SVI-728

Type	Home computer
Release date	1984
Operating system	MSX
CPU	Zilog Z80A @ 3.6 MHz
Memory	64 KB (+16 KB video memory)
Display	256 x 192 pixel resolution
Graphics	TMS9918A/TMS9929 (NTSC/PAL)
Sound	AY-3-8910
Predecessor	SV-328
Related	SVI-738, MSX

The SVI-728 is the first home computer from Spectravideo that complied fully with the MSX home computer specification.^[1][2] It was introduced in 1984.^[3] The design is virtually identical to that of the earlier SV-328, which did not comply fully with the MSX standard.

The SVI-738 is a portable version of this computer.

Technical specifications

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Microprocessor

• Zilog Z80A with a clockspeed of 3.56 MHz.

Memory

• ROM: 32 KB
• RAM: 64 KB (expandable to 256 KB)
• VRAM: 16 KB

Video

• Graphical processor: Texas Instruments TMS9918A/TMS9929 (NTSC/PAL)

• Graphical resolution: 256 x 192 pixels
• text modes: 40 characters x 24 lines and 32 characters x 24 lines
• colors: 16
• sprites: 32

Sound

• General Instrument AY-3-8910-soundchip

• 3 sound channels
• 1 noise channels
• 1 envelope controller

Connectors

• 1 data recorder/Cassette deck
• 2 joysticks
• 1 cartridge
• 1 Super Expander
• 1 disk station