SVI-728

SVI-728

Product family	MSX
Type	Home computer
Release date	1984
Operating system	MSX BASIC MSX-DOS CP/M 2.2
CPU	Zilog Z80A @ 3.58 MHz
Memory	64 KB (+16 KB video memory)
Removable storage	3+1⁄2-inch floppy disks, ROM cartridge, cassette tapes
Display	256x192 pixel resolution, 256 colours
Graphics	TMS9918A/TMS9929 (NTSC/PAL)
Sound	AY-3-8910
Input	Keyboard
Predecessor	SV-328
Related	SVI-738

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

The SVI-728 had the following technical specifications:[1]

Microprocessor

• Zilog Z80A with a clockspeed of 3.58 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

References

1. "SVI 728". OLD-COMPUTERS.COM : The Museum. Archived from the original on 2021-08-03. Retrieved 2022-03-18.
2. Stewart, Terry (2021). "Spectravideo 728". Terry Stewart (Tezza)'s Vintage Classic Computer Collection. Retrieved 2022-03-18.
3. Ögren; Ögren; Edmundsson; Jonsson. "SVI-728 - HwB". The Hardware Book - HwB. Archived from the original on 2022-07-03. Retrieved 2022-03-18.