Spectravideo SV-328

A slightly modified SV-318.  A full stroke keyboard, and a numeric keypad, replacing the joystick.  64k RAM insted of 16k.
 Launched in june 1983, during Summer CES in Chicago.



NAME   SV-328
MANUFACTURER   Spectravideo
TYPE   Home Computer
YEAR   1983 June
BUILT IN LANGUAGE   Microsoft Extended BASIC
KEYBOARD   Full stroke keyboard with numeric keypad
CPU   Zilog Z80 A
SPEED   3.6 MHz
RAM   64 kB (up to 256 kB)
VRAM   16 kB
ROM   32 kB
SCREEN 0: Text mode 40x24 characters, two colors (background+foregrund).
Fonts are formed using a 6x8 pixel matrix.  Sprites are not available in this mode.
SCREEN 1: High resolution graphics mode: 256x192, 16 colors. Sprites are available.
Colour resolution is 8x1 pixels: that is, for every group of 8x1 pixels, only one foreground/background color pair may be displayed.
This is a standard TMS-9918A limitation.
Text is also supported in SCREEN1, allowing up to 43x24 characters (with two pixels chopped off the 43rd character).
SCREEN 2: Low resolution graphics mode: 64x48, 16 colors.  Sprites are available.
The screen is addressed and formed using full 256x192 resolution, with 4x4 block graphics (each 8x8 pixel matrix holds four low resolution pixels).  Sprites are displayed at high resolution (256x192).
Text is also supported in SCREEN2, allowing up to 11x6 characters (with two pixels chopped off the 11th character)
TEXT MODES   40 chars x 24 lines (optional 80 x 24)
GRAPHIC MODES   256 x 192 dots
SOUND   Three channels, 8 octaves
I/O PORTS   Audio/Video, Tape, Joystick (2), Cartridge, Super Expander
POWER SUPPLY   External power supply.  9V AC & 16V AC out
PERIPHERALS   SVI-903 Data Cassette Recorder, SV-601 Super Expander, SV-602 Single Slot Expander, SV-902 Floppy Disk drive (external), SV-901 Dot Matrix Printer, SV-805 RS-232 Interface, SV-105 Graphic Touch Tablet, SV-803 16K RAM Pack, SV-807 64K RAM Pack, SV-802 Centronics Interface, SV-701 Smart Modem, SV-801 Dual Disk Drive Controller, SV-806 80-Column Display adapter, SV-603 Coleco Game Adapter, SV-101 Quickshot Joystick
PRICE  $595

SV-328 peripheral map.

   SV-328 users guide.

      SV-328 with SV-903 cassette deck
         SV-328 rear view
        SV-328 side view

  Inside the SV-328

   SV-328 main board.  A board without the ROM piggypack found in the SV-318.  The rest of the board is identical to the
   SV-318, with the exeption of larger memory modules.


   Details from the SV-328 mainboard.  AY-3-8910 sundchip and D8255AC I/O controller to the left.  Z80 CPU to the right.

    Complete SV-328 system in original box.




All photos are (C) Roger Samdal