX Games Box
url: http://www.msxgamesbox.com
text: All about MSX gaming (games, covers.etc.). More Fun, Less Mhz!
- title: The MSX Museum BOX
url: http://www.msxmuseumbox.com
text: More than 190 different MSX models in pictures.
- title: The ultimate MSX Faq
url: http://www.faq.msxnet.org
text: Here, you can find near all hardware pieces related to MSX.
- title: Web Wiz CAPTCHA
url: http://www.webwizcaptcha.com
text: The MSX home computer system
related:
- /museum/canon-v-10
- /museum/canon-v-20
- /museum/canon-v-8
- /museum/casio-mx-10-mx-101
- /museum/casio-pv-16
- /museum/casio-pv-7
- /museum/epcom-sharp-hotbit-hb-8000
- /museum/fujitsu-fm-x
- /museum/general-paxon-pct-50
- /museum/goldstar-fc-80-fc-200
- /museum/gradiente-expert-plus
- /museum/gradiente-expert-xp-800
- /museum/hitachi-ah-200
- /museum/hitachi-h1-h1e
- /museum/hitachi-h2
- /museum/mitsubishi-ml-f110-ml-f120
- /museum/mitsubishi-ml-f48-ml-f80
- /museum/mitsubishi-ml-fx1-fx2
- /museum/mitsubishi-ml-g10
- /museum/msx-1
- /museum/national-cf-2000
- /museum/national-cf-2700
- /museum/national-cf-3000
- /museum/national-fs-4000
- /museum/national-fs-4500
- /museum/olympia-phc-2
- /museum/panasonic-cf-2700
- /museum/philips-nms-801
- /museum/philips-vg-8000-8010
- /museum/philips-vg-8020
- /museum/philips-vg-8235
- /museum/pioneer-palcom-px-7
- /museum/sanyo-mpc-100
- /museum/sanyo-phc-28
- /museum/sanyo-phc-30
- /museum/sanyo-phc-33
- /museum/sanyo-wavy-10-mpc-10
- /museum/sanyo-wavy-23
- /museum/sanyo-wavy-3
- /museum/schneider-philips-mc-810
- /museum/sony-hit-bit-10
- /museum/sony-hit-bit-101
- /museum/sony-hit-bit-20
- /museum/sony-hit-bit-201
- /museum/sony-hit-bit-501
- /museum/sony-hit-bit-55
- /museum/sony-hit-bit-75
- /museum/toshiba-hx-10-pasopia-iq
- /museum/toshiba-hx-20-hx-21-pasopia-iq
- /museum/toshiba-hx-52
- /museum/victor-hc-6
- /museum/yamaha-cx5
- /museum/yamaha-cx5m-music-computer
- /museum/yamaha-sx-100
- /museum/yamaha-yis-303
- /museum/yamaha-yis-503-diabolik
- /museum/yashica-yc-64
- /museum/yeno-dpc-64
- /museum/yeno-mx-64
oc_id: 229
source:
url: https://web.archive.org/web/20230609172057/http://www.old-computers.com/museum/computer.asp?c=229
date: '2023-06-09'
---
Spectravideo was the only american MSX manufacturer, but they were later bought back by their manufacturer based in Hong-Kong.
For their first computers, the [SV-318](/museum/spectravideo-sv-318/) and [328](/museum/spectravideo-sv-328/), Spectravideo asked naturally Microsoft to develop a Basic. Then, when Microsoft developped the MSX Basic, they used their previous work with Spectravideo. That's why there's always been a rumour saying that the SV-318 and 328 were [MSX](/museum/msx-1/) compatible. But that's wrong, the first Spectravideo MSX is truly the SVI-728.
The SVI-728 is not really different from the other MSX 1, apart maybe from the keyboard which is very complete with its numeric keypad and also the fact that it was one of the first MSX to come with some serious extensions.
Spectravideo also made a portable version of the SVI-728: the Spectravideo [SVI-738](/museum/spectravideo-svi-738-x-press/).
---
More information from **Taneli Lukka** (Finland):\
SVI-728 does have a very complete keyboard, but it's also probably the worst mechanical keyboard in history. It can be best described as putting your hands in to a pile of jelly and trying to type something.
The build quality of this computer is also very poor when compared to Japanese MSX machines. The machine is mainly put together using hot glue. You can't even disconnect the keyboard from the mainboard because it has no connector, it's just soldered and glued in place!
Some of the machines are also not 100% MSX compliant because they don't run Konami's MegaROM/SCC-soundchip games like they are supposed to. Some machines don't run these games at all and all the others have sound problems because SVI used a wrong type of condensator next to the machines sound chip. Because of this the PSG sound chip is so loud that Konami's SCC chip can't be heard. Replacing the condensator cures the problem.
Another fact is that the machine actually has two cartridge ports, but the second port on the backside has a non-standard connector, so you can only connect SVI's own disk drive into it. The pin-outs are the same as in the regular port, though.
Different opinion from **Mark Dodd**:\
Mmmm, the Australian SVI-728's must have been different that the Finnish ones. At the User Group meeting in Australia we had up to 100 or more happy SVI-728 users running just about every piece of MSX1 software porduced on cartridge, tape or floppy. I can't recall a single MSX title that didn't run correctly.\
I agree the machine was harder to dismantle than than the Sony HitBit or Toshiba equivalents but hey, they had nowhere near the peripheral support and who wanted to pull apart thier machine anyway?\
And once again I would have to disagree about the keyboard. I still have my SVI-728 at home and its keyboard feel is equivalent to this Microsoft keyboard I am typing this with.
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