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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.
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NAME |
SV-328 |
|
MANUFACTURER |
Spectravideo |
|
TYPE |
Home Computer |
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ORIGIN |
U.S.A. |
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YEAR |
1983 June |
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BUILT IN LANGUAGE |
Microsoft Extended
BASIC |
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KEYBOARD |
Full stroke
keyboard with numeric keypad |
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CPU |
Zilog Z80 A |
|
SPEED |
3.6 MHz |
|
RAM |
64 kB (up to 256
kB) |
|
VRAM |
16 kB |
|
ROM |
32 kB |
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GRAPHICS |
TMS9918A
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) |
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TEXT MODES |
40 chars x 24 lines
(optional 80 x 24) |
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GRAPHIC MODES |
256 x 192 dots |
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COLORS |
16 |
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SOUND CHIP |
AY-3-8910 |
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SOUND |
Three channels, 8
octaves |
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I/O PORTS |
Audio/Video, Tape,
Joystick (2), Cartridge, Super Expander |
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BUILT IN MEDIA |
None |
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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 |
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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.
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