page_title: SV-328
section_title: Peripherals
hierarchical_section_title: SV-328 / Peripherals
caption_attribution_description: Spectravideo SVI-328 con SuperExpander
context_page_description: The SV-328 is an 8-bit home computer introduced by Spectravideo in June 1983. It was the business-targeted model of the Spectravideo range, sporting a rather crowded full-travel keyboard with numeric keypad. It had 80 KB RAM, a respectable amount for its time. Other than the keyboard and RAM, this machine was identical to its little brother, 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 SV-728, looks almost identical, the only immediately noticeable differences being a larger cartridge slot in the central position, lighter shaded keyboard and the MSX badging.
  Reference to the operating system Microsoft Extended BASIC is not to be confused with MSX BASIC, although some marketing at the time claimed that Microsoft Extended is what MSX stood for.
  /O==System specs==
  Processor: Zilog Z80A running at 3.6 MHz
  ROM: 32 KB
  BIOS
  BASIC
  RAM: 64 KB
  Video Display Processor: Texas Instruments TMS9918
  VRAM: 16 KB
  Text modes: 40×24 and 32×24
  Resolution: 256×192
  Sprites: 32, 1 colour, max 4 per horizontal line
  Sound chip: General Instrument AY-3-8910
  I/O chip: Intel 8255
context_section_description: At back of SV-318 / SV-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 for printer
  SV-806 80-column video card
  SV-801 Floppy controller card, needed for disk drive usage
  Hard disk controller card
  SV-809 Network card
  SV-602 Mini Expander (for one card)
  SV-601A Expander case with power supply and many slots. External disk drives
  SV-601B Super Expander, similar but with built-in floppy drive and an optional second drive
  SV-603 ColecoVision adapter, enabling ColecoVision games to be played on the SV-328
  SV-901C 80-columns printer at 50 cps (a refurbished Seikosha SK-100)
  SV-902 External floppy drive
  SV-903 cassette drive
  SV-105 Graphics Tablet
caption: SV-328 connected to a tape drive (left) and a SV-601B Super Expander.
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