SV-328

Infobox computer
Name = Spectravideo SVI-328

Photo =
Caption = Spectravideo SVI-328 and SV-601B SuperExpander
Type = Home computer
Developer = Spectravideo
Released = 1983 (Summer CES, Chicago)
Discontinued =
Processor = Zilog Z80A @ 3.6 MHz
Memory = 64 KB (+16 KB VRAM)
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OS = Microsoft Extended BASIC
CP/M
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The SV-328 was the business-targeted model of the Spectravideo range, sporting a rather crowded full-travel keyboard with numeric keypad, and no built-in joystick (though the arrow keys mimicked this function). It had 80 kB RAM (64 kB available for software, remaining 16 kB video memory), a respectable amount for its time. Other than the keyboard and RAM, this machine was identical to the SV-318.

The SV-328 is the design on which the MSX standard was based. Spectravideo's MSX-compliant successor to the 328, the SVI-728, looks almost identical, the only immediately noticeable differences being a larger cartridge slot (to fit MSX standard cartridges) and the MSX badging.

ystem specs

* Processor: Zilog Z80A running at 3.58 MHz
* ROM: 32 KB
** BIOS (16 KB)
** BASIC (16 KB)
* RAM: 64 KB
* Video Display Processor: Texas Instruments TMS9918
** VRAM: 16 KB
** Text modes: 40×24 and 32×24
** Resolution: 256×192 (16 colours)
** Sprites: 32, 1 colour, max 4 per horizontal line
* Sound chip: General Instrument AY-3-8910 (PSG)
* Programmable Peripheral Interface : Intel 8255

Peripherals

At back of SV-318 / SVI-328, adapters permit to connect only a few peripherals, such as a tape drive (SV-903), a CVBS monitor and joysticks. However, with a Super Expander unit, more options were available:

* SV-803 Memory Expansion Card, 16 kB
* SV-807 Memory Expansion Card, 64 kB
* SV-805 RS232 Card
* SV-701 Internal Modem 300 baud
* SV-802 Centronics Parallel Port Card
* SV-806 80-column video Card
* SV-801 Floppy Controller Card
* Hard Disk Controller Card
* SV-809 Network Card
* SV-602 MiniExpander (allow only connect a card) .
* SV-601A Expander case with power supply and many slots. External disk drives
* SV-601B SuperExpander, equal but with internal floppy / HD
* SV-603 ColecoVision adapter
* SV-901C 80-columns printer at 50 cps (a refurbished Seikosha SK-100)
* SV-902 External floppy. First SSDD, now DSDD
* SV-903 SVI Cassette
* SV-105 Graphics Tablet

External links

* [http://www.samdal.com/sv328.htm SV-328 at Roger's Spectravideo page]
* [http://www.museo8bits.com/svi328.htm El Museo de los 8 Bits]
* [http://www.old-computers.com/museum/computer.asp?c=228 old-computers]
* [http://www.network54.com/Forum/25917/ Spectravideo discussion board]

Emulators

* [http://www.acc.umu.se/~yarin/sviemu/ SVI-318/328 Emulator] by Jimmy Mårdell
* [http://www.msxblue.com MSX blue] MSX emulator, support SVI 318/328