SVI-728 explained

Type:	Home computer
Release Date:	1984
Cpu:	Zilog Z80A @ 3.58 MHz
Memory:	64 KB (+16 KB video memory)
Os:	MSX BASIC MSX-DOS CP/M 2.2
Predecessor:	SV-328
Display:	256x192 pixel resolution, 15 colours
Related:	SVI-738
Sound:	AY-3-8910
Graphics:	TMS9118/TMS9129 (NTSC/PAL)
Family:	MSX
Memory Card:	-inch floppy disks, ROM cartridge, cassette tapes
Input:	Keyboard

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:

Microprocessor

Zilog Z80A with a clockspeed of 3.58 MHz.

Memory

32 KB

64 KB (expandable to 256 KB)

VRAM

16 KB

Video

Graphical processor

Texas Instruments TMS9118/TMS9129 (NTSC/PAL)

Graphical resolution

256 x 192 (32 x 24) pixels

text modes: 40 characters x 24 lines

colors: 15

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

Notes and References

Web site: SVI 728 . https://web.archive.org/web/20210803150524/https://www.old-computers.com/museum/computer.asp?c=229 . 2021-08-03 . 2022-03-18 . OLD-COMPUTERS.COM : The Museum.
Web site: Stewart . Terry . 2021 . Spectravideo 728 . 2022-03-18 . Terry Stewart (Tezza)'s Vintage Classic Computer Collection.
Web site: Ögren . Ögren . Edmundsson . Jonsson . SVI-728 - HwB . https://web.archive.org/web/20220703023222/https://www.hardwarebook.info/SVI-728 . 2022-07-03 . 2022-03-18 . The Hardware Book - HwB.